skalibs

commit 191d21f2acde7c2fa3003972a8b04bc080d64e2d
parent 57459439db1f48dbbace1ab059117798fa26d203
Author: Laurent Bercot <ska-skaware@skarnet.org>
Date:   Thu,  3 May 2018 07:17:05 +0000

 Add nullispointer sysdep

Diffstat:
M
configure
 | 
1
+
A
src/sysdeps/trynullispointer.c
 | 
12
++++++++++++

2 files changed, 13 insertions(+), 0 deletions(-)
diff --git 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
@@ -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 ;
+}