Add nullispointer sysdep

2 files changed, 13 insertions, 0 deletions

diff --git a/configure b/configure
index f785a63..3959c9a 100755
--- a/configure
+++ b/configure
@@ -503,6 +503,7 @@ EOF
   rm -f tryendianness
 
   trytypes
+  choose clr nullispointer NULLISPOINTER 'a pointer-typed NULL'
   choose clr accept4 ACCEPT4 'accept4()'
   choose clr ancilautoclose ANCILAUTOCLOSE 'auto-close after fd-passing'
   choose c cmsgcloexec CMSGCLOEXEC 'MSG_CMSG_CLOEXEC'
diff --git a/src/sysdeps/trynullispointer.c b/src/sysdeps/trynullispointer.c
new file mode 100644
index 0000000..cbb3340
--- /dev/null
+++ b/src/sysdeps/trynullispointer.c
@@ -0,0 +1,12 @@
+/* ISC license. */
+
+/* Explanation: http://www.openwall.com/lists/musl/2013/01/09/13 */
+
+#include <stddef.h>
+
+int main (void)
+{
+  char s[1][1+(int)NULL] ;
+  int i = 0 ;
+  return sizeof s[i++], !i ;
+}