1 files changed, 8 insertions, 1 deletions
diff --git a/src/libstddjb/cdb_free.c b/src/libstddjb/cdb_free.c
index 04ebf3e..d4250ec 100644
--- a/src/libstddjb/cdb_free.c
+++ b/src/libstddjb/cdb_free.c
@@ -1,10 +1,17 @@
 /* ISC license. */
 
 #include <sys/mman.h>
+#include <errno.h>
+
 #include <skalibs/cdb.h>
 
 extern void cdb_free (struct cdb *c)
 {
-  if (c->map) munmap(c->map, c->size) ;
+  if (c->map)
+  {
+    int e = errno ;
+    munmap(c->map, c->size) ;
+    errno = e ;
+  }
   *c = cdb_zero ;
 }