fortify-headers

commit 9880d5864bfa5ae3fa6ca7b739953ac5f74524be
parent 578b693300171edfbbefb4b14f1bc9bd46f94a1f
Author: Natanael Copa <ncopa@alpinelinux.org>
Date:   Thu, 14 Jul 2016 16:45:11 +0200

Only include limits.h when actually used

The __extension__ seems to trigger a bug in gcc when there are no
identifier specified afterwards.

Testcase:
  echo "#include <stdlib.h>" > try.c && cc -O0 -c try.c
  try.c:2:0: error: expected identifier or '(' at end of input

With -O2 it does not happen.

We work around this by only pulling in limits.h when we actually need the
PATH_MAX.

Signed-off-by: Natanael Copa <ncopa@alpinelinux.org>

Diffstat:
M
include/stdlib.h
 | 
2
+-

1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/stdlib.h b/include/stdlib.h
@@ -19,12 +19,12 @@
 __extension__
 #include_next <stdlib.h>
 
+#if defined(_FORTIFY_SOURCE) && _FORTIFY_SOURCE > 0 && defined(__OPTIMIZE__) && __OPTIMIZE__ > 0
 #if defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
 __extension__
 #include_next <limits.h>
 #endif
 
-#if defined(_FORTIFY_SOURCE) && _FORTIFY_SOURCE > 0 && defined(__OPTIMIZE__) && __OPTIMIZE__ > 0
 #include "fortify-headers.h"
 
 #ifdef __cplusplus