Types change: big pass on libstddjb and libunixonacid

 libdatastruct still missing, library still not functional

256 files changed, 595 insertions, 699 deletions

diff --git a/src/libstddjb/allreadv.c b/src/libstddjb/allreadv.c
index 13514cc..da300fd 100644
--- a/src/libstddjb/allreadv.c
+++ b/src/libstddjb/allreadv.c
@@ -1,6 +1,5 @@
 /* ISC license. */
 
-#include <sys/types.h>
 #include <sys/uio.h>
 #include <skalibs/allreadwrite.h>
 
diff --git a/src/libstddjb/allreadwritev.c b/src/libstddjb/allreadwritev.c
index 5ba3837..689bbf6 100644
--- a/src/libstddjb/allreadwritev.c
+++ b/src/libstddjb/allreadwritev.c
@@ -1,6 +1,5 @@
 /* ISC license. */
 
-#include <sys/types.h>
 #include <sys/uio.h>
 #include <skalibs/functypes.h>
 #include <skalibs/allreadwrite.h>
diff --git a/src/libstddjb/allwritev.c b/src/libstddjb/allwritev.c
index dc343a4..35b5d65 100644
--- a/src/libstddjb/allwritev.c
+++ b/src/libstddjb/allwritev.c
@@ -1,6 +1,5 @@
 /* ISC license. */
 
-#include <sys/types.h>
 #include <sys/uio.h>
 #include <skalibs/allreadwrite.h>
 
diff --git a/src/libstddjb/bitarray_firstclear_skip.c b/src/libstddjb/bitarray_firstclear_skip.c
index ef49ee0..0fa2944 100644
--- a/src/libstddjb/bitarray_firstclear_skip.c
+++ b/src/libstddjb/bitarray_firstclear_skip.c
@@ -3,10 +3,10 @@
 #include <sys/types.h>
 #include <skalibs/bitarray.h>
 
-size_t bitarray_firstclear_skip (register unsigned char const *s, size_t max, size_t skip)
+size_t bitarray_firstclear_skip (unsigned char const *s, size_t max, size_t skip)
 {
-  register size_t i = bitarray_div8(skip) ;
-  register size_t j = i << 3 > max ? max : i << 3 ;
+  size_t i = bitarray_div8(skip) ;
+  size_t j = i << 3 > max ? max : i << 3 ;
   if (i && s[i-1] != 0xffU)
   {
     while ((skip < j) && bitarray_peek(s, skip)) skip++ ;
diff --git a/src/libstddjb/bitarray_firstset_skip.c b/src/libstddjb/bitarray_firstset_skip.c
index 3689375..0b11c3e 100644
--- a/src/libstddjb/bitarray_firstset_skip.c
+++ b/src/libstddjb/bitarray_firstset_skip.c
@@ -3,10 +3,10 @@
 #include <sys/types.h>
 #include <skalibs/bitarray.h>
 
-size_t bitarray_firstset_skip (register unsigned char const *s, size_t max, size_t skip)
+size_t bitarray_firstset_skip (unsigned char const *s, size_t max, size_t skip)
 {
-  register size_t i = bitarray_div8(skip) ;
-  register size_t j = i << 3 > max ? max : i << 3 ;
+  size_t i = bitarray_div8(skip) ;
+  size_t j = i << 3 > max ? max : i << 3 ;
   if (i && s[i-1])
   {
     while ((skip < j) && !bitarray_peek(s, skip)) skip++ ;
diff --git a/src/libstddjb/buffer_fill.c b/src/libstddjb/buffer_fill.c
index b3a1bf2..cbdef3e 100644
--- a/src/libstddjb/buffer_fill.c
+++ b/src/libstddjb/buffer_fill.c
@@ -1,6 +1,5 @@
 /* ISC license. */
 
-#include <sys/types.h>
 #include <sys/uio.h>
 #include <errno.h>
 #include <skalibs/buffer.h>
diff --git a/src/libstddjb/buffer_flush.c b/src/libstddjb/buffer_flush.c
index 3249a11..c40c31e 100644
--- a/src/libstddjb/buffer_flush.c
+++ b/src/libstddjb/buffer_flush.c
@@ -1,6 +1,5 @@
 /* ISC license. */
 
-#include <sys/types.h>
 #include <sys/uio.h>
 #include <skalibs/cbuffer.h>
 #include <skalibs/buffer.h>
diff --git a/src/libstddjb/buffer_flush1read.c b/src/libstddjb/buffer_flush1read.c
index 0384602..49c919f 100644
--- a/src/libstddjb/buffer_flush1read.c
+++ b/src/libstddjb/buffer_flush1read.c
@@ -1,6 +1,5 @@
 /* ISC license. */
 
-#include <sys/types.h>
 #include <sys/uio.h>
 #include <skalibs/allreadwrite.h>
 #include <skalibs/buffer.h>
diff --git a/src/libstddjb/buffer_getv.c b/src/libstddjb/buffer_getv.c
index 358de01..280a3b4 100644
--- a/src/libstddjb/buffer_getv.c
+++ b/src/libstddjb/buffer_getv.c
@@ -1,6 +1,5 @@
 /* ISC license. */
 
-#include <sys/types.h>
 #include <sys/uio.h>
 #include <skalibs/allreadwrite.h>
 #include <skalibs/buffer.h>
diff --git a/src/libstddjb/buffer_getvall.c b/src/libstddjb/buffer_getvall.c
index ba2dfae..3a90871 100644
--- a/src/libstddjb/buffer_getvall.c
+++ b/src/libstddjb/buffer_getvall.c
@@ -1,6 +1,5 @@
 /* ISC license. */
 
-#include <sys/types.h>
 #include <sys/uio.h>
 #include <errno.h>
 #include <skalibs/allreadwrite.h>
diff --git a/src/libstddjb/buffer_getvallnf.c b/src/libstddjb/buffer_getvallnf.c
index e0e2e5d..e0a2d0a 100644
--- a/src/libstddjb/buffer_getvallnf.c
+++ b/src/libstddjb/buffer_getvallnf.c
@@ -1,6 +1,5 @@
 /* ISC license. */
 
-#include <sys/types.h>
 #include <sys/uio.h>
 #include <errno.h>
 #include <skalibs/siovec.h>
diff --git a/src/libstddjb/buffer_putv.c b/src/libstddjb/buffer_putv.c
index bd902ae..f8fac59 100644
--- a/src/libstddjb/buffer_putv.c
+++ b/src/libstddjb/buffer_putv.c
@@ -1,6 +1,5 @@
 /* ISC license. */
 
-#include <sys/types.h>
 #include <sys/uio.h>
 #include <skalibs/buffer.h>
 
diff --git a/src/libstddjb/buffer_putvall.c b/src/libstddjb/buffer_putvall.c
index b04ac36..5635aed 100644
--- a/src/libstddjb/buffer_putvall.c
+++ b/src/libstddjb/buffer_putvall.c
@@ -1,6 +1,5 @@
 /* ISC license. */
 
-#include <sys/types.h>
 #include <sys/uio.h>
 #include <errno.h>
 #include <skalibs/siovec.h>
diff --git a/src/libstddjb/buffer_putvallnf.c b/src/libstddjb/buffer_putvallnf.c
index 6f87d13..3898a36 100644
--- a/src/libstddjb/buffer_putvallnf.c
+++ b/src/libstddjb/buffer_putvallnf.c
@@ -1,6 +1,5 @@
 /* ISC license. */
 
-#include <sys/types.h>
 #include <sys/uio.h>
 #include <errno.h>
 #include <skalibs/siovec.h>
diff --git a/src/libstddjb/buffer_putvflush.c b/src/libstddjb/buffer_putvflush.c
index 4bbb329..86c5b5c 100644
--- a/src/libstddjb/buffer_putvflush.c
+++ b/src/libstddjb/buffer_putvflush.c
@@ -1,6 +1,5 @@
 /* ISC license. */
 
-#include <sys/types.h>
 #include <sys/uio.h>
 #include <skalibs/buffer.h>
 
diff --git a/src/libstddjb/case_lowerb.c b/src/libstddjb/case_lowerb.c
index 1285b52..d2099fc 100644
--- a/src/libstddjb/case_lowerb.c
+++ b/src/libstddjb/case_lowerb.c
@@ -3,7 +3,7 @@
 #include <sys/types.h>
 #include <skalibs/bytestr.h>
 
-void case_lowerb (register char *s, size_t len)
+void case_lowerb (char *s, size_t len)
 {
   unsigned char const d = 'a' - 'A' ;
   while (len--)
diff --git a/src/libstddjb/case_lowers.c b/src/libstddjb/case_lowers.c
index 5999786..349eade 100644
--- a/src/libstddjb/case_lowers.c
+++ b/src/libstddjb/case_lowers.c
@@ -2,9 +2,9 @@
 
 #include <skalibs/bytestr.h>
 
-void case_lowers (register char *s)
+void case_lowers (char *s)
 {
-  register unsigned char const d = 'a' - 'A' ;
+  unsigned char const d = 'a' - 'A' ;
   while (*s)
   {
     if (('A' <= *s) && (*s <= 'Z')) *s += d ;
diff --git a/src/libstddjb/case_startb.c b/src/libstddjb/case_startb.c
index d69f461..42e12f2 100644
--- a/src/libstddjb/case_startb.c
+++ b/src/libstddjb/case_startb.c
@@ -1,11 +1,11 @@
 /* ISC license. */
 
-#include <sys/types.h>
 #include <string.h>
+#include <strings.h>
 #include <skalibs/bytestr.h>
 
-int case_startb (register char const *s, size_t slen, register char const *t)
+int case_startb (char const *s, size_t slen, char const *t)
 {
   size_t tlen = strlen(t) ;
-  return slen < tlen ? 0 : !case_diffb(s, tlen, t) ;
+  return slen < tlen ? 0 : !strncasecmp(s, t, tlen) ;
 }
diff --git a/src/libstddjb/case_str.c b/src/libstddjb/case_str.c
index a6cd9b4..9c79019 100644
--- a/src/libstddjb/case_str.c
+++ b/src/libstddjb/case_str.c
@@ -16,8 +16,8 @@ size_t case_str (char const *haystack, char const *needle)
 
 #else
 
-#include <sys/types.h>
 #include <string.h>
+#include <strings.h>
 #include <skalibs/bytestr.h>
 
 size_t case_str (char const *haystack, char const *needle)
@@ -26,7 +26,7 @@ size_t case_str (char const *haystack, char const *needle)
   char const *p = haystack ;
   if (!nlen) return 0 ;
   for (; *p ; p++)
-    if (!case_diffb(p, nlen, needle)) return p - haystack ;
+    if (!strncasecmp(p, needle, nlen)) return p - haystack ;
   return strlen(haystack) ;
 }
 
diff --git a/src/libstddjb/case_upperb.c b/src/libstddjb/case_upperb.c
index 78ece8f..e3fa47b 100644
--- a/src/libstddjb/case_upperb.c
+++ b/src/libstddjb/case_upperb.c
@@ -1,5 +1,6 @@
 /* ISC license. */
 
+#include <sys/types.h>
 #include <skalibs/bytestr.h>
 
 void case_upperb (char *s, size_t len)
diff --git a/src/libstddjb/case_uppers.c b/src/libstddjb/case_uppers.c
index cf2875a..da0837c 100644
--- a/src/libstddjb/case_uppers.c
+++ b/src/libstddjb/case_uppers.c
@@ -2,9 +2,9 @@
 
 #include <skalibs/bytestr.h>
 
-void case_uppers (register char *s)
+void case_uppers (char *s)
 {
-  register unsigned char const d = 'a' - 'A' ;
+  unsigned char const d = 'a' - 'A' ;
   while (*s)
   {
     if (('a' <= *s) && (*s <= 'z')) *s -= d ;
diff --git a/src/libstddjb/cbuffer_get.c b/src/libstddjb/cbuffer_get.c
index c490c26..315751a 100644
--- a/src/libstddjb/cbuffer_get.c
+++ b/src/libstddjb/cbuffer_get.c
@@ -1,6 +1,5 @@
 /* ISC license. */
 
-#include <sys/types.h>
 #include <sys/uio.h>
 #include <skalibs/siovec.h>
 #include <skalibs/cbuffer.h>
diff --git a/src/libstddjb/cbuffer_getv.c b/src/libstddjb/cbuffer_getv.c
index f27d054..afdf8f9 100644
--- a/src/libstddjb/cbuffer_getv.c
+++ b/src/libstddjb/cbuffer_getv.c
@@ -1,6 +1,5 @@
 /* ISC license. */
 
-#include <sys/types.h>
 #include <sys/uio.h>
 #include <skalibs/siovec.h>
 #include <skalibs/cbuffer.h>
diff --git a/src/libstddjb/cbuffer_put.c b/src/libstddjb/cbuffer_put.c
index 2a5fcf8..428a430 100644
--- a/src/libstddjb/cbuffer_put.c
+++ b/src/libstddjb/cbuffer_put.c
@@ -1,6 +1,5 @@
 /* ISC license. */
 
-#include <sys/types.h>
 #include <sys/uio.h>
 #include <skalibs/siovec.h>
 #include <skalibs/cbuffer.h>
diff --git a/src/libstddjb/cbuffer_putv.c b/src/libstddjb/cbuffer_putv.c
index 2fcdee6..62af494 100644
--- a/src/libstddjb/cbuffer_putv.c
+++ b/src/libstddjb/cbuffer_putv.c
@@ -1,6 +1,5 @@
 /* ISC license. */
 
-#include <sys/types.h>
 #include <sys/uio.h>
 #include <skalibs/siovec.h>
 #include <skalibs/cbuffer.h>
diff --git a/src/libstddjb/cbuffer_wpeek.c b/src/libstddjb/cbuffer_wpeek.c
index a1e502e..8b6b586 100644
--- a/src/libstddjb/cbuffer_wpeek.c
+++ b/src/libstddjb/cbuffer_wpeek.c
@@ -1,6 +1,5 @@
 /* ISC license. */
 
-#include <sys/types.h>
 #include <sys/uio.h>
 #include <skalibs/cbuffer.h>
 
diff --git a/src/libstddjb/cdb_findnext.c b/src/libstddjb/cdb_findnext.c
index 2559bc2..536013b 100644
--- a/src/libstddjb/cdb_findnext.c
+++ b/src/libstddjb/cdb_findnext.c
@@ -1,18 +1,19 @@
 /* ISC license. */
 
-#include <skalibs/bytestr.h>
+#include <stdint.h>
+#include <string.h>
 #include <skalibs/uint32.h>
 #include <skalibs/cdb.h>
 
-static int match (struct cdb *c, char const *key, unsigned int len, uint32 pos)
+static int match (struct cdb *c, char const *key, unsigned int len, uint32_t pos)
 {
   char buf[1024] ;
   while (len > 0)
   {
-    register unsigned int n = 1024 ;
+    unsigned int n = 1024 ;
     if (n > len) n = len ;
     if (cdb_read(c, buf, n, pos) < 0) return -1 ;
-    if (byte_diff(buf, n, key)) return 0 ;
+    if (memcmp(buf, key, n)) return 0 ;
     pos += n ; key += n ; len -= n ;
   }
   return 1 ;
@@ -21,8 +22,8 @@ static int match (struct cdb *c, char const *key, unsigned int len, uint32 pos)
 int cdb_findnext (struct cdb *c, char const *key, unsigned int len)
 {
   char buf[8] ;
-  uint32 pos ;
-  uint32 u ;
+  uint32_t pos ;
+  uint32_t u ;
 
   if (!c->loop)
   {
diff --git a/src/libstddjb/cdb_hash.c b/src/libstddjb/cdb_hash.c
index 9eedf54..85a11c1 100644
--- a/src/libstddjb/cdb_hash.c
+++ b/src/libstddjb/cdb_hash.c
@@ -1,17 +1,17 @@
 /* ISC license. */
 
-#include <skalibs/uint32.h>
+#include <stdint.h>
 #include <skalibs/cdb.h>
 
-uint32 cdb_hashadd (uint32 h, unsigned char c)
+uint32_t cdb_hashadd (uint32_t h, unsigned char c)
 {
   h += (h << 5) ;
   return h ^ c ;
 }
 
-uint32 cdb_hash (char const *buf, unsigned int len)
+uint32_t cdb_hash (char const *buf, unsigned int len)
 {
-  uint32 h = CDB_HASHSTART ;
+  uint32_t h = CDB_HASHSTART ;
   while (len--) h = cdb_hashadd(h, *buf++) ;
   return h ;
 }
diff --git a/src/libstddjb/cdb_init_map.c b/src/libstddjb/cdb_init_map.c
index bf8eb9d..de9aad0 100644
--- a/src/libstddjb/cdb_init_map.c
+++ b/src/libstddjb/cdb_init_map.c
@@ -1,8 +1,14 @@
 /* ISC license. */
 
+#ifndef _BSD_SOURCE
+#define _BSD_SOURCE
+#endif
+
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <sys/mman.h>
+#include <stdint.h>
+#include <errno.h>
 #include <skalibs/cdb.h>
 
 int cdb_init_map (struct cdb *c, int fd, int domap)
@@ -12,6 +18,7 @@ int cdb_init_map (struct cdb *c, int fd, int domap)
     struct stat st ;
     char *map ;
     if (fstat(fd, &st) < 0) return 0 ;
+    if (st.st_size > UINT32_MAX) return (errno = EOVERFLOW, 0) ;
     map = mmap(0, st.st_size, PROT_READ, MAP_SHARED, fd, 0) ;
     if (map == MAP_FAILED) return 0 ;
     c->fd = -fd-2 ;
diff --git a/src/libstddjb/cdb_make.c b/src/libstddjb/cdb_make.c
index c7e79d3..ce5e81e 100644
--- a/src/libstddjb/cdb_make.c
+++ b/src/libstddjb/cdb_make.c
@@ -1,6 +1,7 @@
 /* ISC license. */
 
 #include <unistd.h>
+#include <stdint.h>
 #include <errno.h>
 #include <skalibs/uint32.h>
 #include <skalibs/diuint32.h>
@@ -16,28 +17,29 @@ int cdb_make_start (struct cdb_make *c, int fd)
   c->hplist = genalloc_zero ;
   c->pos = 2048 ;
   buffer_init(&c->b, &fd_writev, fd, c->buf, BUFFER_OUTSIZE) ;
-  return (int)lseek(fd, c->pos, SEEK_SET) ;
+  if (lseek(fd, c->pos, SEEK_SET) < 0) return -1 ;
+  return 0 ;
 }
 
 static int posplus (struct cdb_make *c, uint32 len)
 {
-  register uint32 newpos = c->pos + len ;
+  uint32_t newpos = c->pos + len ;
   if (newpos < len) return (errno = ENOMEM, 0) ;
   c->pos = newpos ;
   return 1 ;
 }
 
-static inline int cdb_make_addend (struct cdb_make *c, unsigned int keylen, unsigned int datalen, uint32 h)
+static inline int cdb_make_addend (struct cdb_make *c, unsigned int keylen, unsigned int datalen, uint32_t h)
 {
   diuint32 blah = { .left = h, .right = c->pos } ;
   return genalloc_append(diuint32, &c->hplist, &blah) && posplus(c, 8) && posplus(c, keylen) && posplus(c, datalen) ;
 }
 
-static inline int cdb_make_addbegin (struct cdb_make *c, unsigned int keylen, unsigned int datalen)
+static inline ssize_t cdb_make_addbegin (struct cdb_make *c, unsigned int keylen, unsigned int datalen)
 {
   char buf[8] ;
-  uint32_pack(buf, (uint32)keylen) ;
-  uint32_pack(buf + 4, (uint32)datalen) ;
+  uint32_pack(buf, (uint32_t)keylen) ;
+  uint32_pack(buf + 4, (uint32_t)datalen) ;
   return buffer_put(&c->b, buf, 8) ;
 }
 
@@ -56,19 +58,19 @@ int cdb_make_add (struct cdb_make *c, char const *key, unsigned int keylen, char
 
 int cdb_make_finish (struct cdb_make *c)
 {
-  uint32 count[256] ;
-  uint32 start[256] ;
+  uint32_t count[256] ;
+  uint32_t start[256] ;
   char final[2048] ;
   unsigned int size = 1 ;
   unsigned int n = genalloc_len(diuint32, &c->hplist) ;
-  register unsigned int i = 0 ;
-  register diuint32 *hp = genalloc_s(diuint32, &c->hplist) ;
+  unsigned int i = 0 ;
+  diuint32 *hp = genalloc_s(diuint32, &c->hplist) ;
 
   for (; i < 256 ; i++) count[i] = 0 ;
   for (i = 0 ; i < n ; i++) ++count[hp[i].left & 255] ;
 
   {
-    register uint32 u = 0 ;
+    uint32_t u = 0 ;
     for (i = 0 ; i < 256 ; i++) start[i] = u += count[i] ; /* bounded by n */
     for (i = 0 ; i < 256 ; i++)
     {
@@ -89,10 +91,10 @@ int cdb_make_finish (struct cdb_make *c)
     for (i = 0 ; i < 256 ; ++i)
     {
       char buf[8] ;
-      register uint32 k = count[i] ;
-      register uint32 len = k << 1 ; /* no overflow possible */
-      register diuint32 *p = split + start[i] ;
-      register unsigned int j = 0 ;
+      uint32_t k = count[i] ;
+      uint32_t len = k << 1 ; /* no overflow possible */
+      diuint32 *p = split + start[i] ;
+      unsigned int j = 0 ;
 
       uint32_pack(final + (i << 3), c->pos) ;
       uint32_pack(final + (i << 3) + 4, len) ;
@@ -100,7 +102,7 @@ int cdb_make_finish (struct cdb_make *c)
       for (; j < len ; j++) hp[j].left = hp[j].right = 0 ;
       for (j = 0 ; j < k ; j++)
       {
-        register uint32 where = (p->left >> 8) % len ;
+        uint32_t where = (p->left >> 8) % len ;
         while (hp[where].right) if (++where == len) where = 0 ;
         hp[where] = *p++ ;
       }
diff --git a/src/libstddjb/cdb_mapfile.c b/src/libstddjb/cdb_mapfile.c
index f26ad3c..1ffae19 100644
--- a/src/libstddjb/cdb_mapfile.c
+++ b/src/libstddjb/cdb_mapfile.c
@@ -10,7 +10,7 @@ int cdb_mapfile (struct cdb *c, char const *file)
   if (fd < 0) return 0 ;
   if (!cdb_init_map(c, fd, 1))
   {
-    register int e = errno ;
+    int e = errno ;
     fd_close(fd) ;
     errno = e ;
     return 0 ;
diff --git a/src/libstddjb/cdb_nextkey.c b/src/libstddjb/cdb_nextkey.c
index 28925fe..51e927f 100644
--- a/src/libstddjb/cdb_nextkey.c
+++ b/src/libstddjb/cdb_nextkey.c
@@ -1,12 +1,13 @@
 /* ISC license. */
 
+#include <stdint.h>
 #include <skalibs/uint32.h>
 #include <skalibs/cdb.h>
 
-int cdb_nextkey (struct cdb *c, uint32 *kpos)
+int cdb_nextkey (struct cdb *c, uint32_t *kpos)
 {
   char buf[8] ;
-  uint32 eod, klen ;
+  uint32_t eod, klen ;
   if (cdb_read(c, buf, 4, 0) < 0) return -1 ;
   uint32_unpack(buf, &eod) ;
   if (eod < 8 || eod - 8 < *kpos) return 0 ;
diff --git a/src/libstddjb/cdb_read.c b/src/libstddjb/cdb_read.c
index 76fbd63..e857511 100644
--- a/src/libstddjb/cdb_read.c
+++ b/src/libstddjb/cdb_read.c
@@ -1,23 +1,24 @@
 /* ISC license. */
 
+#include <unistd.h>
+#include <stdint.h>
+#include <string.h>
 #include <errno.h>
 #include <skalibs/error.h>
-#include <skalibs/bytestr.h>
 #include <skalibs/allreadwrite.h>
 #include <skalibs/uint32.h>
-#include <skalibs/djbunix.h>
 #include <skalibs/cdb.h>
 
-int cdb_read (struct cdb *c, char *buf, unsigned int len, uint32 pos)
+int cdb_read (struct cdb *c, char *buf, unsigned int len, uint32_t pos)
 {
   if (c->map)
   {
     if ((pos > c->size) || (c->size - pos < len)) return (errno = EPROTO, -1) ;
-    byte_copy(buf, len, c->map + pos) ;
+    memcpy(buf, c->map + pos, len) ;
   }
   else
   {
-    if (seek_set(c->fd, pos) < 0) return -1 ;
+    if (lseek(c->fd, pos, SEEK_SET) < 0) return -1 ;
     if (allread(c->fd, buf, len) < len) return -1 ;
   }
   return 0 ;
diff --git a/src/libstddjb/cdb_successor.c b/src/libstddjb/cdb_successor.c
index 5660692..0d7e17f 100644
--- a/src/libstddjb/cdb_successor.c
+++ b/src/libstddjb/cdb_successor.c
@@ -1,14 +1,15 @@
 /* ISC license. */
 
+#include <stdint.h>
 #include <skalibs/uint32.h>
 #include <skalibs/cdb.h>
 
 int cdb_successor (struct cdb *c, char const *key, unsigned int klen)
 {
-  uint32 kpos ;
+  uint32_t kpos ;
   if (key)
   {
-    register int r = cdb_find(c, key, klen) ;
+    int r = cdb_find(c, key, klen) ;
     if (r < 1) return r ;
     kpos = c->dpos + c->dlen ;
   }
diff --git a/src/libstddjb/dir_close.c b/src/libstddjb/dir_close.c
index 0af6f0e..1b7b16a 100644
--- a/src/libstddjb/dir_close.c
+++ b/src/libstddjb/dir_close.c
@@ -5,7 +5,7 @@
 
 int dir_close (DIR *dir)
 {
-  register unsigned int done = 0 ;
+  unsigned int done = 0 ;
 doit:
   done++ ;
   if (!closedir(dir)) return 0 ;
diff --git a/src/libstddjb/djbtime-internal.h b/src/libstddjb/djbtime-internal.h
index eb4e676..a80b540 100644
--- a/src/libstddjb/djbtime-internal.h
+++ b/src/libstddjb/djbtime-internal.h
@@ -6,10 +6,10 @@
 #include <skalibs/uint64.h>
 
 extern unsigned int const leapsecs_table_len ;
-extern uint64 const *const leapsecs_table ;
+extern uint64_t const *const leapsecs_table ;
 
-extern void leapsecs_add (uint64 *, int) ;
-extern int leapsecs_sub (uint64 *) ;
+extern void leapsecs_add (uint64_t *, int) ;
+extern int leapsecs_sub (uint64_t *) ;
 extern int skalibs_tzisright (void) ;
 
 #endif
diff --git a/src/libstddjb/env_addmodif.c b/src/libstddjb/env_addmodif.c
index 4c34479..ddd1be3 100644
--- a/src/libstddjb/env_addmodif.c
+++ b/src/libstddjb/env_addmodif.c
@@ -1,11 +1,12 @@
 /* ISC license. */
 
+#include <sys/types.h>
 #include <skalibs/stralloc.h>
 #include <skalibs/env.h>
 
 int env_addmodif (stralloc *sa, char const *s, char const *t)
 {
-  unsigned int oldlen = sa->len ;
+  size_t oldlen = sa->len ;
   if (!s) return 1 ;
   if (!stralloc_cats(sa, s)) return 0 ;
   if ((t && (!stralloc_catb(sa, "=", 1) || !stralloc_cats(sa, t)))
diff --git a/src/libstddjb/env_get2.c b/src/libstddjb/env_get2.c
index 612cf6a..5909ea6 100644
--- a/src/libstddjb/env_get2.c
+++ b/src/libstddjb/env_get2.c
@@ -1,15 +1,14 @@
 /* ISC license. */
 
+#include <string.h>
 #include <skalibs/bytestr.h>
 #include <skalibs/env.h>
 
 char const *env_get2 (char const *const *envp, char const *s)
 {
-  unsigned int i ;
-  unsigned int len ;
-
+  size_t len, i ;
   if (!s) return 0 ;
-  len = str_len(s) ;
+  len = strlen(s) ;
   for (i = 0 ; envp[i] ; ++i)
     if (str_start(envp[i], s)
      && (envp[i][len] == '='))
diff --git a/src/libstddjb/env_len.c b/src/libstddjb/env_len.c
index 7e0bea8..f551ce1 100644
--- a/src/libstddjb/env_len.c
+++ b/src/libstddjb/env_len.c
@@ -1,10 +1,11 @@
 /* ISC license. */
 
+#include <sys/types.h>
 #include <skalibs/env.h>
 
-unsigned int env_len (register char const *const *e)
+size_t env_len (char const *const *e)
 {
-  register unsigned int i = 0 ;
+  size_t i = 0 ;
   while (*e++) i++ ;
   return i ;
 }
diff --git a/src/libstddjb/env_make.c b/src/libstddjb/env_make.c
index dd5139f..60148f8 100644
--- a/src/libstddjb/env_make.c
+++ b/src/libstddjb/env_make.c
@@ -1,14 +1,14 @@
 /* ISC license. */
 
+#include <string.h>
 #include <errno.h>
-#include <skalibs/bytestr.h>
 #include <skalibs/env.h>
 
-int env_make (char const **v, unsigned int argc, char const *s, unsigned int len)
+int env_make (char const **v, size_t argc, char const *s, size_t len)
 {
   while (argc--)
   {
-    register unsigned int n = str_len(s) + 1 ;
+    size_t n = strlen(s) + 1 ;
     if (n > len) return (errno = EINVAL, 0) ;
     *v++ = s ; s += n ; len -= n ;
   }
diff --git a/src/libstddjb/env_merge.c b/src/libstddjb/env_merge.c
index 2a0e5bd..f7ba335 100644
--- a/src/libstddjb/env_merge.c
+++ b/src/libstddjb/env_merge.c
@@ -1,22 +1,23 @@
 /* ISC license. */
 
+#include <string.h>
 #include <errno.h>
 #include <skalibs/bytestr.h>
 #include <skalibs/env.h>
 
-unsigned int env_merge (char const **v, unsigned int vmax, char const *const *envp, unsigned int envlen, char const *modifs, unsigned int modiflen)
+size_t env_merge (char const **v, size_t vmax, char const *const *envp, size_t envlen, char const *modifs, size_t modiflen)
 {
-  unsigned int n = byte_count(modifs, modiflen, '\0') ;
-  unsigned int vlen = envlen ;
-  register unsigned int i = 0 ;
+  size_t n = byte_count(modifs, modiflen, '\0') ;
+  size_t vlen = envlen ;
+  size_t i = 0 ;
   if (envlen + n + 1 > vmax) return (errno = ENAMETOOLONG, 0) ;
   for (; i < envlen ; i++) v[i] = envp[i] ;
-  for (i = 0 ; i < modiflen ; i += str_len(modifs + i) + 1)
+  for (i = 0 ; i < modiflen ; i += strlen(modifs + i) + 1)
   {
-    unsigned int split = str_chr(modifs + i, '=') ;
-    register unsigned int j = 0 ;
+    size_t split = str_chr(modifs + i, '=') ;
+    size_t j = 0 ;
     for (; j < vlen ; j++)
-      if (!byte_diff(modifs + i, split, v[j]) && (v[j][split] == '=')) break ;
+      if (!memcmp(modifs + i, v[j], split) && (v[j][split] == '=')) break ;
     if (j < vlen) v[j] = v[--vlen] ;
     if (modifs[i + split]) v[vlen++] = modifs + i ;
   }
diff --git a/src/libstddjb/env_string.c b/src/libstddjb/env_string.c
index 7f97859..d76e783 100644
--- a/src/libstddjb/env_string.c
+++ b/src/libstddjb/env_string.c
@@ -1,12 +1,13 @@
 /* ISC license. */
 
+#include <sys/types.h>
 #include <skalibs/stralloc.h>
 #include <skalibs/env.h>
 
-int env_string (stralloc *sa, char const *const *envp, unsigned int envlen)
+int env_string (stralloc *sa, char const *const *envp, size_t envlen)
 {
-  unsigned int salen = sa->len ;
-  register unsigned int i = 0 ;
+  size_t salen = sa->len ;
+  size_t i = 0 ;
   for (; i < envlen ; i++)
   {
     if (!stralloc_cats(sa, envp[i]) || !stralloc_0(sa))
diff --git a/src/libstddjb/envalloc_make.c b/src/libstddjb/envalloc_make.c
index 1cc44b9..2c2e553 100644
--- a/src/libstddjb/envalloc_make.c
+++ b/src/libstddjb/envalloc_make.c
@@ -1,10 +1,11 @@
 /* ISC license. */
 
+#include <sys/types.h>
 #include <skalibs/env.h>
 #include <skalibs/genalloc.h>
 #include <skalibs/envalloc.h>
 
-int envalloc_make (genalloc *v, unsigned int argc, char const *s, unsigned int len)
+int envalloc_make (genalloc *v, size_t argc, char const *s, size_t len)
 {
   int wasnull = !v->s ;
   if (!genalloc_readyplus(char const *, v, argc+1)) return 0 ;
diff --git a/src/libstddjb/envalloc_merge.c b/src/libstddjb/envalloc_merge.c
index 9134b84..84179f0 100644
--- a/src/libstddjb/envalloc_merge.c
+++ b/src/libstddjb/envalloc_merge.c
@@ -1,13 +1,14 @@
 /* ISC license. */
 
+#include <sys/types.h>
 #include <skalibs/bytestr.h>
 #include <skalibs/env.h>
 #include <skalibs/genalloc.h>
 #include <skalibs/envalloc.h>
 
-int envalloc_merge (genalloc *v, char const *const *envp, unsigned int envlen, char const *modifs, unsigned int modiflen)
+int envalloc_merge (genalloc *v, char const *const *envp, size_t envlen, char const *modifs, size_t modiflen)
 {
-  unsigned int n = envlen + 1 + byte_count(modifs, modiflen, '\0') ;
+  size_t n = envlen + 1 + byte_count(modifs, modiflen, '\0') ;
   if (!genalloc_readyplus(char const *, v, n)) return 0 ;
   n = env_merge(genalloc_s(char const *, v) + genalloc_len(char const *, v), n, envp, envlen, modifs, modiflen) ;
   genalloc_setlen(char const *, v, genalloc_len(char const *, v) + n) ;
diff --git a/src/libstddjb/envalloc_uniq.c b/src/libstddjb/envalloc_uniq.c
index 181128a..cf60b44 100644
--- a/src/libstddjb/envalloc_uniq.c
+++ b/src/libstddjb/envalloc_uniq.c
@@ -1,5 +1,6 @@
 /* ISC license. */
 
+#include <string.h>
 #include <errno.h>
 #include <skalibs/bytestr.h>
 #include <skalibs/genalloc.h>
@@ -8,24 +9,24 @@
 int envalloc_uniq (genalloc *v, char delim)
 {
   unsigned int m = 0 ;
-  register unsigned int i = 0 ;
+  size_t i = 0 ;
   for (; i < genalloc_len(char const *, v) ; i++)
   {
-    register unsigned int j = i+1 ;
+    size_t j = i+1 ;
     char const *s = genalloc_s(char const *, v)[i] ;
-    unsigned int n = str_chr(s, delim) ;
+    size_t n = str_chr(s, delim) ;
     if (delim && !s[n]) return (errno = EINVAL, -1) ;
     for (; j < genalloc_len(char const *, v) ; j++)
     {
-      register char const **p = genalloc_s(char const *, v) ;
-      if (!str_diffn(s, p[j], n))
+      char const **p = genalloc_s(char const *, v) ;
+      if (!strncmp(s, p[j], n))
       {
-        register unsigned int len = genalloc_len(char const *, v) - 1 ;
+        size_t len = genalloc_len(char const *, v) - 1 ;
         genalloc_setlen(char const *, v, len) ;
         p[j] = p[len] ;
         m++ ;
       }
     }
   }
-  return (int)m ;
+  return m ;
 }
diff --git a/src/libstddjb/error_temp.c b/src/libstddjb/error_temp.c
index 48a54f5..ce7576a 100644
--- a/src/libstddjb/error_temp.c
+++ b/src/libstddjb/error_temp.c
@@ -3,7 +3,7 @@
 #include <errno.h>
 #include <skalibs/error.h>
 
-int error_temp (register int e)
+int error_temp (int e)
 {
   if (error_isagain(e)) return 1 ;
   switch (e)
diff --git a/src/libstddjb/fd_cat.c b/src/libstddjb/fd_cat.c
index 1853427..fdaf093 100644
--- a/src/libstddjb/fd_cat.c
+++ b/src/libstddjb/fd_cat.c
@@ -11,7 +11,7 @@ int fd_cat (int from, int to)
   if (!iobuffer_init(&b, from, to)) return -1 ;
   for (;;)
   {
-    register ssize_t r = iobuffer_fill(&b) ;
+    ssize_t r = iobuffer_fill(&b) ;
     if (r < 0) goto err ;
     else if (!r) break ;
     if (!iobuffer_flush(&b)) goto err ;
diff --git a/src/libstddjb/fd_catn.c b/src/libstddjb/fd_catn.c
index b757853..c2ddd7a 100644
--- a/src/libstddjb/fd_catn.c
+++ b/src/libstddjb/fd_catn.c
@@ -15,7 +15,7 @@ size_t fd_catn (int from, int to, size_t n)
     if (!iobuffer_init(&b, from, to)) return 0 ;
     while (n >= IOBUFFER_SIZE)
     {
-      register ssize_t r = iobuffer_fill(&b) ;
+      ssize_t r = iobuffer_fill(&b) ;
       if (r <= 0)
       {
         iobuffer_finish(&b) ;
diff --git a/src/libstddjb/fd_chdir.c b/src/libstddjb/fd_chdir.c
index e09656e..f506ccc 100644
--- a/src/libstddjb/fd_chdir.c
+++ b/src/libstddjb/fd_chdir.c
@@ -6,7 +6,7 @@
 
 int fd_chdir (int d)
 {
-  register int r ;
+  int r ;
   do
     r = fchdir(d) ;
   while ((r == -1) && (errno == EINTR)) ;
diff --git a/src/libstddjb/fd_chmod.c b/src/libstddjb/fd_chmod.c
index a70c537..109826e 100644
--- a/src/libstddjb/fd_chmod.c
+++ b/src/libstddjb/fd_chmod.c
@@ -9,7 +9,7 @@
 
 int fd_chmod (int fd, unsigned int mode)
 {
-  register int r ;
+  int r ;
   do
     r = fchmod(fd, (mode_t)mode) ;
   while ((r == -1) && (errno == EINTR)) ;
diff --git a/src/libstddjb/fd_chown.c b/src/libstddjb/fd_chown.c
index f4915ae..8b0028f 100644
--- a/src/libstddjb/fd_chown.c
+++ b/src/libstddjb/fd_chown.c
@@ -7,7 +7,7 @@
 
 int fd_chown (int fd, uid_t uid, gid_t gid)
 {
-  register int r ;
+  int r ;
   do
     r = fchown(fd, uid, gid) ;
   while ((r == -1) && (errno == EINTR)) ;
diff --git a/src/libstddjb/fd_copy.c b/src/libstddjb/fd_copy.c
index b051eaf..80b887e 100644
--- a/src/libstddjb/fd_copy.c
+++ b/src/libstddjb/fd_copy.c
@@ -6,7 +6,7 @@
 
 int fd_copy (int to, int from)
 {
-  register int r ;
+  int r ;
   if (to == from) return (errno = EINVAL, -1) ;
   do
     r = dup2(from, to) ;
diff --git a/src/libstddjb/fd_ensure_open.c b/src/libstddjb/fd_ensure_open.c
index b399af2..40548c1 100644
--- a/src/libstddjb/fd_ensure_open.c
+++ b/src/libstddjb/fd_ensure_open.c
@@ -15,7 +15,7 @@ int fd_ensure_open (int fd, int w)
     if (newfd < 0) return 0 ;
     if (fd_move(fd, newfd) < 0)
     {
-      register int e = errno ;
+      int e = errno ;
       fd_close(newfd) ;
       errno = e ;
       return 0 ;
diff --git a/src/libstddjb/fd_move.c b/src/libstddjb/fd_move.c
index d79f8ac..d84db80 100644
--- a/src/libstddjb/fd_move.c
+++ b/src/libstddjb/fd_move.c
@@ -6,7 +6,7 @@
 
 int fd_move (int to, int from)
 {
-  register int r ;
+  int r ;
   if (to == from) return 0 ;
   do
     r = dup2(from, to) ;
diff --git a/src/libstddjb/fd_move2.c b/src/libstddjb/fd_move2.c
index 7894e2f..e28c2cc 100644
--- a/src/libstddjb/fd_move2.c
+++ b/src/libstddjb/fd_move2.c
@@ -6,7 +6,7 @@
 
 int fd_move2 (int to1, int from1, int to2, int from2)
 {
-  register int tmp = from2 ;
+  int tmp = from2 ;
   if (to1 == from1) return fd_move(to2, from2) ;
   if (to2 == from2) return fd_move(to1, from1) ;
   if (from1 == from2) return (to1 == to2) ? fd_move(to1, from1) : (errno = EINVAL, -1) ;
@@ -18,14 +18,14 @@ int fd_move2 (int to1, int from1, int to2, int from2)
   }
   if (fd_copy(to1, from1) == -1)
   {
-    register int e = errno ;
+    int e = errno ;
     if (from2 != tmp) fd_close(tmp) ;
     errno = e ;
     return -1 ;
   }
   if (fd_copy(to2, tmp) == -1)
   {
-    register int e = errno ;
+    int e = errno ;
     fd_close(to1) ;
     if (from2 != tmp) fd_move(from2, tmp) ;
     errno = e ;
diff --git a/src/libstddjb/fd_readv.c b/src/libstddjb/fd_readv.c
index 11dda66..0d384a4 100644
--- a/src/libstddjb/fd_readv.c
+++ b/src/libstddjb/fd_readv.c
@@ -1,6 +1,5 @@
 /* ISC license. */
 
-#include <sys/types.h>
 #include <sys/uio.h>
 #include <errno.h>
 #include <skalibs/allreadwrite.h>
diff --git a/src/libstddjb/fd_recv.c b/src/libstddjb/fd_recv.c
index 4eb8659..781daa5 100644
--- a/src/libstddjb/fd_recv.c
+++ b/src/libstddjb/fd_recv.c
@@ -7,8 +7,8 @@
 
 ssize_t fd_recv (int fd, char *buf, size_t len, unsigned int flags)
 {
-  register ssize_t r ;
-  do r = recv(fd, buf, len, (int)flags) ;
+  ssize_t r ;
+  do r = recv(fd, buf, len, flags) ;
   while ((r == -1) && (errno == EINTR)) ;
   return r ;
 }
diff --git a/src/libstddjb/fd_send.c b/src/libstddjb/fd_send.c
index 1d37bd5..b7ed939 100644
--- a/src/libstddjb/fd_send.c
+++ b/src/libstddjb/fd_send.c
@@ -7,8 +7,8 @@
 
 ssize_t fd_send (int fd, char const *buf, size_t len, unsigned int flags)
 {
-  register ssize_t r ;
-  do r = send(fd, buf, len, (int)flags) ;
+  ssize_t r ;
+  do r = send(fd, buf, len, flags) ;
   while ((r == -1) && (errno == EINTR)) ;
   return r ;
 }
diff --git a/src/libstddjb/fd_sync.c b/src/libstddjb/fd_sync.c
index db54136..e978151 100644
--- a/src/libstddjb/fd_sync.c
+++ b/src/libstddjb/fd_sync.c
@@ -6,7 +6,7 @@
 
 int fd_sync (int fd)
 {
-  register int r ;
+  int r ;
   do
     r = fsync(fd) ;
   while ((r == -1) && (errno == EINTR)) ;
diff --git a/src/libstddjb/fd_writev.c b/src/libstddjb/fd_writev.c
index c54a20e..61f7132 100644
--- a/src/libstddjb/fd_writev.c
+++ b/src/libstddjb/fd_writev.c
@@ -1,13 +1,12 @@
 /* ISC license. */
 
-#include <sys/types.h>
 #include <sys/uio.h>
 #include <errno.h>
 #include <skalibs/allreadwrite.h>
 
 ssize_t fd_writev (int fd, struct iovec const *v, unsigned int vlen)
 {
-  register ssize_t r ;
+  ssize_t r ;
   do r = writev(fd, v, vlen) ;
   while ((r == -1) && (errno == EINTR)) ;
   return r ;
diff --git a/src/libstddjb/fmtscan-internal.h b/src/libstddjb/fmtscan-internal.h
index 3c9f214..24e5774 100644
--- a/src/libstddjb/fmtscan-internal.h
+++ b/src/libstddjb/fmtscan-internal.h
@@ -5,9 +5,9 @@
 
 #include <sys/types.h>
 #include <stdint.h>
+#include <string.h>
 #include <errno.h>
 #include <limits.h>
-#include <skalibs/bytestr.h>
 #include <skalibs/fmtscan.h>
 
 #define SCANB(bits) \
@@ -18,7 +18,7 @@ size_t uint##bits##_scan_base (char const *s, uint##bits##_t *u, unsigned int ba
   size_t pos = 0 ; \
   for (;; pos++) \
   { \
-    register unsigned char c = fmtscan_num(s[pos], base) ; \
+    unsigned char c = fmtscan_num(s[pos], base) ; \
     if ((c >= base) || (result > ((max - c) / base))) break ; \
     result = result * base + c ; \
   } \
@@ -29,7 +29,7 @@ size_t uint##bits##_scan_base (char const *s, uint##bits##_t *u, unsigned int ba
 #define SCANB0(bits) \
 size_t uint##bits##0_scan_base (char const *s, uint##bits##_t *u, unsigned int base) \
 { \
-  register size_t pos = uint##bits##_scan_base(s, u, base) ; \
+  size_t pos = uint##bits##_scan_base(s, u, base) ; \
   if (!pos) return (errno = EINVAL, 0) ; \
   if (!s[pos]) return pos ; \
   errno = (fmtscan_num(s[pos], base) < base) ? EDOM : EINVAL ; \
@@ -40,8 +40,8 @@ size_t uint##bits##0_scan_base (char const *s, uint##bits##_t *u, unsigned int b
 size_t int##bits##_scan (char const *s, int##bits##_t *n) \
 { \
   uint##bits##_t tmp ; \
-  register size_t r = 0 ; \
-  register unsigned int sign = 0 ; \
+  size_t r = 0 ; \
+  unsigned int sign = 0 ; \
   if (*s == '-') \
   { \
     r = 1 + uint##bits##_scan(s+1, &tmp) ; \
@@ -74,7 +74,7 @@ size_t int##bits##_scan (char const *s, int##bits##_t *n) \
 #define SCANS0(bits) \
 size_t int##bits##0_scan (char const *s, int##bits##_t *u) \
 { \
-  register size_t pos = int##bits##_scan(s, u) ; \
+  size_t pos = int##bits##_scan(s, u) ; \
   if (!pos) return (errno = EINVAL, 0) ; \
   if (!s[pos]) return pos ; \
   errno = (fmtscan_num(s[pos], 10) < 10) ? EDOM : EINVAL ; \
@@ -87,10 +87,10 @@ size_t uint##bits##_scanlist (uint##bits##_t *tab, size_t max, char const *s, si
   size_t i = 0, len = 0 ; \
   for (; s[len] && (i < max) ; i++) \
   { \
-    register size_t w = uint##bits##_scan(s + len, tab + i) ; \
+    size_t w = uint##bits##_scan(s + len, tab + i) ; \
     if (!w) break ; \
     len += w ; \
-    while (byte_chr(",:; \t\r\n", 7, s[len]) < 7) len++ ; \
+    while (memchr(",:; \t\r\n", s[len], 7)) len++ ; \
   } \
   *num = i ; \
   return len ; \
@@ -102,10 +102,10 @@ size_t int##bits##_scanlist (int##bits##_t *tab, size_t max, char const *s, size
   size_t i = 0, len = 0 ; \
   for (; s[len] && (i < max) ; i++) \
   { \
-    register size_t w = int##bits##_scan(s + len, tab + i) ; \
+    size_t w = int##bits##_scan(s + len, tab + i) ; \
     if (!w) break ; \
     len += w ; \
-    while (byte_chr(",:; \t\r\n", 7, s[len]) < 7) len++ ; \
+    while (memchr(",:; \t\r\n", s[len], 7)) len++ ; \
   } \
   *num = i ; \
   return len ; \
@@ -117,7 +117,7 @@ size_t uint##bits##_fmtlist (char *s, uint##bits##_t const *tab, size_t n) \
   size_t i = 0, len = 0 ; \
   for (; i < n ; i++) \
   { \
-    register size_t w = uint##bits##_fmt(s, tab[i]) ; \
+    size_t w = uint##bits##_fmt(s, tab[i]) ; \
     len += w ; \
     if (s) \
     { \
@@ -131,9 +131,9 @@ size_t uint##bits##_fmtlist (char *s, uint##bits##_t const *tab, size_t n) \
 #define FMTB(bits) \
 size_t uint##bits##_fmt_base (char *s, uint##bits##_t x, unsigned int base) \
 { \
-  register size_t len = 1 ; \
+  size_t len = 1 ; \
   { \
-    register uint##bits##_t q = x ; \
+    uint##bits##_t q = x ; \
     while (q >= base) { len++ ; q /= base ; } \
   } \
   if (s) \
@@ -145,9 +145,9 @@ size_t uint##bits##_fmt_base (char *s, uint##bits##_t x, unsigned int base) \
 } \
 
 #define FMTB0(bits) \
-size_t uint##bits##0_fmt_base (char *s, uint##bits##_t x, register size_t n, unsigned int base) \
+size_t uint##bits##0_fmt_base (char *s, uint##bits##_t x, size_t n, unsigned int base) \
 { \
-  register size_t len = uint##bits##_fmt_base(0, x, base) ; \
+  size_t len = uint##bits##_fmt_base(0, x, base) ; \
   while (n-- > len) *s++ = '0' ; \
   return uint##bits##_fmt_base(s, x, base) ; \
 } \
@@ -166,7 +166,7 @@ size_t int##bits##_fmtlist (char *s, int##bits##_t const *tab, size_t n) \
   size_t i = 0, len = 0 ; \
   for (; i < n ; i++) \
   { \
-    register size_t w = int##bits##_fmt(s, tab[i]) ; \
+    size_t w = int##bits##_fmt(s, tab[i]) ; \
     len += w ; \
     if (s) \
     { \
diff --git a/src/libstddjb/fmtscan_num.c b/src/libstddjb/fmtscan_num.c
index 094eb2a..d9fea33 100644
--- a/src/libstddjb/fmtscan_num.c
+++ b/src/libstddjb/fmtscan_num.c
@@ -2,7 +2,7 @@
 
 #include <skalibs/fmtscan.h>
 
-unsigned char fmtscan_num (register unsigned char c, unsigned char n)
+unsigned char fmtscan_num (unsigned char c, unsigned char n)
 {
   return
     ((c < '0') || (n > 36)) ? n :
diff --git a/src/libstddjb/genalloc_deepfree.c b/src/libstddjb/genalloc_deepfree.c
index 29f1527..1684374 100644
--- a/src/libstddjb/genalloc_deepfree.c
+++ b/src/libstddjb/genalloc_deepfree.c
@@ -7,7 +7,7 @@
 void genalloc_deepfree_size (genalloc *g, freefunc_t_ref f, size_t size)
 {
   size_t len = g->len / size ;
-  register size_t i = 0 ;
+  size_t i = 0 ;
   for (; i < len ; i++) (*f)(g->s + i * size) ;
   stralloc_free(g) ;
 }
diff --git a/src/libstddjb/genwrite_flush_bufalloc.c b/src/libstddjb/genwrite_flush_bufalloc.c
index 6383246..44832c7 100644
--- a/src/libstddjb/genwrite_flush_bufalloc.c
+++ b/src/libstddjb/genwrite_flush_bufalloc.c
@@ -5,6 +5,5 @@
 
 int genwrite_flush_bufalloc (void *target)
 {
-  register bufalloc *ba = target ;
-  return bufalloc_flush(ba) ;
+  return bufalloc_flush((bufalloc *)target) ;
 }
diff --git a/src/libstddjb/genwrite_flush_buffer.c b/src/libstddjb/genwrite_flush_buffer.c
index d30f3e6..092ffb4 100644
--- a/src/libstddjb/genwrite_flush_buffer.c
+++ b/src/libstddjb/genwrite_flush_buffer.c
@@ -5,6 +5,5 @@
 
 int genwrite_flush_buffer (void *target)
 {
-  register buffer *b = target ;
-  return buffer_flush(b) ;
+  return buffer_flush((buffer *)target) ;
 }
diff --git a/src/libstddjb/genwrite_put_bufalloc.c b/src/libstddjb/genwrite_put_bufalloc.c
index 4b5830d..98a5919 100644
--- a/src/libstddjb/genwrite_put_bufalloc.c
+++ b/src/libstddjb/genwrite_put_bufalloc.c
@@ -6,6 +6,5 @@
 
 ssize_t genwrite_put_bufalloc (void *target, char const *s, size_t len)
 {
-  register bufalloc *ba = target ;
-  return bufalloc_put(ba, s, len) ? (ssize_t)len : -1 ;
+  return bufalloc_put((bufalloc *)target, s, len) ? (ssize_t)len : -1 ;
 }
diff --git a/src/libstddjb/genwrite_put_buffer.c b/src/libstddjb/genwrite_put_buffer.c
index e5d7843..8a710b9 100644
--- a/src/libstddjb/genwrite_put_buffer.c
+++ b/src/libstddjb/genwrite_put_buffer.c
@@ -6,6 +6,5 @@
 
 ssize_t genwrite_put_buffer (void *target, char const *s, size_t len)
 {
-  register buffer *b = target ;
-  return buffer_put(b, s, len) ;
+  return buffer_put((buffer *)target, s, len) ;
 }
diff --git a/src/libstddjb/genwrite_put_stralloc.c b/src/libstddjb/genwrite_put_stralloc.c
index 6f1e2b7..14583fb 100644
--- a/src/libstddjb/genwrite_put_stralloc.c
+++ b/src/libstddjb/genwrite_put_stralloc.c
@@ -6,6 +6,5 @@
 
 ssize_t genwrite_put_stralloc (void *target, char const *s, size_t len)
 {
-  register stralloc *sa = target ;
-  return stralloc_catb(sa, s, len) ? (ssize_t)len : -1 ;
+  return stralloc_catb((stralloc *)target, s, len) ? (ssize_t)len : -1 ;
 }
diff --git a/src/libstddjb/getlnmax.c b/src/libstddjb/getlnmax.c
index 6f6783a..7f7d679 100644
--- a/src/libstddjb/getlnmax.c
+++ b/src/libstddjb/getlnmax.c
@@ -1,10 +1,9 @@
 /* ISC license. */
 
-#include <sys/types.h>
 #include <sys/uio.h>
 #include <errno.h>
-#include <skalibs/bytestr.h>
 #include <skalibs/buffer.h>
+#include <skalibs/siovec.h>
 #include <skalibs/skamisc.h>
 
 int getlnmax (buffer *b, char *d, size_t max, size_t *w, char sep)
diff --git a/src/libstddjb/getlnmaxsep.c b/src/libstddjb/getlnmaxsep.c
index 8505417..7b7dc0e 100644
--- a/src/libstddjb/getlnmaxsep.c
+++ b/src/libstddjb/getlnmaxsep.c
@@ -1,6 +1,5 @@
 /* ISC license. */
 
-#include <sys/types.h>
 #include <sys/uio.h>
 #include <errno.h>
 #include <skalibs/buffer.h>
diff --git a/src/libstddjb/getpeereid.c b/src/libstddjb/getpeereid.c
index bf70aca..581aac1 100644
--- a/src/libstddjb/getpeereid.c
+++ b/src/libstddjb/getpeereid.c
@@ -19,7 +19,7 @@
 int getpeereid (int s, uid_t *u, gid_t *g)
 {
   struct ucred blah ;
-  unsigned int len = sizeof(blah) ;
+  socklen_t len = sizeof(blah) ;
 
   if (getsockopt(s, SOL_SOCKET, SO_PEERCRED, &blah, &len) == -1)
     return -1 ;
diff --git a/src/libstddjb/hiercopy.c b/src/libstddjb/hiercopy.c
index 34f027e..3fc4d2f 100644
--- a/src/libstddjb/hiercopy.c
+++ b/src/libstddjb/hiercopy.c
@@ -1,7 +1,7 @@
 /* ISC license. */
 
-#include <skalibs/djbunix.h>
 #include <skalibs/skamisc.h>
+#include <skalibs/djbunix.h>
 
 int hiercopy (char const *src, char const *dst)
 {
diff --git a/src/libstddjb/hiercopy_tmp.c b/src/libstddjb/hiercopy_tmp.c
index ef76b57..79b7b46 100644
--- a/src/libstddjb/hiercopy_tmp.c
+++ b/src/libstddjb/hiercopy_tmp.c
@@ -1,9 +1,8 @@
 /* ISC license. */
 
-#include <sys/types.h>
-#include <sys/stat.h>
 #include <string.h>
 #include <unistd.h>
+#include <sys/stat.h>
 #include <errno.h>
 #include <fcntl.h>
 #include <skalibs/strerr2.h>
diff --git a/src/libstddjb/iobuffer_fill.c b/src/libstddjb/iobuffer_fill.c
index 991dffc..a122090 100644
--- a/src/libstddjb/iobuffer_fill.c
+++ b/src/libstddjb/iobuffer_fill.c
@@ -1,13 +1,14 @@
 /* ISC license. */
 
+#include <sys/types.h>
 #include <errno.h>
 #include <skalibs/iobuffer.h>
 
-int iobuffer_fill (iobuffer_ref b)
+ssize_t iobuffer_fill (iobuffer_ref b)
 {
   if (b->isk)
   {
-    register int r = iobufferk_fill(&b->x.k) ;
+    ssize_t r = iobufferk_fill(&b->x.k) ;
     if (r >= 0 || errno != ENOSYS || !iobuffer_salvage(b)) return r ;
   }
   return iobufferu_fill(&b->x.u) ;
diff --git a/src/libstddjb/iobuffer_kfromu.c b/src/libstddjb/iobuffer_kfromu.c
index 7942541..91525a5 100644
--- a/src/libstddjb/iobuffer_kfromu.c
+++ b/src/libstddjb/iobuffer_kfromu.c
@@ -9,7 +9,6 @@
 #include <sys/uio.h>
 #include <skalibs/buffer.h>
 #include <skalibs/iobuffer.h>
-#include <skalibs/siovec.h>
 
 int iobuffer_kfromu (iobufferk *k, iobufferu *u)
 {
diff --git a/src/libstddjb/iobuffer_ufromk.c b/src/libstddjb/iobuffer_ufromk.c
index 778ddf2..940818d 100644
--- a/src/libstddjb/iobuffer_ufromk.c
+++ b/src/libstddjb/iobuffer_ufromk.c
@@ -4,6 +4,7 @@
 
 #ifdef SKALIBS_HASSPLICE
 
+#include <sys/types.h>
 #include <skalibs/iobuffer.h>
 
 int iobuffer_ufromk (iobufferu *u, iobufferk *k)
@@ -12,7 +13,7 @@ int iobuffer_ufromk (iobufferu *u, iobufferk *k)
   u->b[0].fd = k->p[0] ;
   while (k->n)
   {
-    register int r = iobufferu_fill(u) ;
+    ssize_t r = iobufferu_fill(u) ;
     if (r <= 0) goto err ;
     k->n -= r ;
   }
diff --git a/src/libstddjb/iobufferk_fill.c b/src/libstddjb/iobufferk_fill.c
index c811c24..0ae8763 100644
--- a/src/libstddjb/iobufferk_fill.c
+++ b/src/libstddjb/iobufferk_fill.c
@@ -9,30 +9,30 @@
 #include <errno.h>
 #include <skalibs/iobuffer.h>
 
-static int iobufferk_tee (iobufferk *k)
+static ssize_t iobufferk_tee (iobufferk *k)
 {
-  register int r = tee(k->fd[0], k->fd[1], IOBUFFERK_SIZE - k->n, k->nb & 1 ? SPLICE_F_NONBLOCK : 0) ;
+  ssize_t r = tee(k->fd[0], k->fd[1], IOBUFFERK_SIZE - k->n, k->nb & 1 ? SPLICE_F_NONBLOCK : 0) ;
   if (r > 0) k->n += r ;
   return r ;
 }
 
-static int iobufferk_splice (iobufferk *k)
+static ssize_t iobufferk_splice (iobufferk *k)
 {
-  register int r = splice(k->fd[0], 0, k->fd[1], 0, IOBUFFERK_SIZE, k->nb ? SPLICE_F_NONBLOCK : 0) ;
+  ssize_t r = splice(k->fd[0], 0, k->fd[1], 0, IOBUFFERK_SIZE, k->nb ? SPLICE_F_NONBLOCK : 0) ;
   if (r > 0) k->n += r ;
   if ((r < 0) && (errno == EINVAL)) errno = ENOSYS ;
   return r ;
 }
 
-static int iobufferk_fill_3 (iobufferk *k)
+static ssize_t iobufferk_fill_3 (iobufferk *k)
 {
-  register int r = splice(k->fd[0], 0, k->p[1], 0, IOBUFFERK_SIZE - k->n, k->nb & 1 ? SPLICE_F_NONBLOCK : 0) ;
+  ssize_t r = splice(k->fd[0], 0, k->p[1], 0, IOBUFFERK_SIZE - k->n, k->nb & 1 ? SPLICE_F_NONBLOCK : 0) ;
   if (r > 0) k->n += r ;
   if ((r < 0) && (errno == EINVAL)) errno = ENOSYS ;
   return r ;
 }
 
-iobufferk_io_func_t_ref const iobufferk_fill_f[4] =
+iobufferk_input_func_t_ref const iobufferk_fill_f[4] =
 {
   &iobufferk_tee, &iobufferk_splice, &iobufferk_splice, &iobufferk_fill_3
 } ;
@@ -41,9 +41,15 @@ iobufferk_io_func_t_ref const iobufferk_fill_f[4] =
 
 #include <skalibs/iobuffer.h>
 
-iobufferk_io_func_t_ref const iobufferk_fill_f[4] =
+static ssize_t iobufferk_inosys (iobufferk *k)
 {
-  &iobufferk_nosys, &iobufferk_nosys, &iobufferk_nosys, &iobufferk_nosys
+  (void)k ;
+  return (errno = ENOSYS, -1) ;
+}
+
+iobufferk_input_func_t_ref const iobufferk_fill_f[4] =
+{
+  &iobufferk_inosys, &iobufferk_inosys, &iobufferk_inosys, &iobufferk_inosys
 } ;
 
 #endif
diff --git a/src/libstddjb/iobufferk_flush.c b/src/libstddjb/iobufferk_flush.c
index 674ffec..9bbff7d 100644
--- a/src/libstddjb/iobufferk_flush.c
+++ b/src/libstddjb/iobufferk_flush.c
@@ -13,7 +13,7 @@ static int iobufferk_flush_0 (iobufferk *k)
 {
   while (k->n)
   {
-    register int r = splice(k->fd[0], 0, k->p[1], 0, k->n, 0) ;
+    ssize_t r = splice(k->fd[0], 0, k->p[1], 0, k->n, 0) ;
     if (r < 0) return 0 ;
     else if (!r) break ;
     k->n -= r ;
@@ -31,7 +31,7 @@ static int iobufferk_flush_3 (iobufferk *k)
 {
   while (k->n)
   {
-    register int r = splice(k->p[0], 0, k->fd[1], 0, k->n, SPLICE_F_MORE | (k->nb & 2 ? SPLICE_F_NONBLOCK : 0)) ;
+    ssize_t r = splice(k->p[0], 0, k->fd[1], 0, k->n, SPLICE_F_MORE | (k->nb & 2 ? SPLICE_F_NONBLOCK : 0)) ;
     if (r < 0)
     {
       if (errno == EINVAL) errno = ENOSYS ;
@@ -43,7 +43,7 @@ static int iobufferk_flush_3 (iobufferk *k)
   return 1 ;
 }
 
-iobufferk_io_func_t_ref const iobufferk_flush_f[4] =
+iobufferk_output_func_t_ref const iobufferk_flush_f[4] =
 {
   &iobufferk_flush_0, &fakeflush, &fakeflush, &iobufferk_flush_3
 } ;
@@ -53,9 +53,15 @@ iobufferk_io_func_t_ref const iobufferk_flush_f[4] =
 #include <errno.h>
 #include <skalibs/iobuffer.h>
 
-iobufferk_io_func_t_ref const iobufferk_flush_f[4] =
+static int iobufferk_onosys (iobuffer_k *k)
 {
-  &iobufferk_nosys, &iobufferk_nosys, &iobufferk_nosys, &iobufferk_nosys
+  (void)k ;
+  return (errno = ENOSYS, -1) ;
+}
+
+iobufferk_output_func_t_ref const iobufferk_flush_f[4] =
+{
+  &iobufferk_onosys, &iobufferk_onosys, &iobufferk_onosys, &iobufferk_onosys
 } ;
 
 #endif
diff --git a/src/libstddjb/iobufferk_init.c b/src/libstddjb/iobufferk_init.c
index 7affabd..93cd615 100644
--- a/src/libstddjb/iobufferk_init.c
+++ b/src/libstddjb/iobufferk_init.c
@@ -11,7 +11,7 @@
 
 static int iobufferk_init_0 (iobufferk *k)
 {
-  register int fd = open_write("/dev/null") ;
+  int fd = open_write("/dev/null") ;
   if (fd < 0) return 0 ;
   if (coe(fd) < 0)
   {
@@ -34,7 +34,7 @@ static int iobufferk_init_3 (iobufferk *k)
   return (pipenbcoe(k->p) >= 0) ;
 }
 
-static iobufferk_io_func_t_ref iobufferk_init_f[4] =
+static iobufferk_output_func_t_ref iobufferk_init_f[4] =
 {
   &iobufferk_init_0, &iobufferk_nofd, &iobufferk_nofd, &iobufferk_init_3
 } ;
@@ -43,7 +43,7 @@ int iobufferk_init (iobufferk *k, int fdin, int fdout)
 {
   iobufferk tmp ;
   struct stat st ;
-  register int r ;
+  int r ;
   if (fstat(fdin, &st) < 0) return 0 ;
   r = fcntl(fdin, F_GETFL) ;
   if (r < 0) return 0 ;
diff --git a/src/libstddjb/iobufferk_isworking.c b/src/libstddjb/iobufferk_isworking.c
index f671f81..119d130 100644
--- a/src/libstddjb/iobufferk_isworking.c
+++ b/src/libstddjb/iobufferk_isworking.c
@@ -17,7 +17,7 @@ int iobufferk_isworking (iobufferk *k)
 
 # if 0
 
-  register int e = errno ;
+  int e = errno ;
   if (splice(k->fd[0], 0, k->p[1], 0, 0, 0) < 0) goto no ;
   if (splice(k->p[0], 0, k->fd[1], 0, 0, 0) < 0) goto no ;
   errno = e ;
@@ -45,4 +45,3 @@ int iobufferk_isworking (iobufferk *k)
 }
 
 #endif
-
diff --git a/src/libstddjb/iobufferk_nosys.c b/src/libstddjb/iobufferk_nosys.c
deleted file mode 100644
index 363e400..0000000
--- a/src/libstddjb/iobufferk_nosys.c
+++ /dev/null
@@ -1,10 +0,0 @@
-/* ISC license. */
-
-#include <errno.h>
-#include <skalibs/iobuffer.h>
-
-int iobufferk_nosys (iobufferk *k)
-{
-  (void)k ;
-  return (errno = ENOSYS, -1) ;
-}
diff --git a/src/libstddjb/iobufferu_fill.c b/src/libstddjb/iobufferu_fill.c
index de1a56c..7867444 100644
--- a/src/libstddjb/iobufferu_fill.c
+++ b/src/libstddjb/iobufferu_fill.c
@@ -3,9 +3,9 @@
 #include <skalibs/buffer.h>
 #include <skalibs/iobuffer.h>
 
-int iobufferu_fill (iobufferu *b)
+ssize_t iobufferu_fill (iobufferu *b)
 {
-  register int r = buffer_fill(&b->b[0]) ;
+  ssize_t r = buffer_fill(&b->b[0]) ;
   b->b[1].c.n = b->b[0].c.n ;
   return r ;
 }
diff --git a/src/libstddjb/iobufferu_flush.c b/src/libstddjb/iobufferu_flush.c
index 8830599..ad0fd9e 100644
--- a/src/libstddjb/iobufferu_flush.c
+++ b/src/libstddjb/iobufferu_flush.c
@@ -5,7 +5,7 @@
 
 int iobufferu_flush (iobufferu *b)
 {
-  register int r = buffer_flush(&b->b[1]) ;
+  int r = buffer_flush(&b->b[1]) ;
   b->b[0].c.p = b->b[1].c.p ;
   return r ;
 }
diff --git a/src/libstddjb/iopause_poll.c b/src/libstddjb/iopause_poll.c
index e4e4da1..396122b 100644
--- a/src/libstddjb/iopause_poll.c
+++ b/src/libstddjb/iopause_poll.c
@@ -7,7 +7,7 @@
 
 int iopause_poll (iopause_fd *x, unsigned int len, tain_t const *deadline, tain_t const *stamp)
 {
-  register int millisecs = 0 ;
+  int millisecs = 0 ;
   if (!deadline) millisecs = -1 ;
   else if (tain_less(stamp, deadline))
   {
diff --git a/src/libstddjb/iopause_select.c b/src/libstddjb/iopause_select.c
index dd433b7..3e56705 100644
--- a/src/libstddjb/iopause_select.c
+++ b/src/libstddjb/iopause_select.c
@@ -34,7 +34,7 @@ int iopause_select (iopause_fd *x, unsigned int len, tain_t const *deadline, tai
   }
 
   {
-    register unsigned int i = 0 ;
+    unsigned int i = 0 ;
     for (; i < len ; i++)
     {
       x[i].revents = 0 ;
@@ -52,7 +52,7 @@ int iopause_select (iopause_fd *x, unsigned int len, tain_t const *deadline, tai
 
   if (r > 0)
   {
-    register unsigned int i = 0 ;
+    unsigned int i = 0 ;
     for (; i < len ; i++) if (x[i].fd >= 0)
     {
       if ((x[i].events & IOPAUSE_READ) && FD_ISSET(x[i].fd, &rfds))
diff --git a/src/libstddjb/iopause_stamp.c b/src/libstddjb/iopause_stamp.c
index d9a7e31..81056f4 100644
--- a/src/libstddjb/iopause_stamp.c
+++ b/src/libstddjb/iopause_stamp.c
@@ -4,9 +4,9 @@
 #include <skalibs/tai.h>
 #include <skalibs/iopause.h>
 
-extern int iopause_stamp (iopause_fd *x, unsigned int n, tain_t const *deadline, tain_t *stamp)
+int iopause_stamp (iopause_fd *x, unsigned int n, tain_t const *deadline, tain_t *stamp)
 {
-  register int r ;
+  int r ;
   do
   {
     r = iopause(x, n, deadline, stamp) ;
diff --git a/src/libstddjb/ip46_scanlist.c b/src/libstddjb/ip46_scanlist.c
index 7ee2b68..d6d5cbc 100644
--- a/src/libstddjb/ip46_scanlist.c
+++ b/src/libstddjb/ip46_scanlist.c
@@ -1,9 +1,8 @@
 /* ISC license. */
 
-#include <sys/types.h>
-#include <skalibs/ip46.h>
-#include <skalibs/bytestr.h>
+#include <string.h>
 #include <skalibs/fmtscan.h>
+#include <skalibs/ip46.h>
 
 size_t ip46full_scanlist (ip46full_t *out, size_t max, char const *s, size_t *num)
 {
@@ -11,7 +10,7 @@ size_t ip46full_scanlist (ip46full_t *out, size_t max, char const *s, size_t *nu
   for (; s[w] && (n < max) ; n++)
   {
     ip46full_t z ;
-    register size_t i = ip6_scan(s + w, z.ip) ;
+    size_t i = ip6_scan(s + w, z.ip) ;
     if (i) z.is6 = 1 ;
     else
     {
@@ -21,7 +20,7 @@ size_t ip46full_scanlist (ip46full_t *out, size_t max, char const *s, size_t *nu
     }
     out[n] = z ;
     w += i ;
-    while (byte_chr(",; \t\r\n", 6, s[w]) < 6) w++ ;
+    while (memchr(",; \t\r\n", s[w], 6)) w++ ;
   }
   *num = n ;
   return w ;
diff --git a/src/libstddjb/ip4_scan.c b/src/libstddjb/ip4_scan.c
index 749a176..19c2cec 100644
--- a/src/libstddjb/ip4_scan.c
+++ b/src/libstddjb/ip4_scan.c
@@ -6,11 +6,11 @@
 size_t ip4_scan (char const *s, char *ip)
 {
   size_t len = 0 ;
-  register unsigned int j = 0 ;
+  unsigned int j = 0 ;
   for (; j < 4 ; j++)
   {
     unsigned int u ;
-    register size_t i = uint_scan(s, &u) ;
+    size_t i = uint_scan(s, &u) ;
     if (!i) return 0 ;
     ip[j] = (char)u ;
     s += i ;
diff --git a/src/libstddjb/ip4_scanlist.c b/src/libstddjb/ip4_scanlist.c
index edc2949..21985bd 100644
--- a/src/libstddjb/ip4_scanlist.c
+++ b/src/libstddjb/ip4_scanlist.c
@@ -1,7 +1,6 @@
 /* ISC license. */
 
-#include <sys/types.h>
-#include <skalibs/bytestr.h>
+#include <string.h>
 #include <skalibs/fmtscan.h>
 
 size_t ip4_scanlist (char *out, size_t max, char const *s, size_t *num)
@@ -9,10 +8,10 @@ size_t ip4_scanlist (char *out, size_t max, char const *s, size_t *num)
   size_t n = 0, w = 0 ;
   for (; s[w] && (n < max) ; n++)
   {
-    register size_t i = ip4_scan(s + w, out + (n << 2)) ;
+    size_t i = ip4_scan(s + w, out + (n << 2)) ;
     if (!i) break ;
     w += i ;
-    while (byte_chr(",:; \t\r\n", 7, s[w]) < 7) w++ ;
+    while (memchr(",:; \t\r\n", s[w], 7)) w++ ;
   }
   *num = n ;
   return w ;
diff --git a/src/libstddjb/ip4_scanlist_u32.c b/src/libstddjb/ip4_scanlist_u32.c
index 10c24cf..5515bca 100644
--- a/src/libstddjb/ip4_scanlist_u32.c
+++ b/src/libstddjb/ip4_scanlist_u32.c
@@ -1,9 +1,7 @@
 /* ISC license. */
 
-#include <sys/types.h>
 #include <stdint.h>
-#include <skalibs/uint32.h>
-#include <skalibs/bytestr.h>
+#include <string.h>
 #include <skalibs/fmtscan.h>
 
 size_t ip4_scanlist_u32 (uint32_t *out, size_t max, char const *s, size_t *num)
@@ -11,10 +9,10 @@ size_t ip4_scanlist_u32 (uint32_t *out, size_t max, char const *s, size_t *num)
   size_t n = 0, w = 0 ;
   for (; s[w] && (n < max) ; n++)
   {
-    register size_t i = ip4_scanu32(s + w, out + n) ;
+    size_t i = ip4_scanu32(s + w, out + n) ;
     if (!i) break ;
     w += i ;
-    while (byte_chr(",:; \t\r\n", 7, s[w]) < 7) w++ ;
+    while (memchr(",:; \t\r\n", s[w], 7)) w++ ;
   }
   *num = n ;
   return w ;
diff --git a/src/libstddjb/ip6_scan.c b/src/libstddjb/ip6_scan.c
index 1e34051..1837d3d 100644
--- a/src/libstddjb/ip6_scan.c
+++ b/src/libstddjb/ip6_scan.c
@@ -16,7 +16,7 @@ size_t ip6_scan (char const *s, char *ip6)
 
   while (state < 5)
   {
-    register unsigned char c = table[state][class[(unsigned char)s[i]] - '0'] ;
+    unsigned char c = table[state][class[(unsigned char)s[i]] - '0'] ;
     state = c & 7 ;
     if (c & 0x20) { if (pos < 8) state = 5 ; else pos = j ; }
     if (c & 0x10)
diff --git a/src/libstddjb/ip6_scanlist.c b/src/libstddjb/ip6_scanlist.c
index cf1c7fd..33eb055 100644
--- a/src/libstddjb/ip6_scanlist.c
+++ b/src/libstddjb/ip6_scanlist.c
@@ -1,7 +1,6 @@
 /* ISC license. */
 
-#include <sys/types.h>
-#include <skalibs/bytestr.h>
+#include <string.h>
 #include <skalibs/fmtscan.h>
 
 size_t ip6_scanlist (char *out, size_t max, char const *s, size_t *num)
@@ -10,11 +9,11 @@ size_t ip6_scanlist (char *out, size_t max, char const *s, size_t *num)
   for (; s[w] && (n < max) ; n++)
   {
     char ip[16] ;
-    register size_t i = ip6_scan(s + w, ip) ;
+    size_t i = ip6_scan(s + w, ip) ;
     if (!i) break ;
-    byte_copy(out + (n << 4), 16, ip) ;
+    memcpy(out + (n << 4), ip, 16) ;
     w += i ;
-    while (byte_chr(",; \t\r\n", 6, s[w]) < 6) w++ ;
+    while (memchr(",; \t\r\n", s[w], 6)) w++ ;
   }
   *num = n ;
   return w ;
diff --git a/src/libstddjb/ipc_accept.c b/src/libstddjb/ipc_accept.c
index dc3eae7..5ff82d8 100644
--- a/src/libstddjb/ipc_accept.c
+++ b/src/libstddjb/ipc_accept.c
@@ -5,16 +5,17 @@
 #include <errno.h>
 #include <sys/socket.h>
 #include <sys/un.h>
+#include <string.h>
 #include <skalibs/bytestr.h>
 #include <skalibs/djbunix.h>
 #include <skalibs/webipc.h>
 
-int ipc_accept_internal (int s, char *p, unsigned int l, int *trunc, unsigned int options)
+int ipc_accept_internal (int s, char *p, size_t l, int *trunc, unsigned int options)
 {
   struct sockaddr_un sa ;
   socklen_t dummy = sizeof sa ;
-  register int fd ;
-  byte_zero((char*)&sa, (unsigned int)dummy) ;
+  int fd ;
+  memset(&sa, 0, dummy) ;
   do
 #ifdef SKALIBS_HASACCEPT4
     fd = accept4(s, (struct sockaddr *)&sa, &dummy, ((options & DJBUNIX_FLAG_NB) ? SOCK_NONBLOCK : 0) | ((options & DJBUNIX_FLAG_COE) ? SOCK_CLOEXEC : 0)) ;
@@ -27,7 +28,7 @@ int ipc_accept_internal (int s, char *p, unsigned int l, int *trunc, unsigned in
   if ((((options & DJBUNIX_FLAG_NB) ? ndelay_on(fd) : ndelay_off(fd)) < 0)
    || (((options & DJBUNIX_FLAG_COE) ? coe(fd) : uncoe(fd)) < 0))
   {
-    register int e = errno ;
+    int e = errno ;
     fd_close(fd) ;
     errno = e ;
     return -1 ;
@@ -41,7 +42,7 @@ int ipc_accept_internal (int s, char *p, unsigned int l, int *trunc, unsigned in
     if (!l) return fd ;
     if (l < (dummy + 1)) dummy = l - 1 ;
     else *trunc = 0 ;
-    byte_copy(p, dummy, sa.sun_path) ;
+    memcpy(p, sa.sun_path, dummy) ;
     p[dummy] = 0 ;
   }
   return fd ;
diff --git a/src/libstddjb/ipc_bind.c b/src/libstddjb/ipc_bind.c
index 2bb8678..8686591 100644
--- a/src/libstddjb/ipc_bind.c
+++ b/src/libstddjb/ipc_bind.c
@@ -3,18 +3,18 @@
 #include <skalibs/nonposix.h>
 #include <sys/socket.h>
 #include <sys/un.h>
+#include <string.h>
 #include <errno.h>
-#include <skalibs/bytestr.h>
 #include <skalibs/error.h>
 #include <skalibs/webipc.h>
 
 int ipc_bind (int s, char const *p)
 {
   struct sockaddr_un sa ;
-  register unsigned int l = str_len(p) ;
+  size_t l = strlen(p) ;
   if (l > IPCPATH_MAX) return (errno = EPROTO, -1) ;
-  byte_zero((char *)&sa, sizeof sa) ;
+  memset(&sa, 0, sizeof sa) ;
   sa.sun_family = AF_UNIX ;
-  byte_copy(sa.sun_path, l+1, p) ;
+  memcpy(sa.sun_path, p, l+1) ;
   return bind(s, (struct sockaddr *)&sa, sizeof sa) ;
 }
diff --git a/src/libstddjb/ipc_connect.c b/src/libstddjb/ipc_connect.c
index 6c5eac2..9aa4dd9 100644
--- a/src/libstddjb/ipc_connect.c
+++ b/src/libstddjb/ipc_connect.c
@@ -4,18 +4,18 @@
 #include <errno.h>
 #include <sys/socket.h>
 #include <sys/un.h>
-#include <skalibs/bytestr.h>
+#include <string.h>
 #include <skalibs/error.h>
 #include <skalibs/webipc.h>
 
 int ipc_connect (int s, char const *p)
 {
   struct sockaddr_un sa ;
-  unsigned int l = str_len(p) ;
+  size_t l = strlen(p) ;
   if (l > IPCPATH_MAX) return (errno = EPROTO, 0) ;
-  byte_zero((char *) &sa, sizeof sa) ;
+  memset(&sa, 0, sizeof sa) ;
   sa.sun_family = AF_UNIX ;
-  byte_copy(sa.sun_path, l+1, p) ;
+  memcpy(sa.sun_path, p, l+1) ;
   if (connect(s, (struct sockaddr *)&sa, sizeof sa) == -1)
   {
     if (errno == EINTR) errno = EINPROGRESS ;
diff --git a/src/libstddjb/ipc_connected.c b/src/libstddjb/ipc_connected.c
index 4965c9f..a079fd5 100644
--- a/src/libstddjb/ipc_connected.c
+++ b/src/libstddjb/ipc_connected.c
@@ -13,7 +13,7 @@ int ipc_connected (int s)
   if (getpeername(s, (struct sockaddr *)&sa, &dummy) == -1)
   {
     char ch ;
-    fd_read(s, &ch, 1) ; /* sets errno */
+    fd_read(s, &ch, 1) ;
     return 0 ;
   }
   return 1 ;
diff --git a/src/libstddjb/ipc_eid.c b/src/libstddjb/ipc_eid.c
deleted file mode 100644
index 81f608a..0000000
--- a/src/libstddjb/ipc_eid.c
+++ /dev/null
@@ -1,15 +0,0 @@
-/* ISC license. */
-
-#include <sys/types.h>
-#include <skalibs/getpeereid.h>
-#include <skalibs/webipc.h>
-
-int ipc_eid (int s, unsigned int *u, unsigned int *g)
-{
-  uid_t dummyu ;
-  gid_t dummyg ;
-  if (getpeereid(s, &dummyu, &dummyg) < 0) return -1 ;
-  *u = (unsigned int)dummyu ;
-  *g = (unsigned int)dummyg ;
-  return 0 ;
-}
diff --git a/src/libstddjb/ipc_local.c b/src/libstddjb/ipc_local.c
index 57ffb37..e617264 100644
--- a/src/libstddjb/ipc_local.c
+++ b/src/libstddjb/ipc_local.c
@@ -3,21 +3,22 @@
 #include <skalibs/nonposix.h>
 #include <sys/socket.h>
 #include <sys/un.h>
+#include <string.h>
 #include <skalibs/bytestr.h>
 #include <skalibs/webipc.h>
 
-int ipc_local (int s, char *p, unsigned int l, int *trunc)
+int ipc_local (int s, char *p, size_t l, int *trunc)
 {
   struct sockaddr_un sa ;
   socklen_t dummy = sizeof sa ;
-  byte_zero((char *)&sa, sizeof sa) ;
+  memset(&sa, 0, sizeof sa) ;
   if (getsockname(s, (struct sockaddr *)&sa, &dummy) == -1) return -1 ;
   dummy = byte_chr(sa.sun_path, dummy, 0) ;
   *trunc = 1 ;
   if (!l) return 0 ;
   if (l < (dummy + 1)) dummy = l - 1 ;
   else *trunc = 0 ;
-  byte_copy(p, dummy, sa.sun_path) ;
+  memcpy(p, sa.sun_path, dummy) ;
   p[dummy] = 0 ;
   return 0 ;
 }
diff --git a/src/libstddjb/ipc_recv.c b/src/libstddjb/ipc_recv.c
index 599bad8..5aa1c2b 100644
--- a/src/libstddjb/ipc_recv.c
+++ b/src/libstddjb/ipc_recv.c
@@ -4,16 +4,16 @@
 #include <errno.h>
 #include <sys/socket.h>
 #include <sys/un.h>
-#include <skalibs/bytestr.h>
+#include <string.h>
 #include <skalibs/error.h>
 #include <skalibs/webipc.h>
 
-int ipc_recv (int fd, char *s, unsigned int len, char *path)
+ssize_t ipc_recv (int fd, char *s, size_t len, char *path)
 {
   struct sockaddr_un sa = { .sun_family = AF_UNIX } ;
   socklen_t total = sizeof sa ;
   char tmp[len] ;
-  register int r ;
+  ssize_t r ;
   do r = recvfrom(fd, tmp, len, 0, (struct sockaddr *)&sa, &total) ;
   while ((r == -1) && (errno == EINTR)) ;
   if (r < 0) return r ;
@@ -23,11 +23,11 @@ int ipc_recv (int fd, char *s, unsigned int len, char *path)
     if (total == sizeof(sa_family_t)) path[0] = 0 ;
     else
     {
-      unsigned int l = str_len(sa.sun_path) ;
+      size_t l = strlen(sa.sun_path) ;
       if (l > IPCPATH_MAX) return (errno = EPROTO, -1) ;
-      byte_copy(path, l+1, sa.sun_path) ;
+      memcpy(path, sa.sun_path, l+1) ;
     }
   }
-  byte_copy(s, r, tmp) ;
+  memcpy(s, tmp, r) ;
   return r ;
 }
diff --git a/src/libstddjb/ipc_send.c b/src/libstddjb/ipc_send.c
index 0e71d98..967a64f 100644
--- a/src/libstddjb/ipc_send.c
+++ b/src/libstddjb/ipc_send.c
@@ -4,17 +4,17 @@
 #include <errno.h>
 #include <sys/socket.h>
 #include <sys/un.h>
-#include <skalibs/bytestr.h>
+#include <string.h>
 #include <skalibs/error.h>
 #include <skalibs/webipc.h>
 
-int ipc_send (int fd, char const *s, unsigned int len, char const *path)
+ssize_t ipc_send (int fd, char const *s, size_t len, char const *path)
 {
   struct sockaddr_un sa ;
-  register unsigned int l = str_len(path) ;
+  size_t l = strlen(path) ;
   if (l > IPCPATH_MAX) return (errno = EPROTO, -1) ;
-  byte_zero(&sa, sizeof sa) ;
+  memset(&sa, 0, sizeof sa) ;
   sa.sun_family = AF_UNIX ;
-  byte_copy(sa.sun_path, l+1, path) ;
+  memcpy(sa.sun_path, path, l+1) ;
   return sendto(fd, s, len, 0, (struct sockaddr *)&sa, sizeof sa) ;
 }
diff --git a/src/libstddjb/ipc_timed_connect.c b/src/libstddjb/ipc_timed_connect.c
index 4f8e73d..32e496e 100644
--- a/src/libstddjb/ipc_timed_connect.c
+++ b/src/libstddjb/ipc_timed_connect.c
@@ -14,7 +14,7 @@ int ipc_timed_connect (int s, char const *path, tain_t const *deadline, tain_t *
     if (!error_isagain(errno) && !error_isalready(errno)) return 0 ;
     for (;;)
     {
-      register int r = iopause_stamp(&x, 1, deadline, stamp) ;
+      int r = iopause_stamp(&x, 1, deadline, stamp) ;
       if (r < 0) return 0 ;
       else if (!r) return (errno = ETIMEDOUT, 0) ;
       else if (x.revents & IOPAUSE_EXCEPT) return 0 ;
diff --git a/src/libstddjb/leapsecs_add.c b/src/libstddjb/leapsecs_add.c
index 4b75f7d..7473693 100644
--- a/src/libstddjb/leapsecs_add.c
+++ b/src/libstddjb/leapsecs_add.c
@@ -3,10 +3,10 @@
 #include <skalibs/uint64.h>
 #include "djbtime-internal.h"
 
-void leapsecs_add (uint64 *t, int hit)
+void leapsecs_add (uint64_t *t, int hit)
 {
-  uint64 u = *t ;
-  register unsigned int i = 0 ;
+  uint64_t u = *t ;
+  unsigned int i = 0 ;
   for (; i < leapsecs_table_len ; i++)
   {
     if (u < leapsecs_table[i]) break ;
diff --git a/src/libstddjb/leapsecs_sub.c b/src/libstddjb/leapsecs_sub.c
index f466fac..f5c1c9b 100644
--- a/src/libstddjb/leapsecs_sub.c
+++ b/src/libstddjb/leapsecs_sub.c
@@ -3,12 +3,12 @@
 #include <skalibs/uint64.h>
 #include "djbtime-internal.h"
 
-int leapsecs_sub (uint64 *t)
+int leapsecs_sub (uint64_t *t)
 {
-  uint64 u = *t ;
-  uint64 d = 0 ;
-  register unsigned int i = 0 ;
-  register int hit = 0 ;
+  uint64_t u = *t ;
+  uint64_t d = 0 ;
+  unsigned int i = 0 ;
+  int hit = 0 ;
   for (; i < leapsecs_table_len ; i++)
   {
     if (u < leapsecs_table[i]) break ;
diff --git a/src/libstddjb/leapsecs_table.c b/src/libstddjb/leapsecs_table.c
index fcf17fa..5fd538b 100644
--- a/src/libstddjb/leapsecs_table.c
+++ b/src/libstddjb/leapsecs_table.c
@@ -7,7 +7,7 @@
 #include "djbtime-internal.h"
 
 unsigned int const leapsecs_table_len = 27 ;
-static uint64 const leapsecs_table_[27] =
+static uint64_t const leapsecs_table_[27] =
 {
   TAI_MAGIC + 78796809,
   TAI_MAGIC + 94694410,
@@ -37,4 +37,4 @@ static uint64 const leapsecs_table_[27] =
   TAI_MAGIC + 1435708834,
   TAI_MAGIC + 1483228835
 } ;
-uint64 const *const leapsecs_table = leapsecs_table_ ;
+uint64_t const *const leapsecs_table = leapsecs_table_ ;
diff --git a/src/libstddjb/localtm_from_ltm64.c b/src/libstddjb/localtm_from_ltm64.c
index d549df9..e2cc382 100644
--- a/src/libstddjb/localtm_from_ltm64.c
+++ b/src/libstddjb/localtm_from_ltm64.c
@@ -5,14 +5,13 @@
 #define _BSD_SOURCE
 #endif
 
-#include <sys/types.h>
 #include <errno.h>
 #include <time.h>
 #include <skalibs/uint64.h>
 #include <skalibs/tai.h>
 #include <skalibs/djbtime.h>
 
-int localtm_from_ltm64 (struct tm *l, uint64 uu, int tz)
+int localtm_from_ltm64 (struct tm *l, uint64_t uu, int tz)
 {
   if (uu < TAI_MAGIC) return (errno = EINVAL, 0) ;
   uu -= TAI_MAGIC ;
diff --git a/src/libstddjb/localtm_from_sysclock.c b/src/libstddjb/localtm_from_sysclock.c
index 939bb21..d63a6d8 100644
--- a/src/libstddjb/localtm_from_sysclock.c
+++ b/src/libstddjb/localtm_from_sysclock.c
@@ -1,11 +1,10 @@
 /* ISC license. */
 
-#include <sys/types.h>
 #include <time.h>
 #include <skalibs/uint64.h>
 #include <skalibs/djbtime.h>
 
-int localtm_from_sysclock (struct tm *l, uint64 u, int tz)
+int localtm_from_sysclock (struct tm *l, uint64_t u, int tz)
 {
   if (!ltm64_from_sysclock(&u)) return 0 ;
   return localtm_from_ltm64(l, u, tz) ;
diff --git a/src/libstddjb/localtm_from_tai.c b/src/libstddjb/localtm_from_tai.c
index ad12cf2..b6ddf47 100644
--- a/src/libstddjb/localtm_from_tai.c
+++ b/src/libstddjb/localtm_from_tai.c
@@ -1,6 +1,5 @@
 /* ISC license. */
 
-#include <sys/types.h>
 #include <time.h>
 #include <skalibs/uint64.h>
 #include <skalibs/tai.h>
@@ -8,7 +7,7 @@
 
 int localtm_from_tai (struct tm *l, tai_t const *t, int tz)
 {
-  uint64 u ;
+  uint64_t u ;
   if (!ltm64_from_tai(&u, t)) return 0 ;
   return localtm_from_ltm64(l, u, tz) ;
 }
diff --git a/src/libstddjb/localtm_from_utc.c b/src/libstddjb/localtm_from_utc.c
index 697621c..cbf6f31 100644
--- a/src/libstddjb/localtm_from_utc.c
+++ b/src/libstddjb/localtm_from_utc.c
@@ -1,11 +1,10 @@
 /* ISC license. */
 
-#include <sys/types.h>
 #include <time.h>
 #include <skalibs/uint64.h>
 #include <skalibs/djbtime.h>
 
-int localtm_from_utc (struct tm *l, uint64 u, int tz)
+int localtm_from_utc (struct tm *l, uint64_t u, int tz)
 {
   if (!ltm64_from_utc(&u)) return 0 ;
   return localtm_from_ltm64(l, u, tz) ;
diff --git a/src/libstddjb/localtm_scan.c b/src/libstddjb/localtm_scan.c
index 62bf4c3..60bf61b 100644
--- a/src/libstddjb/localtm_scan.c
+++ b/src/libstddjb/localtm_scan.c
@@ -11,7 +11,7 @@ size_t localtm_scan (char const *s, struct tm *l)
   struct tm ll = { .tm_isdst = -1 } ;
   size_t n = 0 ;
   unsigned int u ;
-  register size_t i = uint_scan(s+n, &u) ;
+  size_t i = uint_scan(s+n, &u) ;
   if (!i) goto fail ;
   n += i ;
   if (u < 1900) goto fail ;
diff --git a/src/libstddjb/localtmn_from_sysclock.c b/src/libstddjb/localtmn_from_sysclock.c
index 08e64b7..c52bca0 100644
--- a/src/libstddjb/localtmn_from_sysclock.c
+++ b/src/libstddjb/localtmn_from_sysclock.c
@@ -1,5 +1,6 @@
 /* ISC license. */
 
+#include <time.h>
 #include <skalibs/tai.h>
 #include <skalibs/djbtime.h>
 
diff --git a/src/libstddjb/localtmn_from_tain.c b/src/libstddjb/localtmn_from_tain.c
index 78cc051..f4858b7 100644
--- a/src/libstddjb/localtmn_from_tain.c
+++ b/src/libstddjb/localtmn_from_tain.c
@@ -1,5 +1,6 @@
 /* ISC license. */
 
+#include <time.h>
 #include <skalibs/tai.h>
 #include <skalibs/djbtime.h>
 
diff --git a/src/libstddjb/localtmn_scan.c b/src/libstddjb/localtmn_scan.c
index c9d4d19..d7fffe2 100644
--- a/src/libstddjb/localtmn_scan.c
+++ b/src/libstddjb/localtmn_scan.c
@@ -13,7 +13,7 @@ size_t localtmn_scan (char const *s, localtmn_t *l)
   if (*s++ != '.') m.nano = 0 ;
   else
   {
-    register size_t b = uint32_scan(s, &m.nano) ;
+    size_t b = uint32_scan(s, &m.nano) ;
     if (!b) return 0 ;
     n += b ;
   }
diff --git a/src/libstddjb/lock_ex.c b/src/libstddjb/lock_ex.c
index 19b9a9c..2645fab 100644
--- a/src/libstddjb/lock_ex.c
+++ b/src/libstddjb/lock_ex.c
@@ -12,15 +12,13 @@
 int lock_ex (int fd)
 {
   int r ;
-  do
-    r = flock(fd, LOCK_EX) ;
+  do r = flock(fd, LOCK_EX) ;
   while ((r == -1) && (errno == EINTR)) ;
   return r ;
 }
 
 #else
 
-#include <sys/types.h>
 #include <unistd.h>
 #include <errno.h>
 #include <skalibs/djbunix.h>
@@ -28,8 +26,7 @@ int lock_ex (int fd)
 int lock_ex (int fd)
 {
   int r ;
-  do
-    r = lockf(fd, F_LOCK, 0) ;
+  do r = lockf(fd, F_LOCK, 0) ;
   while ((r == -1) && (errno == EINTR)) ;
   return r ;
 }
diff --git a/src/libstddjb/lock_exnb.c b/src/libstddjb/lock_exnb.c
index a1785a9..7d5302f 100644
--- a/src/libstddjb/lock_exnb.c
+++ b/src/libstddjb/lock_exnb.c
@@ -12,15 +12,13 @@
 int lock_exnb (int fd)
 {
   int r ;
-  do
-    r = flock(fd, LOCK_EX | LOCK_NB) ;
+  do r = flock(fd, LOCK_EX | LOCK_NB) ;
   while ((r == -1) && (errno == EINTR)) ;
   return r ;
 }
 
 #else
 
-#include <sys/types.h>
 #include <unistd.h>
 #include <errno.h>
 #include <skalibs/djbunix.h>
@@ -28,8 +26,7 @@ int lock_exnb (int fd)
 int lock_exnb (int fd)
 {
   int r ;
-  do
-    r = lockf(fd, F_TLOCK, 0) ;
+  do r = lockf(fd, F_TLOCK, 0) ;
   while ((r == -1) && (errno == EINTR)) ;
   if ((r == -1) && (errno == EACCES)) errno = EAGAIN ;
   return r ;
diff --git a/src/libstddjb/lock_sh.c b/src/libstddjb/lock_sh.c
index 4a42dc1..c942d0d 100644
--- a/src/libstddjb/lock_sh.c
+++ b/src/libstddjb/lock_sh.c
@@ -11,25 +11,22 @@
 
 int lock_sh (int fd)
 {
-  register int r ;
-  do
-    r = flock(fd, LOCK_SH) ;
+  int r ;
+  do r = flock(fd, LOCK_SH) ;
   while ((r == -1) && (errno == EINTR)) ;
   return r ;
 }
 
 #else
 
-#include <sys/types.h>
 #include <unistd.h>
 #include <errno.h>
 #include <skalibs/djbunix.h>
 
 int lock_sh (int fd)
 {
-  register int r ;
-  do
-    r = lockf(fd, F_LOCK, 0) ;
+  int r ;
+  do r = lockf(fd, F_LOCK, 0) ;
   while ((r == -1) && (errno == EINTR)) ;
   return r ;
 }
diff --git a/src/libstddjb/lock_shnb.c b/src/libstddjb/lock_shnb.c
index 6a8fd42..40c988d 100644
--- a/src/libstddjb/lock_shnb.c
+++ b/src/libstddjb/lock_shnb.c
@@ -11,25 +11,22 @@
 
 int lock_shnb (int fd)
 {
-  register int r ;
-  do
-    r = flock(fd, LOCK_SH | LOCK_NB) ;
+  int r ;
+  do r = flock(fd, LOCK_SH | LOCK_NB) ;
   while ((r == -1) && (errno == EINTR)) ;
   return r ;
 }
 
 #else
 
-#include <sys/types.h>
 #include <unistd.h>
 #include <errno.h>
 #include <skalibs/djbunix.h>
 
 int lock_shnb (int fd)
 {
-  register int r ;
-  do
-    r = lockf(fd, F_TLOCK, 0) ;
+  int r ;
+  do r = lockf(fd, F_TLOCK, 0) ;
   while ((r == -1) && (errno == EINTR)) ;
   if ((r == -1) && (errno == EACCES)) errno = EAGAIN ;
   return r ;
diff --git a/src/libstddjb/lock_un.c b/src/libstddjb/lock_un.c
index 099716a..a029a7c 100644
--- a/src/libstddjb/lock_un.c
+++ b/src/libstddjb/lock_un.c
@@ -11,25 +11,22 @@
 
 int lock_un (int fd)
 {
-  register int r ;
-  do
-    r = flock(fd, LOCK_UN) ;
+  int r ;
+  do r = flock(fd, LOCK_UN) ;
   while ((r == -1) && (errno == EINTR)) ;
   return r ;
 }
 
 #else
 
-#include <sys/types.h>
 #include <unistd.h>
 #include <errno.h>
 #include <skalibs/djbunix.h>
 
 int lock_un (int fd)
 {
-  register int r ;
-  do
-    r = lockf(fd, F_ULOCK, 0) ;
+  int r ;
+  do r = lockf(fd, F_ULOCK, 0) ;
   while ((r == -1) && (errno == EINTR)) ;
   return r ;
 }
diff --git a/src/libstddjb/ltm64_from_localtm.c b/src/libstddjb/ltm64_from_localtm.c
index 6169f04..78e59a4 100644
--- a/src/libstddjb/ltm64_from_localtm.c
+++ b/src/libstddjb/ltm64_from_localtm.c
@@ -1,13 +1,12 @@
 /* ISC license. */
 
-#include <sys/types.h>
 #include <errno.h>
 #include <time.h>
-#include <skalibs/tai.h>
 #include <skalibs/uint64.h>
+#include <skalibs/tai.h>
 #include <skalibs/djbtime.h>
 
-int ltm64_from_localtm (uint64 *uu, struct tm const *l)
+int ltm64_from_localtm (uint64_t *uu, struct tm const *l)
 {
   struct tm ll = *l ;
   time_t u = mktime(&ll) ;
diff --git a/src/libstddjb/ltm64_from_sysclock.c b/src/libstddjb/ltm64_from_sysclock.c
index 54aca39..f169c59 100644
--- a/src/libstddjb/ltm64_from_sysclock.c
+++ b/src/libstddjb/ltm64_from_sysclock.c
@@ -8,15 +8,15 @@
 
 #include <skalibs/tai.h>
 
-int ltm64_from_sysclock (uint64 *u)
+int ltm64_from_sysclock (uint64_t *u)
 {
-  tai_t t = { *u + 10U } ;
+  tai_t t = { .x = *u + 10U } ;
   return ltm64_from_tai(u, &t) ;
 }
 
 #else
 
-int ltm64_from_sysclock (uint64 *u)
+int ltm64_from_sysclock (uint64_t *u)
 {
   return ltm64_from_utc(u) ;
 }
diff --git a/src/libstddjb/ltm64_from_tai.c b/src/libstddjb/ltm64_from_tai.c
index 9161a79..115c2cf 100644
--- a/src/libstddjb/ltm64_from_tai.c
+++ b/src/libstddjb/ltm64_from_tai.c
@@ -5,7 +5,7 @@
 #include <skalibs/djbtime.h>
 #include "djbtime-internal.h"
 
-int ltm64_from_tai (uint64 *u, tai_t const *t)
+int ltm64_from_tai (uint64_t *u, tai_t const *t)
 {
   switch (skalibs_tzisright())
   {
diff --git a/src/libstddjb/ltm64_from_utc.c b/src/libstddjb/ltm64_from_utc.c
index 7e08eb1..cc96841 100644
--- a/src/libstddjb/ltm64_from_utc.c
+++ b/src/libstddjb/ltm64_from_utc.c
@@ -4,7 +4,7 @@
 #include <skalibs/djbtime.h>
 #include "djbtime-internal.h"
 
-int ltm64_from_utc (uint64 *u)
+int ltm64_from_utc (uint64_t *u)
 {
   switch (skalibs_tzisright())
   {
diff --git a/src/libstddjb/mininetstring_read.c b/src/libstddjb/mininetstring_read.c
index f7c7a55..eaaaf99 100644
--- a/src/libstddjb/mininetstring_read.c
+++ b/src/libstddjb/mininetstring_read.c
@@ -1,12 +1,13 @@
 /* ISC license. */
 
+#include <sys/types.h>
+#include <stdint.h>
 #include <errno.h>
 #include <skalibs/allreadwrite.h>
-#include <skalibs/uint32.h>
 #include <skalibs/stralloc.h>
 #include <skalibs/mininetstring.h>
 
-int mininetstring_read (int fd, stralloc *sa, uint32 *w)
+int mininetstring_read (int fd, stralloc *sa, uint32_t *w)
 {
   if (!*w)
   {
@@ -15,8 +16,8 @@ int mininetstring_read (int fd, stralloc *sa, uint32 *w)
     {
       case -1 : return -1 ;
       case 0 : return 0 ;
-      case 1 : *w = ((uint32)pack[0] << 8) | (1U << 31) ; break ;
-      case 2 : *w = ((uint32)pack[0] << 8) | (uint32)pack[1] | (1U << 30) ; break ;
+      case 1 : *w = ((uint32_t)pack[0] << 8) | (1U << 31) ; break ;
+      case 2 : *w = ((uint32_t)pack[0] << 8) | (uint32_t)pack[1] | (1U << 30) ; break ;
       default : return (errno = EDOM, -1) ;
     }
   }
@@ -27,7 +28,7 @@ int mininetstring_read (int fd, stralloc *sa, uint32 *w)
     {
       case -1 : return -1 ;
       case 0 : return (errno = EPIPE, -1) ;
-      case 1 : *w |= (uint32)c | (1U << 30) ; *w &= ~(1U << 31) ; break ;
+      case 1 : *w |= (uint32_t)c | (1U << 30) ; *w &= ~(1U << 31) ; break ;
       default : return (errno = EDOM, -1) ;
     }
   }
@@ -37,7 +38,7 @@ int mininetstring_read (int fd, stralloc *sa, uint32 *w)
     *w &= ~(1U << 30) ;
   }
   {
-    register unsigned int r = allread(fd, sa->s + sa->len, *w) ;
+    size_t r = allread(fd, sa->s + sa->len, *w) ;
     sa->len += r ; *w -= r ;
   }
   return *w ? -1 : 1 ;
diff --git a/src/libstddjb/mininetstring_write.c b/src/libstddjb/mininetstring_write.c
index 5eddc7b..09833e2 100644
--- a/src/libstddjb/mininetstring_write.c
+++ b/src/libstddjb/mininetstring_write.c
@@ -1,12 +1,12 @@
 /* ISC license. */
 
+#include <stdint.h>
 #include <errno.h>
 #include <skalibs/uint16.h>
-#include <skalibs/uint32.h>
 #include <skalibs/allreadwrite.h>
 #include <skalibs/mininetstring.h>
 
-int mininetstring_write (int fd, char const *s, uint16 len, uint32 *w)
+int mininetstring_write (int fd, char const *s, uint16_t len, uint32_t *w)
 {
   if (!*w)
   {
diff --git a/src/libstddjb/netstring_append.c b/src/libstddjb/netstring_append.c
index 88098a4..8a10d64 100644
--- a/src/libstddjb/netstring_append.c
+++ b/src/libstddjb/netstring_append.c
@@ -1,8 +1,7 @@
 /* ISC license. */
 
-#include <sys/types.h>
+#include <string.h>
 #include <skalibs/uint64.h>
-#include <skalibs/bytestr.h>
 #include <skalibs/stralloc.h>
 #include <skalibs/netstring.h>
 
@@ -12,8 +11,8 @@ int netstring_appendb (stralloc *sa, char const *s, size_t len)
   size_t n = uint64_fmt(fmt, len) ;
   if (!stralloc_readyplus(sa, len + n + 2)) return 0 ;
   fmt[n] = ':' ;
-  byte_copy(sa->s + sa->len, n+1, fmt) ;
-  byte_copy(sa->s + sa->len + n+1, len, s) ;
+  memcpy(sa->s + sa->len, fmt, n+1) ;
+  memcpy(sa->s + sa->len + n+1, s, len) ;
   sa->s[sa->len + n+1 + len] = ',' ;
   sa->len += n + 2 + len ;
   return 1 ;
diff --git a/src/libstddjb/netstring_appendv.c b/src/libstddjb/netstring_appendv.c
index 1d9c290..652bd05 100644
--- a/src/libstddjb/netstring_appendv.c
+++ b/src/libstddjb/netstring_appendv.c
@@ -1,6 +1,6 @@
 /* ISC license. */
 
-#include <sys/types.h>
+#include <string.h>
 #include <skalibs/uint64.h>
 #include <skalibs/bytestr.h>
 #include <skalibs/siovec.h>
@@ -11,16 +11,16 @@ int netstring_appendv (stralloc *sa, struct iovec const *v, unsigned int n)
 {
   char fmt[UINT64_FMT] ;
   size_t len = 0, pos ;
-  register unsigned int i = 0 ;
+  unsigned int i = 0 ;
   for (; i < n ; i++) len += v[i].iov_len ;
   pos = uint64_fmt(fmt, len) ;
   if (!stralloc_readyplus(sa, len + pos + 2)) return 0 ;
   fmt[pos] = ':' ;
-  byte_copy(sa->s + sa->len, pos+1, fmt) ;
+  memcpy(sa->s + sa->len, fmt, pos+1) ;
   sa->len += pos+1 ;
   for (i = 0 ; i < n ; i++)
   {
-    byte_copy(sa->s + sa->len, v[i].iov_len, (char const *)v[i].iov_base) ;
+    memmove(sa->s + sa->len, v[i].iov_base, v[i].iov_len) ;
     sa->len += v[i].iov_len ;
   }
   sa->s[sa->len++] = ',' ;
diff --git a/src/libstddjb/netstring_decode.c b/src/libstddjb/netstring_decode.c
index d129ea8..68c68e1 100644
--- a/src/libstddjb/netstring_decode.c
+++ b/src/libstddjb/netstring_decode.c
@@ -3,13 +3,13 @@
 #include <sys/types.h>
 #include <errno.h>
 #include <skalibs/uint64.h>
-#include <skalibs/netstring.h>
 #include <skalibs/stralloc.h>
+#include <skalibs/netstring.h>
 
 ssize_t netstring_decode (stralloc *sa, char const *s, size_t len)
 {
   uint64_t nlen ;
-  register size_t pos ;
+  size_t pos ;
   if (!len) return 0 ;
   pos = uint64_scan(s, &nlen) ;
   if (pos >= len) return (errno = EINVAL, -1) ;
diff --git a/src/libstddjb/netstring_encode.c b/src/libstddjb/netstring_encode.c
index 6b2d0ea..786a4b1 100644
--- a/src/libstddjb/netstring_encode.c
+++ b/src/libstddjb/netstring_encode.c
@@ -1,6 +1,6 @@
 /* ISC license. */
 
-#include <sys/types.h>
+#include <string.h>
 #include <skalibs/uint64.h>
 #include <skalibs/netstring.h>
 #include <skalibs/stralloc.h>
diff --git a/src/libstddjb/netstring_put.c b/src/libstddjb/netstring_put.c
index 692d2fc..13aa7e0 100644
--- a/src/libstddjb/netstring_put.c
+++ b/src/libstddjb/netstring_put.c
@@ -15,21 +15,21 @@ int netstring_put (buffer *b, char const *s, size_t len, size_t *written)
   if (*written < n + 1)
   {
     size_t w = *written ;
-    ssize_t r = buffer_putall(b, fmt, n+1, &w) ;
+    int r = buffer_putall(b, fmt, n+1, &w) ;
     if (r < 0) return (*written = w, 0) ;
     *written = n+1 ;
   }
   if (*written < n+1 + len)
   {
     size_t w = *written - (n+1) ;
-    ssize_t r = buffer_putall(b, s, len, &w) ;
+    int r = buffer_putall(b, s, len, &w) ;
     *written = w + (n+1) ;
     if (r < 0) return (*written = n+1 + w, 0) ;
     *written = n+1 + len ;
   }
   {
     size_t w = 0 ;
-    ssize_t r = buffer_putall(b, ",", 1, &w) ;
+    int r = buffer_putall(b, ",", 1, &w) ;
     if (r < 0) return 0 ;
   }
   *written = 0 ;
diff --git a/src/libstddjb/ntp_from_tain.c b/src/libstddjb/ntp_from_tain.c
index 43d5a42..276a775 100644
--- a/src/libstddjb/ntp_from_tain.c
+++ b/src/libstddjb/ntp_from_tain.c
@@ -5,9 +5,9 @@
 #include <skalibs/tai.h>
 #include <skalibs/djbtime.h>
 
-int ntp_from_tain (uint64 *u, tain_t const *a)
+int ntp_from_tain (uint64_t *u, tain_t const *a)
 {
-  uint64 secs, frac ;
+  uint64_t secs, frac ;
   if (!utc_from_tai(&secs, tain_secp(a))) return 0 ;
   secs += NTP_OFFSET ;
   if (secs < TAI_MAGIC + 2147483648UL) goto ifail ;
diff --git a/src/libstddjb/open2.c b/src/libstddjb/open2.c
index 780f345..1d2682e 100644
--- a/src/libstddjb/open2.c
+++ b/src/libstddjb/open2.c
@@ -7,9 +7,8 @@
 
 int open2 (char const *s, unsigned int flags)
 {
-  register int r ;
-  do
-    r = open(s, (int)flags) ;
+  int r ;
+  do r = open(s, flags) ;
   while ((r == -1) && (errno == EINTR)) ;
   return r ;
 }
diff --git a/src/libstddjb/open3.c b/src/libstddjb/open3.c
index f990d63..f52b8cd 100644
--- a/src/libstddjb/open3.c
+++ b/src/libstddjb/open3.c
@@ -8,8 +8,7 @@
 int open3 (char const *s, unsigned int flags, unsigned int mode)
 {
   register int r ;
-  do
-    r = open(s, (int)flags, (mode_t)mode) ;
+  do r = open(s, flags, mode) ;
   while ((r == -1) && (errno == EINTR)) ;
   return r ;
 }
diff --git a/src/libstddjb/open_readb.c b/src/libstddjb/open_readb.c
index a8b0518..6fcede1 100644
--- a/src/libstddjb/open_readb.c
+++ b/src/libstddjb/open_readb.c
@@ -4,9 +4,9 @@
 
 int open_readb (char const *fn)
 {
-  register int fd = open_read(fn) ;
-  if (fd == -1) return -1 ;
-  if (ndelay_off(fd) == -1)
+  int fd = open_read(fn) ;
+  if (fd < 0) return -1 ;
+  if (ndelay_off(fd) < 0)
   {
     fd_close(fd) ;
     return -1 ;
diff --git a/src/libstddjb/pathexec0.c b/src/libstddjb/pathexec0.c
index 5241452..bfddfdf 100644
--- a/src/libstddjb/pathexec0.c
+++ b/src/libstddjb/pathexec0.c
@@ -1,7 +1,5 @@
 /* ISC license. */
 
-/* MT-unsafe */
-
 #include <unistd.h>
 #include <skalibs/djbunix.h>
 
diff --git a/src/libstddjb/pipe_internal.c b/src/libstddjb/pipe_internal.c
index d5354de..a1e8a8f 100644
--- a/src/libstddjb/pipe_internal.c
+++ b/src/libstddjb/pipe_internal.c
@@ -4,8 +4,13 @@
 
 #ifdef SKALIBS_HASPIPE2
 
+#ifndef _NETBSD_SOURCE
 #define _NETBSD_SOURCE
+#endif
+
+#ifndef _GNU_SOURCE
 #define _GNU_SOURCE
+#endif
 
 #include <unistd.h>
 #include <fcntl.h>
@@ -34,7 +39,7 @@ int pipe_internal (int *p, unsigned int flags)
   return 0 ;
  err:
   {
-    register int e = errno ;
+    int e = errno ;
     fd_close(pi[1]) ;
     fd_close(pi[0]) ;
     errno = e ;
diff --git a/src/libstddjb/prot_readgroups.c b/src/libstddjb/prot_readgroups.c
index 5559882..47cbfc7 100644
--- a/src/libstddjb/prot_readgroups.c
+++ b/src/libstddjb/prot_readgroups.c
@@ -5,7 +5,7 @@
 #include <sys/types.h>
 #include <grp.h>
 #include <errno.h>
-#include <skalibs/bytestr.h>
+#include <string.h>
 #include <skalibs/djbunix.h>
 
 int prot_readgroups (char const *name, gid_t *tab, unsigned int max)
@@ -14,15 +14,15 @@ int prot_readgroups (char const *name, gid_t *tab, unsigned int max)
   for (;;)
   {
     struct group *gr ;
-    register char **member ;
+    char **member ;
     errno = 0 ;
     if (n >= max) break ;
     gr = getgrent() ;
     if (!gr) break ;
     for (member = gr->gr_mem ; *member ; member++)
-      if (!str_diff(name, *member)) break ;
+      if (!strcmp(name, *member)) break ;
     if (*member) tab[n++] = gr->gr_gid ;
   }
   endgrent() ;
-  return errno ? -1 : (int)n ;
+  return errno ? -1 : n ;
 }
diff --git a/src/libstddjb/realpath.c b/src/libstddjb/realpath.c
deleted file mode 100644
index f286137..0000000
--- a/src/libstddjb/realpath.c
+++ /dev/null
@@ -1,11 +0,0 @@
-/* ISC license. */
-
-/* MT-unsafe */
-
-#include <skalibs/skamisc.h>
-#include <skalibs/djbunix.h>
-
-char *realpath (char const *name, char *buf)
-{
-  return realpath_tmp(name, buf, &satmp) ;
-}
diff --git a/src/libstddjb/realpath_tmp.c b/src/libstddjb/realpath_tmp.c
deleted file mode 100644
index 8f877dd..0000000
--- a/src/libstddjb/realpath_tmp.c
+++ /dev/null
@@ -1,26 +0,0 @@
-/* ISC license. */
-
-#include <limits.h>
-#include <errno.h>
-#include <skalibs/bytestr.h>
-#include <skalibs/stralloc.h>
-#include <skalibs/djbunix.h>
-
-#ifndef PATH_MAX
-# define PATH_MAX 4095
-#endif
-
-char *realpath_tmp (char const *name, char *buf, stralloc *tmp)
-{
-  unsigned int tmpbase = tmp->len ;
-  if (sarealpath(tmp, name) == -1) return (char *)0 ;
-  if (tmp->len - tmpbase > PATH_MAX)
-  {
-    tmp->len = tmpbase ;
-    return (errno = ENAMETOOLONG, (char *)0) ;
-  }
-  byte_copy(buf, tmp->len - tmpbase, tmp->s + tmpbase) ;
-  buf[tmp->len - tmpbase] = 0 ;
-  tmp->len = tmpbase ;
-  return buf ;
-}
diff --git a/src/libstddjb/sabasename.c b/src/libstddjb/sabasename.c
index 8d9b6fc..dff30a5 100644
--- a/src/libstddjb/sabasename.c
+++ b/src/libstddjb/sabasename.c
@@ -1,6 +1,6 @@
 /* ISC license. */
 
-#include <sys/types.h>
+#include <string.h>
 #include <skalibs/bytestr.h>
 #include <skalibs/stralloc.h>
 #include <skalibs/djbunix.h>
diff --git a/src/libstddjb/sadirname.c b/src/libstddjb/sadirname.c
index ac818e8..176f26a 100644
--- a/src/libstddjb/sadirname.c
+++ b/src/libstddjb/sadirname.c
@@ -1,6 +1,6 @@
 /* ISC license. */
 
-#include <sys/types.h>
+#include <string.h>
 #include <skalibs/bytestr.h>
 #include <skalibs/stralloc.h>
 #include <skalibs/djbunix.h>
diff --git a/src/libstddjb/sagetcwd.c b/src/libstddjb/sagetcwd.c
index d8c5dea..90f9aae 100644
--- a/src/libstddjb/sagetcwd.c
+++ b/src/libstddjb/sagetcwd.c
@@ -2,13 +2,13 @@
 
 #include <unistd.h>
 #include <errno.h>
-#include <skalibs/bytestr.h>
+#include <string.h>
 #include <skalibs/stralloc.h>
 #include <skalibs/djbunix.h>
 
 int sagetcwd (stralloc *sa)
 {
-  unsigned int n = 128 ;
+  size_t n = 128 ;
   int wasnull = !sa->s ;
 
   for (;;)
@@ -18,7 +18,7 @@ int sagetcwd (stralloc *sa)
     if (errno != ERANGE) goto err ;
     n += 128 ;
   }
-  sa->len += str_len(sa->s + sa->len) ;
+  sa->len += strlen(sa->s + sa->len) ;
   return 0 ;
 
 err:
diff --git a/src/libstddjb/sagethostname.c b/src/libstddjb/sagethostname.c
index 500a95c..b20db39 100644
--- a/src/libstddjb/sagethostname.c
+++ b/src/libstddjb/sagethostname.c
@@ -1,13 +1,13 @@
 /* ISC license. */
 
 #include <unistd.h>
-#include <skalibs/bytestr.h>
+#include <string.h>
 #include <skalibs/stralloc.h>
 #include <skalibs/djbunix.h>
 
 int sagethostname (stralloc *sa)
 {
-  unsigned int n = 128 ;
+  size_t n = 128 ;
   int wasnull = !sa->s ;
 
   for (;;)
@@ -18,7 +18,7 @@ int sagethostname (stralloc *sa)
     if (!sa->s[sa->len + n - 2]) break ;
     n += 128 ;
   }
-  sa->len += str_len(sa->s + sa->len) ;
+  sa->len += strlen(sa->s + sa->len) ;
   return 0 ;
 
 err:
diff --git a/src/libstddjb/sareadlink.c b/src/libstddjb/sareadlink.c
index d6c2a4e..90810e9 100644
--- a/src/libstddjb/sareadlink.c
+++ b/src/libstddjb/sareadlink.c
@@ -6,16 +6,16 @@
 
 int sareadlink (stralloc *sa, char const *path)
 {
-  unsigned int n = 128 ;
+  size_t n = 128 ;
   int wasnull = !sa->s ;
-  register int r ;
+  ssize_t r ;
 
   for (;;)
   {
     if (!stralloc_readyplus(sa, n)) goto err ;
     r = readlink(path, sa->s + sa->len, n) ;
     if (r < 0) goto err ;
-    if ((unsigned int)r < n) break ;
+    if ((size_t)r < n) break ;
     n += 128 ;
   }
   sa->len += r ;
diff --git a/src/libstddjb/sauniquename.c b/src/libstddjb/sauniquename.c
index ff102fa..c015dc3 100644
--- a/src/libstddjb/sauniquename.c
+++ b/src/libstddjb/sauniquename.c
@@ -9,17 +9,17 @@
 
 int sauniquename (stralloc *sa)
 {
-  unsigned int base = sa->len ;
+  size_t base = sa->len ;
   int wasnull = !sa->s ;
 
-  if (!stralloc_readyplus(sa, TIMESTAMP + UINT_FMT + 131)) return 0 ;
+  if (!stralloc_readyplus(sa, TIMESTAMP + PID_FMT + 131)) return 0 ;
   sa->s[base] = ':' ;
   timestamp(sa->s + base + 1) ;
   sa->s[base + 1 + TIMESTAMP] = ':' ;
   sa->len = base + 2 + TIMESTAMP ;
   sa->len += pid_fmt(sa->s + sa->len, getpid()) ;
   sa->s[sa->len++] = ':' ;
-  if (sagethostname(sa) == -1) goto err ;
+  if (sagethostname(sa) < 0) goto err ;
   return 1 ;
 
 err:
diff --git a/src/libstddjb/seek_cur.c b/src/libstddjb/seek_cur.c
deleted file mode 100644
index cdfdac7..0000000
--- a/src/libstddjb/seek_cur.c
+++ /dev/null
@@ -1,10 +0,0 @@
-/* ISC license. */
-
-#include <sys/types.h>
-#include <unistd.h>
-#include <skalibs/djbunix.h>
-
-long seek_cur (int fd)
-{
-  return (long)lseek(fd, 0, SEEK_CUR) ;
-}
diff --git a/src/libstddjb/seek_set.c b/src/libstddjb/seek_set.c
deleted file mode 100644
index 70f6b0d..0000000
--- a/src/libstddjb/seek_set.c
+++ /dev/null
@@ -1,10 +0,0 @@
-/* ISC license. */
-
-#include <sys/types.h>
-#include <unistd.h>
-#include <skalibs/djbunix.h>
-
-int seek_set (int fd, long pos)
-{
-  return lseek(fd, (off_t) pos, SEEK_SET) ;
-}
diff --git a/src/libstddjb/selfpipe_finish.c b/src/libstddjb/selfpipe_finish.c
index 47a889f..5d9b3fd 100644
--- a/src/libstddjb/selfpipe_finish.c
+++ b/src/libstddjb/selfpipe_finish.c
@@ -2,8 +2,8 @@
 
 /* MT-unsafe */
 
-#include <signal.h>
 #include <skalibs/sysdeps.h>
+#include <signal.h>
 #include <skalibs/djbunix.h>
 #include "selfpipe-internal.h"
 #include <skalibs/selfpipe.h>
diff --git a/src/libstddjb/selfpipe_read.c b/src/libstddjb/selfpipe_read.c
index b68e67d..b31c6bd 100644
--- a/src/libstddjb/selfpipe_read.c
+++ b/src/libstddjb/selfpipe_read.c
@@ -3,6 +3,7 @@
 /* MT-unsafe */
 
 #include <skalibs/sysdeps.h>
+#include <sys/types.h>
 #include <skalibs/allreadwrite.h>
 #include "selfpipe-internal.h"
 #include <skalibs/selfpipe.h>
@@ -14,7 +15,7 @@
 int selfpipe_read (void)
 {
   struct signalfd_siginfo buf ;
-  register int r = sanitize_read(fd_read(selfpipe_fd, (char *)&buf, sizeof(struct signalfd_siginfo))) ;
+  ssize_t r = sanitize_read(fd_read(selfpipe_fd, (char *)&buf, sizeof(struct signalfd_siginfo))) ;
   return (r <= 0) ? r : (int)buf.ssi_signo ;
 }
       
@@ -23,7 +24,7 @@ int selfpipe_read (void)
 int selfpipe_read (void)
 {
   char c ;
-  register int r = sanitize_read((fd_read(selfpipe_fd, &c, 1))) ;
+  ssize_t r = sanitize_read((fd_read(selfpipe_fd, &c, 1))) ;
   return (r <= 0) ? r : (int)c ;
 }
 
diff --git a/src/libstddjb/selfpipe_trapset.c b/src/libstddjb/selfpipe_trapset.c
index f8c35ee..ed09b50 100644
--- a/src/libstddjb/selfpipe_trapset.c
+++ b/src/libstddjb/selfpipe_trapset.c
@@ -39,7 +39,7 @@ int selfpipe_trapset (sigset_t const *set)
   if (selfpipe_fd < 0) return (errno = EBADF, -1) ;
   for (; i <= NSIG ; i++)
   {
-    register int h = sigismember(set, i) ;
+    int h = sigismember(set, i) ;
     if (h < 0) continue ;
     if (h)
     {
diff --git a/src/libstddjb/selfpipe_untrap.c b/src/libstddjb/selfpipe_untrap.c
index 776f2d7..7d82cf4 100644
--- a/src/libstddjb/selfpipe_untrap.c
+++ b/src/libstddjb/selfpipe_untrap.c
@@ -16,7 +16,7 @@ int selfpipe_untrap (int sig)
 {
   sigset_t ss = selfpipe_caught ;
   sigset_t blah ;
-  register int r = sigismember(&selfpipe_caught, sig) ;
+  int r = sigismember(&selfpipe_caught, sig) ;
   if (selfpipe_fd < 0) return (errno = EBADF, -1) ;
   if (r < 0) return -1 ;
   if (!r) return (errno = EINVAL, -1) ;
@@ -42,7 +42,7 @@ int selfpipe_untrap (int sig)
 
 int selfpipe_untrap (int sig)
 {
-  register int r = sigismember(&selfpipe_caught, sig) ;
+  int r = sigismember(&selfpipe_caught, sig) ;
   if (selfpipe_fd < 0) return (errno = EBADF, -1) ;
   if (r < 0) return -1 ;
   if (!r) return (errno = EINVAL, -1) ;
diff --git a/src/libstddjb/sig_number.c b/src/libstddjb/sig_number.c
index cbd897d..a588abd 100644
--- a/src/libstddjb/sig_number.c
+++ b/src/libstddjb/sig_number.c
@@ -1,12 +1,12 @@
 /* ISC license. */
 
-#include <skalibs/bytestr.h>
+#include <strings.h>
 #include <skalibs/sig.h>
 #include "sig-internal.h"
 
 int sig_number (char const *name)
 {
-  register sigtable_t const *p = skalibs_sigtable ;
-  for (; p->name ; p++) if (!case_diffs(name, p->name)) break ;
+  sigtable_t const *p = skalibs_sigtable ;
+  for (; p->name ; p++) if (!strcasecmp(name, p->name)) break ;
   return p->number ;
 }
diff --git a/src/libstddjb/sig_restoreto.c b/src/libstddjb/sig_restoreto.c
index 523b14a..580ba32 100644
--- a/src/libstddjb/sig_restoreto.c
+++ b/src/libstddjb/sig_restoreto.c
@@ -7,10 +7,10 @@
 
 void sig_restoreto (sigset_t const *set, unsigned int n)
 {
-  register unsigned int i = 1 ;
+  unsigned int i = 1 ;
   for (; i <= n ; i++)
   {
-    register int h = sigismember(set, i) ;
+    int h = sigismember(set, i) ;
     if (h < 0) continue ;
     if (h) sig_restore(i) ;
   }
diff --git a/src/libstddjb/siovec_bytechr.c b/src/libstddjb/siovec_bytechr.c
index 8c7e78c..295b949 100644
--- a/src/libstddjb/siovec_bytechr.c
+++ b/src/libstddjb/siovec_bytechr.c
@@ -1,6 +1,5 @@
 /* ISC license. */
 
-#include <sys/types.h>
 #include <sys/uio.h>
 #include <skalibs/bytestr.h>
 #include <skalibs/siovec.h>
diff --git a/src/libstddjb/siovec_bytein.c b/src/libstddjb/siovec_bytein.c
index bcf6e59..1d4200b 100644
--- a/src/libstddjb/siovec_bytein.c
+++ b/src/libstddjb/siovec_bytein.c
@@ -1,6 +1,5 @@
 /* ISC license. */
 
-#include <sys/types.h>
 #include <sys/uio.h>
 #include <skalibs/bytestr.h>
 #include <skalibs/siovec.h>
diff --git a/src/libstddjb/siovec_deal.c b/src/libstddjb/siovec_deal.c
index 3f802b9..9333358 100644
--- a/src/libstddjb/siovec_deal.c
+++ b/src/libstddjb/siovec_deal.c
@@ -1,6 +1,5 @@
 /* ISC license. */
 
-#include <sys/types.h>
 #include <sys/uio.h>
 #include <string.h>
 #include <skalibs/siovec.h>
diff --git a/src/libstddjb/siovec_gather.c b/src/libstddjb/siovec_gather.c
index b5fcbb7..c4138b6 100644
--- a/src/libstddjb/siovec_gather.c
+++ b/src/libstddjb/siovec_gather.c
@@ -1,6 +1,5 @@
 /* ISC license. */
 
-#include <sys/types.h>
 #include <sys/uio.h>
 #include <string.h>
 #include <skalibs/siovec.h>
diff --git a/src/libstddjb/siovec_len.c b/src/libstddjb/siovec_len.c
index 5465fd7..2f4f556 100644
--- a/src/libstddjb/siovec_len.c
+++ b/src/libstddjb/siovec_len.c
@@ -1,6 +1,5 @@
 /* ISC license. */
 
-#include <sys/types.h>
 #include <sys/uio.h>
 #include <skalibs/siovec.h>
 
diff --git a/src/libstddjb/siovec_scatter.c b/src/libstddjb/siovec_scatter.c
index 3a583f3..d5ff1b2 100644
--- a/src/libstddjb/siovec_scatter.c
+++ b/src/libstddjb/siovec_scatter.c
@@ -1,6 +1,5 @@
 /* ISC license. */
 
-#include <sys/types.h>
 #include <sys/uio.h>
 #include <string.h>
 #include <skalibs/siovec.h>
diff --git a/src/libstddjb/siovec_seek.c b/src/libstddjb/siovec_seek.c
index f03b20a..44f8279 100644
--- a/src/libstddjb/siovec_seek.c
+++ b/src/libstddjb/siovec_seek.c
@@ -1,6 +1,5 @@
 /* ISC license. */
 
-#include <sys/types.h>
 #include <sys/uio.h>
 #include <skalibs/bytestr.h>
 #include <skalibs/siovec.h>
@@ -8,7 +7,7 @@
 size_t siovec_seek (struct iovec *v, unsigned int n, size_t len)
 {
   size_t w = 0 ;
-  register unsigned int i = 0 ;
+  unsigned int i = 0 ;
   for (; i < n ; i++)
   {
     if (len < v[i].iov_len) break ;
diff --git a/src/libstddjb/siovec_trunc.c b/src/libstddjb/siovec_trunc.c
index ca40922..d71f9d9 100644
--- a/src/libstddjb/siovec_trunc.c
+++ b/src/libstddjb/siovec_trunc.c
@@ -1,6 +1,5 @@
 /* ISC license. */
 
-#include <sys/types.h>
 #include <sys/uio.h>
 #include <skalibs/siovec.h>
 
diff --git a/src/libstddjb/skagetln_nofill.c b/src/libstddjb/skagetln_nofill.c
index ce28921..cbb4a31 100644
--- a/src/libstddjb/skagetln_nofill.c
+++ b/src/libstddjb/skagetln_nofill.c
@@ -1,6 +1,5 @@
 /* ISC license. */
 
-#include <sys/types.h>
 #include <sys/uio.h>
 #include <skalibs/buffer.h>
 #include <skalibs/siovec.h>
diff --git a/src/libstddjb/skagetlnsep.c b/src/libstddjb/skagetlnsep.c
index f9813f3..dc6d520 100644
--- a/src/libstddjb/skagetlnsep.c
+++ b/src/libstddjb/skagetlnsep.c
@@ -1,6 +1,5 @@
 /* ISC license. */
 
-#include <sys/types.h>
 #include <sys/uio.h>
 #include <errno.h>
 #include <skalibs/buffer.h>
diff --git a/src/libstddjb/skalibs_tzisright.c b/src/libstddjb/skalibs_tzisright.c
index f8414a6..ed24cc1 100644
--- a/src/libstddjb/skalibs_tzisright.c
+++ b/src/libstddjb/skalibs_tzisright.c
@@ -1,6 +1,5 @@
 /* ISC license. */
 
-#include <sys/types.h>
 #include <time.h>
 #include "djbtime-internal.h"
 
diff --git a/src/libstddjb/skasigaction.c b/src/libstddjb/skasigaction.c
index bb55642..4b1ea8b 100644
--- a/src/libstddjb/skasigaction.c
+++ b/src/libstddjb/skasigaction.c
@@ -12,7 +12,7 @@ int skasigaction (int sig, struct skasigaction const *new, struct skasigaction *
   if (sigaction(sig, &sanew, &saold) < 0) return -1 ;
   if (old)
   {
-    register int r = sigismember(&saold.sa_mask, (sig == SIGTERM) ? SIGPIPE : SIGTERM) ;
+    int r = sigismember(&saold.sa_mask, (sig == SIGTERM) ? SIGPIPE : SIGTERM) ;
     if (r < 0) return -1 ;
     old->flags = 0 ;
     if (r) old->flags |= SKASA_MASKALL ;
diff --git a/src/libstddjb/slurp.c b/src/libstddjb/slurp.c
index 553b29e..d5b3b43 100644
--- a/src/libstddjb/slurp.c
+++ b/src/libstddjb/slurp.c
@@ -1,5 +1,6 @@
 /* ISC license. */
 
+#include <sys/types.h>
 #include <skalibs/allreadwrite.h>
 #include <skalibs/stralloc.h>
 #include <skalibs/djbunix.h>
@@ -8,10 +9,11 @@
 
 int slurp (stralloc *sa, int fd)
 {
-  register unsigned int salen = sa->len ;
+  size_t salen = sa->len ;
+  int wasnull = !sa->s ;
   for (;;)
   {
-    int r ;
+    ssize_t r ;
     if (!stralloc_readyplus(sa, N)) break ;
     r = fd_read(fd, sa->s + sa->len, N) ;
     switch (r)
@@ -25,7 +27,11 @@ int slurp (stralloc *sa, int fd)
     }
   }
 err:
-  sa->len = salen ;
-  stralloc_shrink(sa) ;
+  if (wasnull) stralloc_free(sa) ;
+  else
+  {
+    sa->len = salen ;
+    stralloc_shrink(sa) ;
+  }
   return 0 ;
 }
diff --git a/src/libstddjb/socket_accept4.c b/src/libstddjb/socket_accept4.c
index e504375..a50ade0 100644
--- a/src/libstddjb/socket_accept4.c
+++ b/src/libstddjb/socket_accept4.c
@@ -4,17 +4,18 @@
 #include <skalibs/nonposix.h>
 #include <sys/socket.h>
 #include <netinet/in.h>
+#include <stdint.h>
+#include <string.h>
 #include <errno.h>
 #include <skalibs/uint16.h>
-#include <skalibs/bytestr.h>
 #include <skalibs/djbunix.h>
 #include <skalibs/socket.h>
 
-int socket_accept4_internal (int s, char *ip, uint16 *port, unsigned int options)
+int socket_accept4_internal (int s, char *ip, uint16_t *port, unsigned int options)
 {
   struct sockaddr_in sa ;
   socklen_t dummy = sizeof sa ;
-  register int fd ;
+  int fd ;
   do
 #ifdef SKALIBS_HASACCEPT4
     fd = accept4(s, (struct sockaddr *)&sa, &dummy, ((options & DJBUNIX_FLAG_NB) ? SOCK_NONBLOCK : 0) | ((options & DJBUNIX_FLAG_COE) ? SOCK_CLOEXEC : 0)) ;
@@ -27,13 +28,13 @@ int socket_accept4_internal (int s, char *ip, uint16 *port, unsigned int options
   if ((((options & DJBUNIX_FLAG_NB) ? ndelay_on(fd) : ndelay_off(fd)) < 0)
    || (((options & DJBUNIX_FLAG_COE) ? coe(fd) : uncoe(fd)) < 0))
   {
-    register int e = errno ;
+    int e = errno ;
     fd_close(fd) ;
     errno = e ;
     return -1 ;
   }
 #endif
-  byte_copy(ip, 4, (char *)&sa.sin_addr.s_addr) ;
+  memcpy(ip, &sa.sin_addr.s_addr, 4) ;
   uint16_unpack_big((char *)&sa.sin_port, port) ;
   return fd ;
 }
diff --git a/src/libstddjb/socket_accept4_u32.c b/src/libstddjb/socket_accept4_u32.c
index 18455fc..1817ec3 100644
--- a/src/libstddjb/socket_accept4_u32.c
+++ b/src/libstddjb/socket_accept4_u32.c
@@ -1,13 +1,13 @@
 /* ISC license. */
 
-#include <skalibs/uint16.h>
+#include <stdint.h>
 #include <skalibs/uint32.h>
 #include <skalibs/socket.h>
 
-int socket_accept4_internal_u32 (int s, uint32 *ip, uint16 *port, unsigned int options)
+int socket_accept4_internal_u32 (int s, uint32_t *ip, uint16_t *port, unsigned int options)
 {
   char pack[4] ;
-  register int r = socket_accept4_internal(s, pack, port, options) ;
-  if (r >= 0) uint32_unpack_big(pack, ip) ;
-  return r ;
+  int fd = socket_accept4_internal(s, pack, port, options) ;
+  if (fd >= 0) uint32_unpack_big(pack, ip) ;
+  return fd ;
 }
diff --git a/src/libstddjb/socket_accept6.c b/src/libstddjb/socket_accept6.c
index f52efbb..ff11bce 100644
--- a/src/libstddjb/socket_accept6.c
+++ b/src/libstddjb/socket_accept6.c
@@ -4,20 +4,21 @@
 #include <skalibs/nonposix.h>
 #include <sys/socket.h>
 #include <netinet/in.h>
+#include <string.h>
+#include <stdint.h>
 #include <errno.h>
 #include <skalibs/uint16.h>
-#include <skalibs/bytestr.h>
 #include <skalibs/djbunix.h>
 #include <skalibs/ip46.h>
 #include <skalibs/socket.h>
 
 #ifdef SKALIBS_IPV6_ENABLED
 
-int socket_accept6_internal (int s, char *ip6, uint16 *port, unsigned int options)
+int socket_accept6_internal (int s, char *ip6, uint16_t *port, unsigned int options)
 {
   struct sockaddr_in6 sa ;
   socklen_t dummy = sizeof sa ;
-  register int fd ;
+  int fd ;
   do
 #ifdef SKALIBS_HASACCEPT4
     fd = accept4(s, (struct sockaddr *)&sa, &dummy, ((options & DJBUNIX_FLAG_NB) ? SOCK_NONBLOCK : 0) | ((options & DJBUNIX_FLAG_COE) ? SOCK_CLOEXEC : 0)) ;
@@ -30,20 +31,20 @@ int socket_accept6_internal (int s, char *ip6, uint16 *port, unsigned int option
   if ((((options & DJBUNIX_FLAG_NB) ? ndelay_on(fd) : ndelay_off(fd)) < 0)
    || (((options & DJBUNIX_FLAG_COE) ? coe(fd) : uncoe(fd)) < 0))
   {
-    register int e = errno ;
+    int e = errno ;
     fd_close(fd) ;
     errno = e ;
     return -1 ;
   }
 #endif
-  byte_copy(ip6, 16, (char const *)sa.sin6_addr.s6_addr) ;
+  memcpy(ip6, sa.sin6_addr.s6_addr, 16) ;
   uint16_unpack_big((char *)&sa.sin6_port, port) ;
   return fd ;
 }
 
 #else
 
-int socket_accept6_internal (int s, char *ip6, uint16 *port, unsigned int options)
+int socket_accept6_internal (int s, char *ip6, uint16_t *port, unsigned int options)
 {
   (void)s ;
   (void)ip6 ;
diff --git a/src/libstddjb/socket_bind4.c b/src/libstddjb/socket_bind4.c
index 1078fbc..6700b1e 100644
--- a/src/libstddjb/socket_bind4.c
+++ b/src/libstddjb/socket_bind4.c
@@ -2,18 +2,19 @@
 
 #include <skalibs/nonposix.h>
 #include <sys/socket.h>
+#include <stdint.h>
+#include <string.h>
 #include <netinet/in.h>
 #include <skalibs/uint16.h>
-#include <skalibs/bytestr.h>
 #include <skalibs/socket.h>
 
-int socket_bind4 (int s, char const *ip, uint16 port)
+int socket_bind4 (int s, char const *ip, uint16_t port)
 {
   struct sockaddr_in sa ;
-  byte_zero(&sa, sizeof sa) ;
+  memset(&sa, 0, sizeof sa) ;
   sa.sin_family = AF_INET ;
   uint16_big_endian((char *)&port, 1) ;
   sa.sin_port = port ;
-  byte_copy((char *)&sa.sin_addr.s_addr, 4, ip) ;
+  memcpy(&sa.sin_addr.s_addr, ip, 4) ;
   return bind(s, (struct sockaddr *)&sa, sizeof sa) ;
 }
diff --git a/src/libstddjb/socket_bind4r.c b/src/libstddjb/socket_bind4r.c
index 55f0903..2c43d9a 100644
--- a/src/libstddjb/socket_bind4r.c
+++ b/src/libstddjb/socket_bind4r.c
@@ -2,12 +2,12 @@
 
 #include <skalibs/nonposix.h>
 #include <sys/socket.h>
-#include <skalibs/uint16.h>
+#include <stdint.h>
 #include <skalibs/socket.h>
 
-int socket_bind4_reuse (int s, char const *ip, uint16 port)
+int socket_bind4_reuse (int s, char const *ip, uint16_t port)
 {
-  unsigned int opt = 1 ;
+  static unsigned int const opt = 1 ;
   setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof opt) ;
   return socket_bind4(s, ip, port) ;
 }
diff --git a/src/libstddjb/socket_bind6.c b/src/libstddjb/socket_bind6.c
index 63fa412..e6c08fe 100644
--- a/src/libstddjb/socket_bind6.c
+++ b/src/libstddjb/socket_bind6.c
@@ -4,26 +4,27 @@
 #include <errno.h>
 #include <sys/socket.h>
 #include <netinet/in.h>
+#include <stdint.h>
+#include <string.h>
 #include <skalibs/uint16.h>
-#include <skalibs/bytestr.h>
 #include <skalibs/socket.h>
 #include <skalibs/ip46.h>
 
 #ifdef SKALIBS_IPV6_ENABLED
 
-int socket_bind6 (int s, char const *ip6, uint16 port)
+int socket_bind6 (int s, char const *ip6, uint16_t port)
 {
   struct sockaddr_in6 sa ;
-  byte_zero(&sa, sizeof sa) ;
+  memset(&sa, 0, sizeof sa) ;
   sa.sin6_family = AF_INET6 ;
   uint16_pack_big((char *)&sa.sin6_port, port) ;
-  byte_copy((char *)sa.sin6_addr.s6_addr, 16, ip6) ;
+  memcpy(sa.sin6_addr.s6_addr, ip6, 16) ;
   return bind(s, (struct sockaddr *)&sa, sizeof sa) ;
 }
 
 #else
 
-int socket_bind6 (int s, char const *ip6, uint16 port)
+int socket_bind6 (int s, char const *ip6, uint16_t port)
 {
   (void)s ;
   (void)ip6 ;
diff --git a/src/libstddjb/socket_bind6r.c b/src/libstddjb/socket_bind6r.c
index 6bf5e0d..de24c61 100644
--- a/src/libstddjb/socket_bind6r.c
+++ b/src/libstddjb/socket_bind6r.c
@@ -2,12 +2,12 @@
 
 #include <skalibs/nonposix.h>
 #include <sys/socket.h>
-#include <skalibs/uint16.h>
+#include <stdint.h>
 #include <skalibs/socket.h>
 
-int socket_bind6_reuse (int s, char const *ip6, uint16 port)
+int socket_bind6_reuse (int s, char const *ip6, uint16_t port)
 {
-  unsigned int opt = 1 ;
+  static unsigned int const opt = 1 ;
   setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof opt) ;
   return socket_bind6(s, ip6, port) ;
 }
diff --git a/src/libstddjb/socket_conn4.c b/src/libstddjb/socket_conn4.c
index 12459a8..78a10b9 100644
--- a/src/libstddjb/socket_conn4.c
+++ b/src/libstddjb/socket_conn4.c
@@ -3,20 +3,21 @@
 #include <skalibs/nonposix.h>
 #include <sys/socket.h>
 #include <netinet/in.h>
+#include <stdint.h>
+#include <string.h>
 #include <errno.h>
 #include <skalibs/uint16.h>
-#include <skalibs/bytestr.h>
 #include <skalibs/socket.h>
 
-int socket_connect4 (int s, char const *ip, uint16 port)
+int socket_connect4 (int s, char const *ip, uint16_t port)
 {
   struct sockaddr_in sa ;
-  register int r ;
-  byte_zero(&sa, sizeof sa) ;
+  int r ;
+  memset(&sa, 0, sizeof sa) ;
   sa.sin_family = AF_INET ;
   uint16_big_endian((char *)&port, 1) ;
   sa.sin_port = port ;
-  byte_copy((char *)&sa.sin_addr.s_addr, 4, ip) ;
+  memcpy(&sa.sin_addr.s_addr, ip, 4) ;
   do r = connect(s, (struct sockaddr *)&sa, sizeof sa) ;
   while ((r == -1) && (errno == EINTR)) ;
   if ((r == -1) && (errno == EALREADY)) errno = EINPROGRESS ;
diff --git a/src/libstddjb/socket_conn4_u32.c b/src/libstddjb/socket_conn4_u32.c
index 20887ce..162bf72 100644
--- a/src/libstddjb/socket_conn4_u32.c
+++ b/src/libstddjb/socket_conn4_u32.c
@@ -1,10 +1,10 @@
 /* ISC license. */
 
-#include <skalibs/uint16.h>
+#include <stdint.h>
 #include <skalibs/uint32.h>
 #include <skalibs/socket.h>
 
-int socket_connect4_u32 (int s, uint32 ip, uint16 port)
+int socket_connect4_u32 (int s, uint32_t ip, uint16_t port)
 {
   char pack[4] ;
   uint32_pack_big(pack, ip) ;
diff --git a/src/libstddjb/socket_conn6.c b/src/libstddjb/socket_conn6.c
index 57bb3f8..9b0316b 100644
--- a/src/libstddjb/socket_conn6.c
+++ b/src/libstddjb/socket_conn6.c
@@ -3,22 +3,23 @@
 #include <skalibs/nonposix.h>
 #include <sys/socket.h>
 #include <netinet/in.h>
+#include <stdint.h>
+#include <string.h>
 #include <errno.h>
 #include <skalibs/uint16.h>
-#include <skalibs/bytestr.h>
 #include <skalibs/socket.h>
 #include <skalibs/ip46.h>
 
 #ifdef SKALIBS_IPV6_ENABLED
 
-int socket_connect6 (int s, char const *ip6, uint16 port)
+int socket_connect6 (int s, char const *ip6, uint16_t port)
 {
   struct sockaddr_in6 sa ;
-  register int r ;
-  byte_zero(&sa, sizeof sa) ;
+  int r ;
+  memset(&sa, 0, sizeof sa) ;
   sa.sin6_family = AF_INET6 ;
   uint16_pack_big((char *)&sa.sin6_port,port) ;
-  byte_copy((char *)sa.sin6_addr.s6_addr, 16, ip6) ;
+  memcpy(sa.sin6_addr.s6_addr, ip6, 16) ;
   do r = connect(s, (struct sockaddr *)&sa, sizeof sa) ;
   while ((r == -1) && (errno == EINTR)) ;
   if ((r == -1) && (errno == EALREADY)) errno = EINPROGRESS ;
@@ -27,7 +28,7 @@ int socket_connect6 (int s, char const *ip6, uint16 port)
 
 #else
 
-int socket_connect6 (int s, char const *ip6, uint16 port)
+int socket_connect6 (int s, char const *ip6, uint16_t port)
 {
   (void)s ;
   (void)ip6 ;
diff --git a/src/libstddjb/socket_connected.c b/src/libstddjb/socket_connected.c
index 895eaf3..58ca463 100644
--- a/src/libstddjb/socket_connected.c
+++ b/src/libstddjb/socket_connected.c
@@ -13,7 +13,7 @@ int socket_connected (int s)
   if (getpeername(s, (struct sockaddr *)&sa, &dummy) == -1)
   {
     char ch ;
-    fd_read(s, &ch, 1) ; /* sets errno */
+    fd_read(s, &ch, 1) ;
     return 0 ;
   }
   return 1 ;
diff --git a/src/libstddjb/socket_deadlineconnstamp4.c b/src/libstddjb/socket_deadlineconnstamp4.c
index 618852f..a57718d 100644
--- a/src/libstddjb/socket_deadlineconnstamp4.c
+++ b/src/libstddjb/socket_deadlineconnstamp4.c
@@ -1,12 +1,12 @@
 /* ISC license. */
 
 #include <errno.h>
-#include <skalibs/uint16.h>
+#include <stdint.h>
 #include <skalibs/error.h>
 #include <skalibs/tai.h>
 #include <skalibs/socket.h>
 
-int socket_deadlineconnstamp (int s, char const *ip, uint16 port, tain_t const *deadline, tain_t *stamp)
+int socket_deadlineconnstamp (int s, char const *ip, uint16_t port, tain_t const *deadline, tain_t *stamp)
 {
   if (socket_connect4(s, ip, port) >= 0) return 1 ;
   if (!error_isagain(errno) && !error_isalready(errno)) return 0 ;
diff --git a/src/libstddjb/socket_deadlineconnstamp46.c b/src/libstddjb/socket_deadlineconnstamp46.c
index 4ab2c9a..774e840 100644
--- a/src/libstddjb/socket_deadlineconnstamp46.c
+++ b/src/libstddjb/socket_deadlineconnstamp46.c
@@ -1,13 +1,13 @@
 /* ISC license. */
 
 #include <errno.h>
-#include <skalibs/uint16.h>
+#include <stdint.h>
 #include <skalibs/error.h>
 #include <skalibs/tai.h>
 #include <skalibs/socket.h>
 #include <skalibs/ip46.h>
 
-int socket_deadlineconnstamp46 (int s, ip46_t const *i, uint16 port, tain_t const *deadline, tain_t *stamp)
+int socket_deadlineconnstamp46 (int s, ip46_t const *i, uint16_t port, tain_t const *deadline, tain_t *stamp)
 {
   if (socket_connect46(s, i, port) >= 0) return 1 ;
   if (!error_isagain(errno) && !error_isalready(errno)) return 0 ;
diff --git a/src/libstddjb/socket_deadlineconnstamp4_u32.c b/src/libstddjb/socket_deadlineconnstamp4_u32.c
index 4a82e50..296f26d 100644
--- a/src/libstddjb/socket_deadlineconnstamp4_u32.c
+++ b/src/libstddjb/socket_deadlineconnstamp4_u32.c
@@ -1,11 +1,11 @@
 /* ISC license. */
 
-#include <skalibs/uint16.h>
+#include <stdint.h>
 #include <skalibs/uint32.h>
 #include <skalibs/tai.h>
 #include <skalibs/socket.h>
 
-int socket_deadlineconnstamp4_u32 (int s, uint32 ip, uint16 port, tain_t const *deadline, tain_t *stamp)
+int socket_deadlineconnstamp4_u32 (int s, uint32_t ip, uint16_t port, tain_t const *deadline, tain_t *stamp)
 {
   char pack[4] ;
   uint32_pack_big(pack, ip) ;
diff --git a/src/libstddjb/socket_deadlineconnstamp6.c b/src/libstddjb/socket_deadlineconnstamp6.c
index a797d1e..7d7bcab 100644
--- a/src/libstddjb/socket_deadlineconnstamp6.c
+++ b/src/libstddjb/socket_deadlineconnstamp6.c
@@ -1,12 +1,12 @@
 /* ISC license. */
 
 #include <errno.h>
-#include <skalibs/uint16.h>
+#include <stdint.h>
 #include <skalibs/error.h>
 #include <skalibs/tai.h>
 #include <skalibs/socket.h>
 
-int socket_deadlineconnstamp6 (int s, char const *ip, uint16 port, tain_t const *deadline, tain_t *stamp)
+int socket_deadlineconnstamp6 (int s, char const *ip, uint16_t port, tain_t const *deadline, tain_t *stamp)
 {
   if (socket_connect6(s, ip, port) >= 0) return 1 ;
   if (!error_isagain(errno) && !error_isalready(errno)) return 0 ;
diff --git a/src/libstddjb/socket_internal.c b/src/libstddjb/socket_internal.c
index ae57e06..f8b0a1f 100644
--- a/src/libstddjb/socket_internal.c
+++ b/src/libstddjb/socket_internal.c
@@ -22,7 +22,7 @@ int socket_internal (int domain, int type, int protocol, unsigned int flags)
   if ((((flags & DJBUNIX_FLAG_NB) ? ndelay_on(s) : ndelay_off(s)) < 0)
    || (((flags & DJBUNIX_FLAG_COE) ? coe(s) : uncoe(s)) < 0))
   {
-    register int e = errno ;
+    int e = errno ;
     fd_close(s) ;
     errno = e ;
     return -1 ;
diff --git a/src/libstddjb/socket_ioloop.c b/src/libstddjb/socket_ioloop.c
index a158f01..0a3a5ae 100644
--- a/src/libstddjb/socket_ioloop.c
+++ b/src/libstddjb/socket_ioloop.c
@@ -1,18 +1,19 @@
 /* ISC license. */
 
+#include <sys/types.h>
+#include <stdint.h>
 #include <errno.h>
 #include <skalibs/error.h>
-#include <skalibs/uint16.h>
 #include <skalibs/tai.h>
 #include <skalibs/iopause.h>
 #include <skalibs/socket.h>
 
-int socket_ioloop (int s, char *buf, unsigned int len, char *ip, uint16 *port, socket_io_func_t_ref f, int w, tain_t const *deadline, tain_t *stamp)
+ssize_t socket_ioloop (int s, char *buf, size_t len, char *ip, uint16_t *port, socket_io_func_t_ref f, int w, tain_t const *deadline, tain_t *stamp)
 {
   iopause_fd x = { .fd = s, .events = w ? IOPAUSE_WRITE : IOPAUSE_READ, .revents = 0 } ;
   for (;;)
   {
-    register int r = iopause_stamp(&x, 1, deadline, stamp) ;
+    ssize_t r = iopause_stamp(&x, 1, deadline, stamp) ;
     if (r < 0) return -1 ;
     if (!r) return (errno = ETIMEDOUT, -1) ;
     if (x.revents & IOPAUSE_EXCEPT) return (errno = EIO, -1) ;
diff --git a/src/libstddjb/socket_ioloop_send4.c b/src/libstddjb/socket_ioloop_send4.c
index aff251d..94eb311 100644
--- a/src/libstddjb/socket_ioloop_send4.c
+++ b/src/libstddjb/socket_ioloop_send4.c
@@ -1,8 +1,10 @@
 /* ISC license. */
 
+#include <sys/types.h>
+#include <stdint.h>
 #include <skalibs/socket.h>
 
-int socket_ioloop_send4 (int fd, char *s, unsigned int len, char *ip, uint16 *port)
+ssize_t socket_ioloop_send4 (int fd, char *s, size_t len, char *ip, uint16_t *port)
 {
   return socket_send4(fd, s, len, ip, *port) ;
 }
diff --git a/src/libstddjb/socket_ioloop_send6.c b/src/libstddjb/socket_ioloop_send6.c
index 151a58c..f201437 100644
--- a/src/libstddjb/socket_ioloop_send6.c
+++ b/src/libstddjb/socket_ioloop_send6.c
@@ -1,8 +1,10 @@
 /* ISC license. */
 
+#include <sys/types.h>
+#include <stdint.h>
 #include <skalibs/socket.h>
 
-int socket_ioloop_send6 (int fd, char *s, unsigned int len, char *ip, uint16 *port)
+ssize_t socket_ioloop_send6 (int fd, char *s, size_t len, char *ip, uint16_t *port)
 {
   return socket_send6(fd, s, len, ip, *port) ;
 }
diff --git a/src/libstddjb/socket_local4.c b/src/libstddjb/socket_local4.c
index 90ae93a..60dcd9d 100644
--- a/src/libstddjb/socket_local4.c
+++ b/src/libstddjb/socket_local4.c
@@ -3,18 +3,18 @@
 #include <skalibs/nonposix.h>
 #include <sys/socket.h>
 #include <netinet/in.h>
+#include <stdint.h>
+#include <string.h>
 #include <skalibs/uint16.h>
-#include <skalibs/bytestr.h>
 #include <skalibs/socket.h>
 
-int socket_local4 (int s, char *ip, uint16 *port)
+int socket_local4 (int s, char *ip, uint16_t *port)
 {
   struct sockaddr_in sa ;
   socklen_t dummy = sizeof sa ;
-
   if (getsockname(s, (struct sockaddr *)&sa, &dummy) == -1)
     return -1 ;
-  byte_copy(ip, 4, (char *)&sa.sin_addr.s_addr) ;
+  memcpy(ip, &sa.sin_addr.s_addr, 4) ;
   uint16_unpack_big((char *)&sa.sin_port, port) ;
   return 0 ;
 }
diff --git a/src/libstddjb/socket_local46.c b/src/libstddjb/socket_local46.c
index 0eeed8c..2483996 100644
--- a/src/libstddjb/socket_local46.c
+++ b/src/libstddjb/socket_local46.c
@@ -4,28 +4,29 @@
 #include <errno.h>
 #include <sys/socket.h>
 #include <netinet/in.h>
+#include <stdint.h>
+#include <string.h>
 #include <skalibs/uint16.h>
-#include <skalibs/bytestr.h>
 #include <skalibs/ip46.h>
 
 #ifdef SKALIBS_IPV6_ENABLED
 
-int socket_local46 (int s, ip46_t *ip, uint16 *port)
+int socket_local46 (int s, ip46_t *ip, uint16_t *port)
 {
   struct sockaddr_storage sa ;
   socklen_t dummy = sizeof sa ;
   if (getsockname(s, (struct sockaddr *)&sa, &dummy) < 0) return -1 ;
   if (sa.ss_family == AF_INET6)
   {
-    register struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *)&sa ;
-    byte_copy(ip->ip, 16, (char const *)sa6->sin6_addr.s6_addr) ;
+    struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *)&sa ;
+    memcpy(ip->ip, sa6->sin6_addr.s6_addr, 16) ;
     uint16_unpack_big((char *)&sa6->sin6_port, port) ;
     ip->is6 = 1 ;
   }
   else if (sa.ss_family == AF_INET)
   {
-    register struct sockaddr_in *sa4 = (struct sockaddr_in *)&sa ;
-    byte_copy(ip->ip, 4, (char const *)&sa4->sin_addr.s_addr) ;
+    struct sockaddr_in *sa4 = (struct sockaddr_in *)&sa ;
+    memcpy(ip->ip, &sa4->sin_addr.s_addr, 4) ;
     uint16_unpack_big((char *)&sa4->sin_port, port) ;
     ip->is6 = 0 ;
   }
diff --git a/src/libstddjb/socket_local6.c b/src/libstddjb/socket_local6.c
index b7025fc..6c2a0e5 100644
--- a/src/libstddjb/socket_local6.c
+++ b/src/libstddjb/socket_local6.c
@@ -3,21 +3,21 @@
 #include <skalibs/nonposix.h>
 #include <sys/socket.h>
 #include <netinet/in.h>
+#include <stdint.h>
+#include <string.h>
 #include <skalibs/uint16.h>
-#include <skalibs/bytestr.h>
 #include <skalibs/socket.h>
 #include <skalibs/ip46.h>
 
 #ifdef SKALIBS_IPV6_ENABLED
 
-int socket_local6 (int s, char *ip, uint16 *port)
+int socket_local6 (int s, char *ip, uint16_t *port)
 {
   struct sockaddr_in6 sa ;
   socklen_t dummy = sizeof sa ;
-
   if (getsockname(s, (struct sockaddr *)&sa, &dummy) == -1)
     return -1 ;
-  byte_copy(ip, 16, (char const *)sa.sin6_addr.s6_addr) ;
+  memcpy(ip, sa.sin6_addr.s6_addr, 16) ;
   uint16_unpack_big((char *)&sa.sin6_port, port) ;
   return 0 ;
 }
@@ -26,7 +26,7 @@ int socket_local6 (int s, char *ip, uint16 *port)
 
 #include <errno.h>
 
-int socket_local6 (int s, char *ip, uint16 *port)
+int socket_local6 (int s, char *ip, uint16_t *port)
 {
   (void)s ;
   (void)ip ;
diff --git a/src/libstddjb/socket_recv4.c b/src/libstddjb/socket_recv4.c
index 02354e9..09572d9 100644
--- a/src/libstddjb/socket_recv4.c
+++ b/src/libstddjb/socket_recv4.c
@@ -3,20 +3,21 @@
 #include <skalibs/nonposix.h>
 #include <sys/socket.h>
 #include <netinet/in.h>
+#include <stdint.h>
+#include <string.h>
 #include <errno.h>
 #include <skalibs/uint16.h>
-#include <skalibs/bytestr.h>
 #include <skalibs/socket.h>
 
-int socket_recv4 (int s, char *buf, unsigned int len, char *ip, uint16 *port)
+ssize_t socket_recv4 (int s, char *buf, size_t len, char *ip, uint16_t *port)
 {
   struct sockaddr_in sa ;
   socklen_t dummy = sizeof sa ;
-  register int r ;
+  ssize_t r ;
   do r = recvfrom(s, buf, len, 0, (struct sockaddr *)&sa, &dummy) ;
   while ((r == -1) && (errno == EINTR)) ;
   if (r == -1) return -1 ;
-  byte_copy(ip, 4, (char *)&sa.sin_addr) ;
+  memcpy(ip, &sa.sin_addr, 4) ;
   uint16_unpack_big((char *)&sa.sin_port, port) ;
   return r ;
 }
diff --git a/src/libstddjb/socket_recv6.c b/src/libstddjb/socket_recv6.c
index 6b2b4fc..be6ce3f 100644
--- a/src/libstddjb/socket_recv6.c
+++ b/src/libstddjb/socket_recv6.c
@@ -4,29 +4,30 @@
 #include <sys/socket.h>
 #include <netinet/in.h>
 #include <errno.h>
+#include <stdint.h>
+#include <string.h>
 #include <skalibs/uint16.h>
-#include <skalibs/bytestr.h>
 #include <skalibs/ip46.h>
 #include <skalibs/socket.h>
 
 #ifdef SKALIBS_IPV6_ENABLED
 
-int socket_recv6 (int s, char *buf, unsigned int len, char *ip6, uint16 *port)
+ssize_t socket_recv6 (int s, char *buf, size_t len, char *ip6, uint16_t *port)
 {
   struct sockaddr_in6 sa ;
   socklen_t dummy = sizeof sa ;
-  register int r ;
+  ssize_t r ;
   do r = recvfrom(s, buf, len, 0, (struct sockaddr *)&sa, &dummy) ;
   while ((r == -1) && (errno == EINTR)) ;
   if (r == -1) return -1 ;
-  byte_copy(ip6, 16, (char const *)sa.sin6_addr.s6_addr) ;
+  memcpy(ip6, sa.sin6_addr.s6_addr, 16) ;
   uint16_unpack_big((char *)&sa.sin6_port, port) ;
   return r ;
 }
 
 #else
 
-int socket_recv6 (int s, char *buf, unsigned int len, char *ip6, uint16 *port)
+ssize_t socket_recv6 (int s, char *buf, size_t len, char *ip6, uint16_t *port)
 {
   (void)s ;
   (void)buf ;
diff --git a/src/libstddjb/socket_remote4.c b/src/libstddjb/socket_remote4.c
index 767a694..57058d5 100644
--- a/src/libstddjb/socket_remote4.c
+++ b/src/libstddjb/socket_remote4.c
@@ -3,18 +3,18 @@
 #include <skalibs/nonposix.h>
 #include <sys/socket.h>
 #include <netinet/in.h>
+#include <stdint.h>
+#include <string.h>
 #include <skalibs/uint16.h>
-#include <skalibs/bytestr.h>
 #include <skalibs/socket.h>
 
-int socket_remote4 (int s, char *ip, uint16 *port)
+int socket_remote4 (int s, char *ip, uint16_t *port)
 {
   struct sockaddr_in sa ;
   socklen_t dummy = sizeof sa ;
-
   if (getpeername(s, (struct sockaddr *)&sa, &dummy) == -1)
     return -1 ;
-  byte_copy(ip, 4, (char *)&sa.sin_addr.s_addr) ;
+  memcpy(ip, &sa.sin_addr.s_addr, 4) ;
   uint16_unpack_big((char *)&sa.sin_port, port) ;
   return 0 ;
 }
diff --git a/src/libstddjb/socket_remote46.c b/src/libstddjb/socket_remote46.c
index da91417..6bd24a9 100644
--- a/src/libstddjb/socket_remote46.c
+++ b/src/libstddjb/socket_remote46.c
@@ -4,28 +4,29 @@
 #include <errno.h>
 #include <sys/socket.h>
 #include <netinet/in.h>
+#include <stdint.h>
+#include <string.h>
 #include <skalibs/uint16.h>
-#include <skalibs/bytestr.h>
 #include <skalibs/ip46.h>
 
 #ifdef SKALIBS_IPV6_ENABLED
 
-int socket_remote46 (int s, ip46_t *ip, uint16 *port)
+int socket_remote46 (int s, ip46_t *ip, uint16_t *port)
 {
   struct sockaddr sa ;
   socklen_t dummy = sizeof sa ;
   if (getpeername(s, &sa, &dummy) < 0) return -1 ;
   if (sa.sa_family == AF_INET6)
   {
-    register struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *)&sa ;
-    byte_copy(ip->ip, 16, (char const *)sa6->sin6_addr.s6_addr) ;
+    struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *)&sa ;
+    memcpy(ip->ip, sa6->sin6_addr.s6_addr, 16) ;
     uint16_unpack_big((char *)&sa6->sin6_port, port) ;
     ip->is6 = 1 ;
   }
   else if (sa.sa_family == AF_INET)
   {
-    register struct sockaddr_in *sa4 = (struct sockaddr_in *)&sa ;
-    byte_copy(ip->ip, 4, (char const *)&sa4->sin_addr.s_addr) ;
+    struct sockaddr_in *sa4 = (struct sockaddr_in *)&sa ;
+    memcpy(ip->ip, &sa4->sin_addr.s_addr, 4) ;
     uint16_unpack_big((char *)&sa4->sin_port, port) ;
     ip->is6 = 0 ;
   }
diff --git a/src/libstddjb/socket_remote6.c b/src/libstddjb/socket_remote6.c
index 4c642e1..6b282ef 100644
--- a/src/libstddjb/socket_remote6.c
+++ b/src/libstddjb/socket_remote6.c
@@ -4,28 +4,28 @@
 #include <errno.h>
 #include <sys/socket.h>
 #include <netinet/in.h>
+#include <stdint.h>
+#include <string.h>
 #include <skalibs/uint16.h>
-#include <skalibs/bytestr.h>
 #include <skalibs/ip46.h>
 #include <skalibs/socket.h>
 
 #ifdef SKALIBS_IPV6_ENABLED
 
-int socket_remote6 (int s, char *ip, uint16 *port)
+int socket_remote6 (int s, char *ip, uint16_t *port)
 {
   struct sockaddr_in6 sa ;
   socklen_t dummy = sizeof sa ;
-
   if (getpeername(s, (struct sockaddr *)&sa, &dummy) == -1)
     return -1 ;
-  byte_copy(ip, 16, (char const *)sa.sin6_addr.s6_addr) ;
+  memcpy(ip, sa.sin6_addr.s6_addr, 16) ;
   uint16_unpack_big((char *)&sa.sin6_port, port) ;
   return 0 ;
 }
 
 #else
 
-int socket_remote6 (int s, char *ip, uint16 *port)
+int socket_remote6 (int s, char *ip, uint16_t *port)
 {
   (void)s ;
   (void)ip ;
diff --git a/src/libstddjb/socket_send4.c b/src/libstddjb/socket_send4.c
index 6078dff..0431aa5 100644
--- a/src/libstddjb/socket_send4.c
+++ b/src/libstddjb/socket_send4.c
@@ -3,19 +3,20 @@
 #include <skalibs/nonposix.h>
 #include <sys/socket.h>
 #include <netinet/in.h>
+#include <stdint.h>
+#include <string.h>
 #include <errno.h>
 #include <skalibs/uint16.h>
-#include <skalibs/bytestr.h>
 #include <skalibs/socket.h>
 
-int socket_send4 (int s, char const *buf, unsigned int len, char const *ip, uint16 port)
+ssize_t socket_send4 (int s, char const *buf, size_t len, char const *ip, uint16_t port)
 {
   struct sockaddr_in sa ;
-  register int r ;
-  byte_zero((char *)&sa, sizeof sa) ;
+  ssize_t r ;
+  memset(&sa, 0, sizeof sa) ;
   sa.sin_family = AF_INET ;
   uint16_pack_big((char *)&sa.sin_port, port) ;
-  byte_copy((char *)&sa.sin_addr, 4, ip) ;
+  memcpy(&sa.sin_addr, ip, 4) ;
   do r = sendto(s, buf, len, 0, (struct sockaddr *)&sa, sizeof sa) ;
   while ((r == -1) && (errno == EINTR)) ;
   return r ;
diff --git a/src/libstddjb/socket_send6.c b/src/libstddjb/socket_send6.c
index 6349cdb..82a0357 100644
--- a/src/libstddjb/socket_send6.c
+++ b/src/libstddjb/socket_send6.c
@@ -1,24 +1,25 @@
 /* ISC license. */
 
 #include <skalibs/nonposix.h>
+#include <stdint.h>
+#include <string.h>
 #include <errno.h>
 #include <sys/socket.h>
 #include <netinet/in.h>
 #include <skalibs/uint16.h>
-#include <skalibs/bytestr.h>
 #include <skalibs/ip46.h>
 #include <skalibs/socket.h>
 
 #ifdef SKALIBS_IPV6_ENABLED
 
-int socket_send6 (int s, char const *buf, unsigned int len, char const *ip6, uint16 port)
+ssize_t socket_send6 (int s, char const *buf, size_t len, char const *ip6, uint16_t port)
 {
   struct sockaddr_in6 sa ;
-  register int r ;
-  byte_zero((char *)&sa, sizeof sa) ;
+  ssize_t r ;
+  memset(&sa, 0, sizeof sa) ;
   sa.sin6_family = AF_INET6 ;
   uint16_pack_big((char *)&sa.sin6_port, port) ;
-  byte_copy((char *)sa.sin6_addr.s6_addr, 16, ip6) ;
+  memcpy(sa.sin6_addr.s6_addr, ip6, 16) ;
   do r = sendto(s, buf, len, 0, (struct sockaddr *)&sa, sizeof sa) ;
   while ((r == -1) && (errno == EINTR)) ;
   return r ;
@@ -26,7 +27,7 @@ int socket_send6 (int s, char const *buf, unsigned int len, char const *ip6, uin
 
 #else
 
-int socket_send6 (int s, char const *buf, unsigned int len, char const *ip6, uint16 port)
+ssize_t socket_send6 (int s, char const *buf, size_t len, char const *ip6, uint16_t port)
 {
   (void)s ;
   (void)buf ;
diff --git a/src/libstddjb/socket_tcp6.c b/src/libstddjb/socket_tcp6.c
index fd282fc..df6dd86 100644
--- a/src/libstddjb/socket_tcp6.c
+++ b/src/libstddjb/socket_tcp6.c
@@ -18,7 +18,7 @@ int socket_tcp6_internal (unsigned int flags)
     int option = 1 ;
     if (setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, &option, sizeof(option)) < 0)
     {
-      register int e = errno ;
+      int e = errno ;
       fd_close(fd) ;
       errno = e ;
       return -1 ;
diff --git a/src/libstddjb/socket_timeoutconn.c b/src/libstddjb/socket_timeoutconn.c
index ec7e251..3288426 100644
--- a/src/libstddjb/socket_timeoutconn.c
+++ b/src/libstddjb/socket_timeoutconn.c
@@ -1,10 +1,10 @@
 /* ISC license. */
 
-#include <skalibs/uint16.h>
+#include <stdint.h>
 #include <skalibs/tai.h>
 #include <skalibs/socket.h>
 
-int socket_timeoutconn (int s, char const *ip, uint16 port, unsigned int timeout)
+int socket_timeoutconn (int s, char const *ip, uint16_t port, unsigned int timeout)
 {
   tain_t stamp, deadline ;
   tain_now(&stamp) ;
diff --git a/src/libstddjb/socket_tryr.c b/src/libstddjb/socket_tryr.c
index 6544c9d..26c04b2 100644
--- a/src/libstddjb/socket_tryr.c
+++ b/src/libstddjb/socket_tryr.c
@@ -8,7 +8,7 @@ void socket_tryreservein (int s, unsigned int size)
 {
   while (size >= 1024)
   {
-    if (setsockopt(s, SOL_SOCKET, SO_RCVBUF, &size, sizeof size) == 0) return ;
+    if (!setsockopt(s, SOL_SOCKET, SO_RCVBUF, &size, sizeof size)) return ;
     size -= (size >> 5) ;
   }
 }
diff --git a/src/libstddjb/socket_udp6.c b/src/libstddjb/socket_udp6.c
index 41d395a..c8f5928 100644
--- a/src/libstddjb/socket_udp6.c
+++ b/src/libstddjb/socket_udp6.c
@@ -18,7 +18,7 @@ int socket_udp6_internal (unsigned int flags)
     int option = 1 ;
     if (setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, &option, sizeof(option)) < 0)
     {
-      register int e = errno ;
+      int e = errno ;
       fd_close(fd) ;
       errno = e ;
       return -1 ;
diff --git a/src/libstddjb/socket_waitconn.c b/src/libstddjb/socket_waitconn.c
index 6e5c352..aca0bbf 100644
--- a/src/libstddjb/socket_waitconn.c
+++ b/src/libstddjb/socket_waitconn.c
@@ -11,7 +11,7 @@ int socket_waitconn (int s, tain_t const *deadline, tain_t *stamp)
   iopause_fd x = { s, IOPAUSE_WRITE, 0 } ;
   for (;;)
   {
-    register int r = iopause_stamp(&x, 1, deadline, stamp) ;
+    int r = iopause_stamp(&x, 1, deadline, stamp) ;
     if (r < 0) return 0 ;
     if (!r) return (errno = ETIMEDOUT, 0) ;
     if (x.revents & IOPAUSE_WRITE) break ;
diff --git a/src/libstddjb/socketpair_internal.c b/src/libstddjb/socketpair_internal.c
index 8e62bdf..a1e64c5 100644
--- a/src/libstddjb/socketpair_internal.c
+++ b/src/libstddjb/socketpair_internal.c
@@ -45,7 +45,7 @@ int socketpair_internal (int domain, int type, int protocol, unsigned int flags,
 
  err:
   {
-    register int e = errno ;
+    int e = errno ;
     fd_close(fd[1]) ;
     fd_close(fd[0]) ;
     errno = e ;
diff --git a/src/libstddjb/str_chr.c b/src/libstddjb/str_chr.c
index a415de6..bbb67f9 100644
--- a/src/libstddjb/str_chr.c
+++ b/src/libstddjb/str_chr.c
@@ -1,6 +1,5 @@
 /* ISC license. */
 
-#include <sys/types.h>
 #include <string.h>
 #include <skalibs/bytestr.h>
 
diff --git a/src/libstddjb/str_rchr.c b/src/libstddjb/str_rchr.c
index c82ee69..76e8e4e 100644
--- a/src/libstddjb/str_rchr.c
+++ b/src/libstddjb/str_rchr.c
@@ -1,12 +1,11 @@
 /* ISC license. */
 
-#include <sys/types.h>
 #include <string.h>
 #include <skalibs/bytestr.h>
 
-size_t str_rchr (register char const *s, int c)
+size_t str_rchr (char const *s, int c)
 {
-  register char *p = strrchr(s, c) ;
+  char *p = strrchr(s, c) ;
   return p ? p - s : strlen(s) ;
 }
 
diff --git a/src/libstddjb/str_start.c b/src/libstddjb/str_start.c
index 30396bd..a254a9a 100644
--- a/src/libstddjb/str_start.c
+++ b/src/libstddjb/str_start.c
@@ -1,16 +1,9 @@
 /* ISC license. */
 
+#include <string.h>
 #include <skalibs/bytestr.h>
 
-int str_start (register char const *s, register char const *t)
+int str_start (char const *s, char const *t)
 {
-  register char x ;
-
-  for (;;)
-  {
-    x = *t++; if (!x) return 1; if (x != *s++) return 0;
-    x = *t++; if (!x) return 1; if (x != *s++) return 0;
-    x = *t++; if (!x) return 1; if (x != *s++) return 0;
-    x = *t++; if (!x) return 1; if (x != *s++) return 0;
-  }
+  return !strncmp(s, t, strlen(t)) ;
 }
diff --git a/src/libstddjb/str_strn.c b/src/libstddjb/str_strn.c
index fef219b..b7c3090 100644
--- a/src/libstddjb/str_strn.c
+++ b/src/libstddjb/str_strn.c
@@ -1,6 +1,5 @@
 /* ISC license. */
 
-#include <sys/types.h>
 #include <string.h>
 #include <skalibs/bytestr.h>
 
@@ -9,8 +8,8 @@ size_t str_strn (char const *haystack, size_t hlen, char const *needle, size_t n
   char haystack2[hlen+1] ;
   char needle2[nlen+1] ;
   char *p ;
-  byte_copy(haystack2, hlen, haystack) ; haystack2[hlen] = 0 ;
-  byte_copy(needle2, nlen, needle) ; needle2[nlen] = 0 ;
+  memcpy(haystack2, haystack, hlen) ; haystack2[hlen] = 0 ;
+  memcpy(needle2, needle, nlen) ; needle2[nlen] = 0 ;
   p = strstr(haystack2, needle2) ;
   return p ? p - haystack2 : hlen ;
 }
diff --git a/src/libstddjb/stralloc_catb.c b/src/libstddjb/stralloc_catb.c
index f1bdc0a..dac5075 100644
--- a/src/libstddjb/stralloc_catb.c
+++ b/src/libstddjb/stralloc_catb.c
@@ -1,6 +1,5 @@
 /* ISC license. */
 
-#include <sys/types.h>
 #include <string.h>
 #include <skalibs/stralloc.h>
 
diff --git a/src/libstddjb/stralloc_catv.c b/src/libstddjb/stralloc_catv.c
index a0c50aa..df1432e 100644
--- a/src/libstddjb/stralloc_catv.c
+++ b/src/libstddjb/stralloc_catv.c
@@ -1,6 +1,5 @@
 /* ISC license. */
 
-#include <sys/types.h>
 #include <string.h>
 #include <sys/uio.h>
 #include <skalibs/siovec.h>
diff --git a/src/libstddjb/stralloc_copyb.c b/src/libstddjb/stralloc_copyb.c
index 31fc31e..26c3a4c 100644
--- a/src/libstddjb/stralloc_copyb.c
+++ b/src/libstddjb/stralloc_copyb.c
@@ -1,6 +1,5 @@
 /* ISC license. */
 
-#include <sys/types.h>
 #include <string.h>
 #include <skalibs/stralloc.h>
 
diff --git a/src/libstddjb/stralloc_insertb.c b/src/libstddjb/stralloc_insertb.c
index f964ea5..1f0a99d 100644
--- a/src/libstddjb/stralloc_insertb.c
+++ b/src/libstddjb/stralloc_insertb.c
@@ -1,6 +1,6 @@
 /* ISC license. */
 
-#include <sys/types.h>
+#include <string.h>
 #include <errno.h>
 #include <skalibs/stralloc.h>
 
diff --git a/src/libstddjb/stralloc_ready_tuned.c b/src/libstddjb/stralloc_ready_tuned.c
index 53a47cd..d365d6e 100644
--- a/src/libstddjb/stralloc_ready_tuned.c
+++ b/src/libstddjb/stralloc_ready_tuned.c
@@ -1,13 +1,13 @@
 /* ISC license. */
 
-#include <sys/types.h>
+#include <string.h>
 #include <errno.h>
 #include <skalibs/alloc.h>
 #include <skalibs/stralloc.h>
 
 int stralloc_ready_tuned (stralloc *sa, size_t n, size_t base, size_t a, size_t b)
 {
-  register size_t t ;
+  size_t t ;
   if (!b) return (errno = EINVAL, 0) ;
   t = n + base + a * n / b ;
   if (t < n) return (errno = ERANGE, 0) ;
diff --git a/src/libstddjb/stralloc_reverse.c b/src/libstddjb/stralloc_reverse.c
index 46d22cb..38e22bb 100644
--- a/src/libstddjb/stralloc_reverse.c
+++ b/src/libstddjb/stralloc_reverse.c
@@ -1,11 +1,11 @@
 /* ISC license. */
 
-#include <sys/types.h>
+#include <string.h>
 #include <skalibs/stralloc.h>
 
 void stralloc_reverse (stralloc *sa)
 {
-  register size_t i = 0 ;
+  size_t i = 0 ;
   for (; i < sa->len >> 1 ; i++)
   {
     char tmp = sa->s[i] ;
diff --git a/src/libstddjb/stralloc_reverse_blocks.c b/src/libstddjb/stralloc_reverse_blocks.c
index 67a18de..86b7fc4 100644
--- a/src/libstddjb/stralloc_reverse_blocks.c
+++ b/src/libstddjb/stralloc_reverse_blocks.c
@@ -1,13 +1,12 @@
 /* ISC license. */
 
-#include <sys/types.h>
 #include <string.h>
 #include <skalibs/stralloc.h>
 
 void stralloc_reverse_blocks (stralloc *sa, size_t size)
 {
-  register size_t n = sa->len / (size << 1) ;
-  register size_t i = 0 ;
+  size_t n = sa->len / (size << 1) ;
+  size_t i = 0 ;
   char tmp[size] ;
   for (; i < n ; i++)
   {
diff --git a/src/libstddjb/strerr_sys.c b/src/libstddjb/strerr_sys.c
index 46789d8..e388f5a 100644
--- a/src/libstddjb/strerr_sys.c
+++ b/src/libstddjb/strerr_sys.c
@@ -3,13 +3,13 @@
 /* MT-unsafe */
 
 #include <unistd.h>
+#include <string.h>
 #include <errno.h>
-#include <skalibs/error.h>
 #include <skalibs/strerr.h>
 
 void strerr_warnsys (char const *x1, char const *x2, char const *x3, char const *x4, char const *x5, char const *x6, char const *x7, char const *x8, char const *x9, char const *x10)
 {
-  strerr_warn(x1, x2, x3, x4, x5, x6, x7, x8, x9, x10, error_str(errno)) ;
+  strerr_warn(x1, x2, x3, x4, x5, x6, x7, x8, x9, x10, strerror(errno)) ;
 }
 
 void strerr_diesys (int e, char const *x1, char const *x2, char const *x3, char const *x4, char const *x5, char const *x6, char const *x7, char const *x8, char const *x9, char const *x10)
diff --git a/src/libstddjb/string_format.c b/src/libstddjb/string_format.c
index 73c2572..b4a1bfa 100644
--- a/src/libstddjb/string_format.c
+++ b/src/libstddjb/string_format.c
@@ -1,6 +1,5 @@
 /* ISC license. */
 
-#include <sys/types.h>
 #include <string.h>
 #include <errno.h>
 #include <skalibs/bytestr.h>
diff --git a/src/libstddjb/string_quote.c b/src/libstddjb/string_quote.c
index 37258c5..e648af4 100644
--- a/src/libstddjb/string_quote.c
+++ b/src/libstddjb/string_quote.c
@@ -1,6 +1,6 @@
 /* ISC license. */
 
-#include <sys/types.h>
+#include <string.h>
 #include <skalibs/stralloc.h>
 #include <skalibs/skamisc.h>
 
diff --git a/src/libstddjb/string_quote_nodelim.c b/src/libstddjb/string_quote_nodelim.c
index 26b612f..a25a4e6 100644
--- a/src/libstddjb/string_quote_nodelim.c
+++ b/src/libstddjb/string_quote_nodelim.c
@@ -1,6 +1,6 @@
 /* ISC license. */
 
-#include <sys/types.h>
+#include <string.h>
 #include <skalibs/stralloc.h>
 #include <skalibs/skamisc.h>
 
diff --git a/src/libstddjb/string_quote_nodelim_mustquote.c b/src/libstddjb/string_quote_nodelim_mustquote.c
index a978921..535628d 100644
--- a/src/libstddjb/string_quote_nodelim_mustquote.c
+++ b/src/libstddjb/string_quote_nodelim_mustquote.c
@@ -1,8 +1,7 @@
 /* ISC license. */
 
-#include <sys/types.h>
+#include <string.h>
 #include <errno.h>
-#include <skalibs/bytestr.h>
 #include <skalibs/fmtscan.h>
 #include <skalibs/stralloc.h>
 #include <skalibs/skamisc.h>
diff --git a/src/libstddjb/string_unquote.c b/src/libstddjb/string_unquote.c
index 4245014..d22f46d 100644
--- a/src/libstddjb/string_unquote.c
+++ b/src/libstddjb/string_unquote.c
@@ -1,6 +1,5 @@
 /* ISC license. */
 
-#include <sys/types.h>
 #include <string.h>
 #include <errno.h>
 #include <skalibs/skamisc.h>
diff --git a/src/libstddjb/strn_fmt.c b/src/libstddjb/strn_fmt.c
index 0c6ffb7..d8cf58f 100644
--- a/src/libstddjb/strn_fmt.c
+++ b/src/libstddjb/strn_fmt.c
@@ -4,9 +4,9 @@
 #include <skalibs/types.h>
 #include <skalibs/fmtscan.h>
 
-size_t strn_fmt (char *blah, register char const *s, size_t len)
+size_t strn_fmt (char *blah, char const *s, size_t len)
 {
-  register char *d = blah ;
+  char *d = blah ;
   size_t i ;
   for (i = 0 ; i < len ; i++)
     if ((s[i] >= 32) && ((unsigned char)s[i] < 127)) *d++ = s[i] ;
diff --git a/src/libstddjb/sysclock_from_localtm.c b/src/libstddjb/sysclock_from_localtm.c
index 6408fc8..3bce55a 100644
--- a/src/libstddjb/sysclock_from_localtm.c
+++ b/src/libstddjb/sysclock_from_localtm.c
@@ -1,13 +1,12 @@
 /* ISC license. */
 
-#include <sys/types.h>
 #include <time.h>
 #include <skalibs/uint64.h>
 #include <skalibs/djbtime.h>
 
-int sysclock_from_localtm (uint64 *uu, struct tm const *l)
+int sysclock_from_localtm (uint64_t *uu, struct tm const *l)
 {
-  uint64 u ;
+  uint64_t u ;
   if (!ltm64_from_localtm(&u, l)) return 0 ;
   if (!sysclock_from_ltm64(&u)) return 0 ;
   *uu = u ;
diff --git a/src/libstddjb/sysclock_from_ltm64.c b/src/libstddjb/sysclock_from_ltm64.c
index a7e7a36..abdd31d 100644
--- a/src/libstddjb/sysclock_from_ltm64.c
+++ b/src/libstddjb/sysclock_from_ltm64.c
@@ -8,7 +8,7 @@
 
 #include <skalibs/tai.h>
 
-int sysclock_from_ltm64 (uint64 *u)
+int sysclock_from_ltm64 (uint64_t *u)
 {
   tai_t t ;
   if (!tai_from_ltm64(&t, *u)) return 0 ;
@@ -18,7 +18,7 @@ int sysclock_from_ltm64 (uint64 *u)
 
 #else
 
-int sysclock_from_ltm64 (uint64 *u)
+int sysclock_from_ltm64 (uint64_t *u)
 {
   return utc_from_sysclock(u) ;
 }
diff --git a/src/libstddjb/sysclock_from_tai.c b/src/libstddjb/sysclock_from_tai.c
index 3814bf2..02e5e2a 100644
--- a/src/libstddjb/sysclock_from_tai.c
+++ b/src/libstddjb/sysclock_from_tai.c
@@ -2,11 +2,12 @@
 
 #include <errno.h>
 #include <skalibs/config.h>
+#include <skalibs/uint64.h>
 #include <skalibs/tai.h>
 
 #ifdef SKALIBS_FLAG_CLOCKISTAI
 
-int sysclock_from_tai (uint64 *u, tai_t const *t)
+int sysclock_from_tai (uint64_t *u, tai_t const *t)
 {
   if (t->x < 10U) return (errno = EINVAL, 0) ;
   *u = t->x - 10U ;
@@ -17,7 +18,7 @@ int sysclock_from_tai (uint64 *u, tai_t const *t)
 
 #include <skalibs/djbtime.h>
 
-int sysclock_from_tai (uint64 *u, tai_t const *t)
+int sysclock_from_tai (uint64_t *u, tai_t const *t)
 {
   return utc_from_tai(u, t) ;
 }
diff --git a/src/libstddjb/sysclock_from_utc.c b/src/libstddjb/sysclock_from_utc.c
index 49228a7..3f862aa 100644
--- a/src/libstddjb/sysclock_from_utc.c
+++ b/src/libstddjb/sysclock_from_utc.c
@@ -9,7 +9,7 @@
 
 #include <skalibs/tai.h>
 
-int sysclock_from_utc (uint64 *u)
+int sysclock_from_utc (uint64_t *u)
 {
   tai_t t ;
   if (!tai_from_utc(&t, *u)) return 0 ;
@@ -20,7 +20,7 @@ int sysclock_from_utc (uint64 *u)
 
 #else
 
-int sysclock_from_utc (uint64 *u)
+int sysclock_from_utc (uint64_t *u)
 {
   (void)u ;
   return 1 ;
diff --git a/src/libstddjb/tai_from_localtm.c b/src/libstddjb/tai_from_localtm.c
index 1f43070..b372bf5 100644
--- a/src/libstddjb/tai_from_localtm.c
+++ b/src/libstddjb/tai_from_localtm.c
@@ -1,6 +1,5 @@
 /* ISC license. */
 
-#include <sys/types.h>
 #include <time.h>
 #include <skalibs/uint64.h>
 #include <skalibs/tai.h>
@@ -8,7 +7,7 @@
 
 int tai_from_localtm (tai_t *t, struct tm const *l)
 {
-  uint64 u ;
+  uint64_t u ;
   if (!ltm64_from_localtm(&u, l)) return 0 ;
   return tai_from_ltm64(t, u) ;
 }
diff --git a/src/libstddjb/tai_from_ltm64.c b/src/libstddjb/tai_from_ltm64.c
index 0ecb49a..a2a4e4c 100644
--- a/src/libstddjb/tai_from_ltm64.c
+++ b/src/libstddjb/tai_from_ltm64.c
@@ -5,7 +5,7 @@
 #include <skalibs/djbtime.h>
 #include "djbtime-internal.h"
 
-int tai_from_ltm64 (tai_t *t, uint64 u)
+int tai_from_ltm64 (tai_t *t, uint64_t u)
 {
   switch (skalibs_tzisright())
   {
diff --git a/src/libstddjb/tai_from_sysclock.c b/src/libstddjb/tai_from_sysclock.c
index 087f353..b813108 100644
--- a/src/libstddjb/tai_from_sysclock.c
+++ b/src/libstddjb/tai_from_sysclock.c
@@ -1,11 +1,12 @@
 /* ISC license. */
 
 #include <skalibs/config.h>
+#include <skalibs/uint64.h>
 #include <skalibs/tai.h>
 
 #ifdef SKALIBS_FLAG_CLOCKISTAI
 
-int tai_from_sysclock (tai_t *t, uint64 u)
+int tai_from_sysclock (tai_t *t, uint64_t u)
 {
   return tai_u64(t, u + 10U) ;
 }
@@ -14,7 +15,7 @@ int tai_from_sysclock (tai_t *t, uint64 u)
 
 #include <skalibs/djbtime.h>
 
-int tai_from_sysclock (tai_t *t, uint64 u)
+int tai_from_sysclock (tai_t *t, uint64_t u)
 {
   return tai_from_utc(t, u) ;
 }
diff --git a/src/libstddjb/tai_from_utc.c b/src/libstddjb/tai_from_utc.c
index 3f4d5ec..1b9762b 100644
--- a/src/libstddjb/tai_from_utc.c
+++ b/src/libstddjb/tai_from_utc.c
@@ -5,7 +5,7 @@
 #include <skalibs/djbtime.h>
 #include "djbtime-internal.h"
 
-int tai_from_utc (tai_t *t, uint64 u)
+int tai_from_utc (tai_t *t, uint64_t u)
 {
   leapsecs_add(&u, 0) ;
   return tai_u64(t, u + 10) ;
diff --git a/src/libstddjb/tai_now.c b/src/libstddjb/tai_now.c
index aaf388a..a9710d4 100644
--- a/src/libstddjb/tai_now.c
+++ b/src/libstddjb/tai_now.c
@@ -7,7 +7,7 @@
 
 int tai_now (tai_t *t)
 {
-  register time_t u = time(0) ;
+  time_t u = time(0) ;
   if (u == (time_t)-1) return 0 ;
   return tai_from_time_sysclock(t, u) ;
 }
diff --git a/src/libstddjb/tai_u64.c b/src/libstddjb/tai_u64.c
index 9132ff3..624f2cb 100644
--- a/src/libstddjb/tai_u64.c
+++ b/src/libstddjb/tai_u64.c
@@ -9,9 +9,9 @@
 #include <skalibs/uint64.h>
 #include <skalibs/tai.h>
 
-int tai_u64 (tai_t *t, uint64 u)
+int tai_u64 (tai_t *t, uint64_t u)
 {
-  if (u & ((uint64)1 << 63)) return (errno = EOVERFLOW, 0) ;
+  if (u & ((uint64_t)1 << 63)) return (errno = EOVERFLOW, 0) ;
   t->x = u ;
   return 1 ;
 }
diff --git a/src/libstddjb/tain_addsec.c b/src/libstddjb/tain_addsec.c
index b0d19e2..cd22b18 100644
--- a/src/libstddjb/tain_addsec.c
+++ b/src/libstddjb/tain_addsec.c
@@ -7,12 +7,12 @@ int tain_addsec (tain_t *b, tain_t const *a, int c)
 {
   if (c >= 0)
   {
-    tai_t t = { .x = (uint64)c } ;
+    tai_t t = { .x = (uint64_t)c } ;
     tai_add(&b->sec, &a->sec, &t) ;
   }
   else
   {
-    tai_t t = { .x = (uint64)-c } ;
+    tai_t t = { .x = (uint64_t)-c } ;
     tai_sub(&b->sec, &a->sec, &t) ;
   }
   b->nano = a->nano ;
diff --git a/src/libstddjb/tain_fmt.c b/src/libstddjb/tain_fmt.c
index 1fa04e3..ce64832 100644
--- a/src/libstddjb/tain_fmt.c
+++ b/src/libstddjb/tain_fmt.c
@@ -1,9 +1,10 @@
 /* ISC license. */
 
+#include <sys/types.h>
 #include <skalibs/fmtscan.h>
 #include <skalibs/tai.h>
 
-unsigned int tain_fmt (char *s, tain_t const *a)
+size_t tain_fmt (char *s, tain_t const *a)
 {
   char pack[TAIN_PACK] ;
   tain_pack(pack, a) ;
diff --git a/src/libstddjb/tain_from_ntp.c b/src/libstddjb/tain_from_ntp.c
index 5314a38..68fa699 100644
--- a/src/libstddjb/tain_from_ntp.c
+++ b/src/libstddjb/tain_from_ntp.c
@@ -4,10 +4,10 @@
 #include <skalibs/tai.h>
 #include <skalibs/djbtime.h>
 
-int tain_from_ntp (tain_t *a, uint64 u)
+int tain_from_ntp (tain_t *a, uint64_t u)
 {
   tai_t secs = { .x = u >> 32 } ;
-  if (secs.x <= 0x7FFFFFFFUL) secs.x |= ((uint64)1 << 32) ;
+  if (secs.x <= 0x7FFFFFFFUL) secs.x |= ((uint64_t)1 << 32) ;
   secs.x += TAI_MAGIC ;
   secs.x -= NTP_OFFSET ;
   if (!tai_from_utc(&secs, secs.x)) return 0 ;
diff --git a/src/libstddjb/tain_scan.c b/src/libstddjb/tain_scan.c
index 84a0cab..6ab181d 100644
--- a/src/libstddjb/tain_scan.c
+++ b/src/libstddjb/tain_scan.c
@@ -1,12 +1,13 @@
 /* ISC license. */
 
+#include <sys/types.h>
 #include <skalibs/fmtscan.h>
 #include <skalibs/tai.h>
 
-unsigned int tain_scan (char const *s, tain_t *a)
+size_t tain_scan (char const *s, tain_t *a)
 {
   char pack[TAIN_PACK] ;
-  register unsigned int r = ucharn_scan(s, pack, TAIN_PACK) ;
+  size_t r = ucharn_scan(s, pack, TAIN_PACK) ;
   if (r) tain_unpack(pack, a) ;
   return r ;
 }
diff --git a/src/libstddjb/tain_to_millisecs.c b/src/libstddjb/tain_to_millisecs.c
index 0fa9395..0854c49 100644
--- a/src/libstddjb/tain_to_millisecs.c
+++ b/src/libstddjb/tain_to_millisecs.c
@@ -5,7 +5,7 @@
 
 int tain_to_millisecs (tain_t const *a)
 {
-  if (a->sec.x > (uint64)2147483) return -1 ;
-  if ((a->sec.x == (uint64)2147483) && (a->nano > 646000000U)) return -1 ;
+  if (a->sec.x > (uint64_t)2147483) return -1 ;
+  if ((a->sec.x == (uint64_t)2147483) && (a->nano > 646000000U)) return -1 ;
   return a->sec.x * 1000 + (a->nano + 999999) / 1000000U ;
 }
diff --git a/src/libstddjb/time_from_tai.c b/src/libstddjb/time_from_tai.c
index cdf1357..406fcfb 100644
--- a/src/libstddjb/time_from_tai.c
+++ b/src/libstddjb/time_from_tai.c
@@ -5,14 +5,15 @@
 #define _BSD_SOURCE
 #endif
 
-#include <sys/types.h>
-#include <errno.h>
 #include <skalibs/sysdeps.h>
+#include <time.h>
+#include <errno.h>
+#include <skalibs/uint64.h>
 #include <skalibs/tai.h>
 
 int time_from_tai (time_t *u, tai_t const *t)
 {
-  register uint64 uu = t->x - TAI_MAGIC ;
+  register uint64_t uu = t->x - TAI_MAGIC ;
 #if SKALIBS_SIZEOFTIME < 8
   if ((uu >> 32) && (uu >> 32) != 0xffffffffUL)
     return (errno = EOVERFLOW, 0) ;
diff --git a/src/libstddjb/time_from_tai_relative.c b/src/libstddjb/time_from_tai_relative.c
index 52e8c2a..1d11e2e 100644
--- a/src/libstddjb/time_from_tai_relative.c
+++ b/src/libstddjb/time_from_tai_relative.c
@@ -5,9 +5,9 @@
 #define _BSD_SOURCE
 #endif
 
-#include <sys/types.h>
-#include <errno.h>
 #include <skalibs/sysdeps.h>
+#include <time.h>
+#include <errno.h>
 #include <skalibs/tai.h>
 
 int time_from_tai_relative (time_t *u, tai_t const *t)
diff --git a/src/libstddjb/time_sysclock_from_tai.c b/src/libstddjb/time_sysclock_from_tai.c
index 4faa70a..3e8322b 100644
--- a/src/libstddjb/time_sysclock_from_tai.c
+++ b/src/libstddjb/time_sysclock_from_tai.c
@@ -5,15 +5,15 @@
 #define _BSD_SOURCE
 #endif
 
-#include <sys/types.h>
-#include <errno.h>
 #include <skalibs/sysdeps.h>
+#include <time.h>
+#include <errno.h>
 #include <skalibs/uint64.h>
 #include <skalibs/tai.h>
 
 int time_sysclock_from_tai (time_t *u, tai_t const *t)
 {
-  uint64 uu ;
+  uint64_t uu ;
   if (!sysclock_from_tai(&uu, t)) return 0 ;
   uu -= TAI_MAGIC ;
 #if SKALIBS_SIZEOFTIME < 8
diff --git a/src/libstddjb/timestamp_fmt.c b/src/libstddjb/timestamp_fmt.c
index 1956723..816e523 100644
--- a/src/libstddjb/timestamp_fmt.c
+++ b/src/libstddjb/timestamp_fmt.c
@@ -1,8 +1,9 @@
 /* ISC license. */
 
+#include <sys/types.h>
 #include <skalibs/tai.h>
 
-unsigned int timestamp_fmt (char *s, tain_t const *a)
+size_t timestamp_fmt (char *s, tain_t const *a)
 {
   *s = '@' ;
   return 1 + tain_fmt(s+1, a) ;
diff --git a/src/libstddjb/timestamp_scan.c b/src/libstddjb/timestamp_scan.c
index 1d48612..95671ee 100644
--- a/src/libstddjb/timestamp_scan.c
+++ b/src/libstddjb/timestamp_scan.c
@@ -1,10 +1,11 @@
 /* ISC license. */
 
+#include <sys/types.h>
 #include <skalibs/tai.h>
 
-unsigned int timestamp_scan (char const *s, tain_t *a)
+size_t timestamp_scan (char const *s, tain_t *a)
 {
-  register unsigned int r ;
+  size_t r ;
   if (*s != '@') return 0 ;
   r = tain_scan(s+1, a) ;
   return r ? r+1 : 0 ;
diff --git a/src/libstddjb/ucharn_findlen.c b/src/libstddjb/ucharn_findlen.c
index 59b5577..b770035 100644
--- a/src/libstddjb/ucharn_findlen.c
+++ b/src/libstddjb/ucharn_findlen.c
@@ -5,7 +5,7 @@
 
 size_t ucharn_findlen (char const *s)
 {
-  register size_t i = 0 ;
+  size_t i = 0 ;
   while (fmtscan_num(s[i], 16) <= 0xF) i++ ;
   return i ;
 }
diff --git a/src/libstddjb/ucharn_fmt.c b/src/libstddjb/ucharn_fmt.c
index 5eec54f..cf2b2af 100644
--- a/src/libstddjb/ucharn_fmt.c
+++ b/src/libstddjb/ucharn_fmt.c
@@ -5,7 +5,7 @@
 
 size_t ucharn_fmt (char *s, char const *key, size_t n)
 {
-  register size_t i = 0 ;
+  size_t i = 0 ;
   for (; i < n ; i++)
   {
     s[i<<1] = fmtscan_asc((unsigned char)key[i] >> 4) ;
diff --git a/src/libstddjb/ucharn_fmt_little.c b/src/libstddjb/ucharn_fmt_little.c
index d033096..3848082 100644
--- a/src/libstddjb/ucharn_fmt_little.c
+++ b/src/libstddjb/ucharn_fmt_little.c
@@ -5,7 +5,7 @@
 
 size_t ucharn_fmt_little (char *s, char const *key, size_t n)
 {
-  register size_t i = 0 ;
+  size_t i = 0 ;
   for (; i < n ; i++)
   {
     s[i<<1] = fmtscan_asc((unsigned char)key[i] & 0xF) ;
diff --git a/src/libstddjb/ucharn_scan.c b/src/libstddjb/ucharn_scan.c
index b544d0d..6a9b1fd 100644
--- a/src/libstddjb/ucharn_scan.c
+++ b/src/libstddjb/ucharn_scan.c
@@ -5,7 +5,7 @@
 
 size_t ucharn_scan (char const *s, char *key, size_t n)
 {
-  register unsigned int i = 0 ;
+  size_t i = 0 ;
   for (; i < n ; i++)
   {
     unsigned char c = fmtscan_num(s[2*i], 16) ;
diff --git a/src/libstddjb/ucharn_scan_little.c b/src/libstddjb/ucharn_scan_little.c
index b278dff..52fdd62 100644
--- a/src/libstddjb/ucharn_scan_little.c
+++ b/src/libstddjb/ucharn_scan_little.c
@@ -5,7 +5,7 @@
 
 size_t ucharn_scan_little (char const *s, char *key, size_t n)
 {
-  register size_t i = 0 ;
+  size_t i = 0 ;
   for (; i < n ; i++)
   {
     unsigned char c = fmtscan_num(s[(i<<1)+1], 16) ;
diff --git a/src/libstddjb/ucspi_get.c b/src/libstddjb/ucspi_get.c
index 916ae2a..b4572d1 100644
--- a/src/libstddjb/ucspi_get.c
+++ b/src/libstddjb/ucspi_get.c
@@ -1,7 +1,7 @@
 /* ISC license. */
 
 #include <errno.h>
-#include <skalibs/bytestr.h>
+#include <string.h>
 #include <skalibs/env.h>
 
 char const *ucspi_get (char const *s)
@@ -9,11 +9,11 @@ char const *ucspi_get (char const *s)
   char const *x = env_get("PROTO") ;
   if (x)
   {
-    unsigned int len = str_len(s) ;
-    unsigned int xlen = str_len(x) ;
+    size_t len = strlen(s) ;
+    size_t xlen = strlen(x) ;
     char tmp[len + xlen + 1] ;
-    byte_copy(tmp, xlen, x) ;
-    byte_copy(tmp + xlen, len + 1, s) ;
+    memcpy(tmp, x, xlen) ;
+    memcpy(tmp + xlen, s, len + 1) ;
     x = env_get(tmp) ;
     if (!x) errno = ENOENT ;
   }
diff --git a/src/libstddjb/unsanitize_read.c b/src/libstddjb/unsanitize_read.c
index 4d9e99d..d21cacd 100644
--- a/src/libstddjb/unsanitize_read.c
+++ b/src/libstddjb/unsanitize_read.c
@@ -2,8 +2,8 @@
 
 #include <sys/types.h>
 #include <errno.h>
-#include <skalibs/allreadwrite.h>
 #include <skalibs/error.h>
+#include <skalibs/allreadwrite.h>
 
 ssize_t unsanitize_read (ssize_t r)
 {
diff --git a/src/libstddjb/utc_from_localtm.c b/src/libstddjb/utc_from_localtm.c
index a5886f3..99b4470 100644
--- a/src/libstddjb/utc_from_localtm.c
+++ b/src/libstddjb/utc_from_localtm.c
@@ -1,11 +1,10 @@
 /* ISC license. */
 
-#include <sys/types.h>
 #include <time.h>
 #include <skalibs/uint64.h>
 #include <skalibs/djbtime.h>
 
-int utc_from_localtm (uint64 *uu, struct tm const *l)
+int utc_from_localtm (uint64_t *uu, struct tm const *l)
 {
   if (!ltm64_from_localtm(uu, l)) return 0 ;
   utc_from_ltm64(uu) ;
diff --git a/src/libstddjb/utc_from_ltm64.c b/src/libstddjb/utc_from_ltm64.c
index 788a539..ab2d153 100644
--- a/src/libstddjb/utc_from_ltm64.c
+++ b/src/libstddjb/utc_from_ltm64.c
@@ -5,8 +5,7 @@
 #include <skalibs/djbtime.h>
 #include "djbtime-internal.h"
 
-
-int utc_from_ltm64 (uint64 *u)
+int utc_from_ltm64 (uint64_t *u)
 {
 #ifdef SKALIBS_FLAG_CLOCKISTAI
   leapsecs_sub(u) ;
diff --git a/src/libstddjb/utc_from_sysclock.c b/src/libstddjb/utc_from_sysclock.c
index 979bb04..7310a10 100644
--- a/src/libstddjb/utc_from_sysclock.c
+++ b/src/libstddjb/utc_from_sysclock.c
@@ -8,7 +8,7 @@
 
 #include <skalibs/tai.h>
 
-int utc_from_sysclock (uint64 *u)
+int utc_from_sysclock (uint64_t *u)
 {
   tai_t t = { .x = *u + 10U } ;
   return utc_from_tai(u, &t) ;
@@ -16,7 +16,7 @@ int utc_from_sysclock (uint64 *u)
 
 #else
 
-int utc_from_sysclock (uint64 *u)
+int utc_from_sysclock (uint64_t *u)
 {
   (void)u ;
   return 1 ;
diff --git a/src/libstddjb/vbaprintf.c b/src/libstddjb/vbaprintf.c
index 1c23e8c..38bd331 100644
--- a/src/libstddjb/vbaprintf.c
+++ b/src/libstddjb/vbaprintf.c
@@ -1,8 +1,7 @@
 /* ISC license. */
 
-#include <sys/types.h>
-#include <stdarg.h>
 #include <stdio.h>
+#include <stdarg.h>
 #include <skalibs/stralloc.h>
 #include <skalibs/bufalloc.h>
 #include <skalibs/lolstdio.h>
@@ -17,8 +16,8 @@ int vbaprintf (bufalloc *ba, char const *format, va_list args)
     va_end(ugly) ;
   }
   if (r < 0) return r ;
-  if (!stralloc_readyplus(&ba->x, (size_t)r + 1)) return -1 ;
-  r = vsnprintf(ba->x.s + ba->x.len, (size_t)r + 1, format, args) ;
+  if (!stralloc_readyplus(&ba->x, r + 1)) return -1 ;
+  r = vsnprintf(ba->x.s + ba->x.len, r + 1, format, args) ;
   if (r > 0) ba->x.len += r ;
   return r ;
 }
diff --git a/src/libstddjb/vbprintf.c b/src/libstddjb/vbprintf.c
index 2f8c13b..52dfb9b 100644
--- a/src/libstddjb/vbprintf.c
+++ b/src/libstddjb/vbprintf.c
@@ -1,8 +1,7 @@
 /* ISC license. */
 
-#include <sys/types.h>
-#include <stdarg.h>
 #include <stdio.h>
+#include <stdarg.h>
 #include <skalibs/buffer.h>
 #include <skalibs/lolstdio.h>
 
@@ -17,8 +16,8 @@ int vbprintf (buffer *b, char const *format, va_list args)
   }
   if (r < 0) return r ;
   {
-    char buf[(size_t)r + 1] ;
-    r = vsnprintf(buf, (size_t)r + 1, format, args) ;
+    char buf[r+1] ;
+    r = vsnprintf(buf, r + 1, format, args) ;
     if (r < 0) return r ;
     if (buffer_put(b, buf, r) < r) return -1 ;
   }
diff --git a/src/libstddjb/wait_nointr.c b/src/libstddjb/wait_nointr.c
index 90d6412..4e7a17a 100644
--- a/src/libstddjb/wait_nointr.c
+++ b/src/libstddjb/wait_nointr.c
@@ -1,6 +1,5 @@
 /* ISC license. */
 
-#include <sys/types.h>
 #include <sys/wait.h>
 #include <errno.h>
 #include <skalibs/djbunix.h>
diff --git a/src/libstddjb/wait_pid_nohang.c b/src/libstddjb/wait_pid_nohang.c
index 11beed6..7b27bbe 100644
--- a/src/libstddjb/wait_pid_nohang.c
+++ b/src/libstddjb/wait_pid_nohang.c
@@ -1,16 +1,16 @@
 /* ISC license. */
 
-#include <sys/types.h>
+#include <sys/wait.h>
 #include <skalibs/djbunix.h>
 
 pid_t wait_pid_nohang (pid_t pid, int *wstat)
 {
   int w = 0 ;
-  register pid_t r = 0 ;
+  pid_t r = 0 ;
   while (r != pid)
   {
     r = wait_nohang(&w) ;
-    if (!r || (r == (pid_t)-1)) return (int)r ;
+    if (!r || (r == (pid_t)-1)) return r ;
   }
   *wstat = w ;
   return r ;
diff --git a/src/libstddjb/wait_pids_nohang.c b/src/libstddjb/wait_pids_nohang.c
index 3c52e6b..c13ddec 100644
--- a/src/libstddjb/wait_pids_nohang.c
+++ b/src/libstddjb/wait_pids_nohang.c
@@ -1,6 +1,6 @@
 /* ISC license. */
 
-#include <sys/types.h>
+#include <sys/wait.h>
 #include <skalibs/djbunix.h>
 
 int wait_pids_nohang (pid_t const *pids, unsigned int len, int *wstat)
@@ -8,10 +8,10 @@ int wait_pids_nohang (pid_t const *pids, unsigned int len, int *wstat)
   for (;;)
   {
     int w ;
-    register pid_t r = wait_nohang(&w) ;
+    pid_t r = wait_nohang(&w) ;
     if (!r || (r == (pid_t)-1)) return (int)r ;
     {
-      register unsigned int i = 0 ;
+      unsigned int i = 0 ;
       for (; i < len ; i++) if (r == pids[i]) break ;
       if (i < len)
       {
diff --git a/src/libstddjb/wait_reap.c b/src/libstddjb/wait_reap.c
index 7049b27..051b11e 100644
--- a/src/libstddjb/wait_reap.c
+++ b/src/libstddjb/wait_reap.c
@@ -4,7 +4,7 @@
 
 unsigned int wait_reap ()
 {
-  register unsigned int n = 0 ;
+  unsigned int n = 0 ;
   int wstat ;
   while (wait_nohang(&wstat) > 0) n++ ;
   return n ;
diff --git a/src/libstddjb/waitn.c b/src/libstddjb/waitn.c
index 0d01cd1..05d7f37 100644
--- a/src/libstddjb/waitn.c
+++ b/src/libstddjb/waitn.c
@@ -1,6 +1,6 @@
 /* ISC license. */
 
-#include <sys/types.h>
+#include <sys/wait.h>
 #include <skalibs/djbunix.h>
 
 int waitn (pid_t *pids, unsigned int n)
@@ -8,8 +8,8 @@ int waitn (pid_t *pids, unsigned int n)
   while (n)
   {
     int wstat ;
-    register unsigned int i = 0 ;
-    register pid_t pid = wait_nointr(&wstat) ;
+    unsigned int i = 0 ;
+    pid_t pid = wait_nointr(&wstat) ;
     if (pid < 0) return 0 ;
     for (; i < n ; i++) if (pid == pids[i]) break ;
     if (i < n) pids[i] = pids[--n] ;
diff --git a/src/libstddjb/waitn_reap.c b/src/libstddjb/waitn_reap.c
index 96a0c61..9f26b5d 100644
--- a/src/libstddjb/waitn_reap.c
+++ b/src/libstddjb/waitn_reap.c
@@ -1,6 +1,6 @@
 /* ISC license. */
 
-#include <sys/types.h>
+#include <sys/wait.h>
 #include <skalibs/djbunix.h>
 
 int waitn_reap (pid_t *pids, unsigned int len)
@@ -9,11 +9,11 @@ int waitn_reap (pid_t *pids, unsigned int len)
   while (len)
   {
     int w ;
-    register int r = wait_pids_nohang(pids, len, &w) ;
+    int r = wait_pids_nohang(pids, len, &w) ;
     if (r < 0) return r ;
     else if (!r) break ;
     pids[r-1] = pids[--len] ;
     n++ ;
   }
-  return (int)n ;
+  return n ;
 }
diff --git a/src/libstddjb/waitpid_nointr.c b/src/libstddjb/waitpid_nointr.c
index 8c6a65e..838359f 100644
--- a/src/libstddjb/waitpid_nointr.c
+++ b/src/libstddjb/waitpid_nointr.c
@@ -1,15 +1,13 @@
 /* ISC license. */
 
-#include <sys/types.h>
 #include <sys/wait.h>
 #include <errno.h>
 #include <skalibs/djbunix.h>
 
 pid_t waitpid_nointr (pid_t pid, int *wstat, int flags)
 {
-  register pid_t r ;
-  do
-    r = waitpid(pid, wstat, flags) ;
+  pid_t r ;
+  do r = waitpid(pid, wstat, flags) ;
   while ((r == (pid_t)-1) && (errno == EINTR)) ;
   return r ;
 }