# -fstack-protector-all doesn't always work for some GCC versions
# and/or platforms, so we test if we can. If it's not supported
- # on a give platform gcc will emit a warning so we use -Werror.
+ # on a given platform gcc will emit a warning so we use -Werror.
if test "x$use_stack_protector" = "x1"; then
for t in -fstack-protector-all -fstack-protector; do
AC_MSG_CHECKING(if $CC supports $t)
LDFLAGS="$LDFLAGS $t -Werror"
AC_LINK_IFELSE(
[AC_LANG_SOURCE([
-#include <stdlib.h>
-int main(void){return 0;}
+#include <stdio.h>
+int main(void){char x[[256]]; snprintf(x, sizeof(x), "XXX"); return 0;}
])],
[ AC_MSG_RESULT(yes)
CFLAGS="$saved_CFLAGS $t"
AC_MSG_CHECKING(if $t works)
AC_RUN_IFELSE(
[AC_LANG_SOURCE([
-#include <stdlib.h>
-int main(void){exit(0);}
+#include <stdio.h>
+int main(void){char x[[256]]; snprintf(x, sizeof(x), "XXX"); return 0;}
])],
[ AC_MSG_RESULT(yes)
break ],