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glibc/stdio-common/bug21.c
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#include <stdio.h> | |
#include <libc-internal.h> | |
static int | |
do_test (void) | |
{ | |
static const char buf[] = " "; | |
char *str; | |
/* GCC in C99 mode treats %a as the C99 format expecting float *, | |
but glibc with _GNU_SOURCE treats %as as the GNU allocation | |
extension, so resulting in "warning: format '%a' expects argument | |
of type 'float *', but argument 3 has type 'char **'". This | |
applies to the other %as, %aS and %a[] formats below as well. */ | |
DIAG_PUSH_NEEDS_COMMENT; | |
DIAG_IGNORE_NEEDS_COMMENT (4.9, "-Wformat"); | |
int r = sscanf (buf, "%as", &str); | |
DIAG_POP_NEEDS_COMMENT; | |
printf ("%d %p\n", r, str); | |
return r != -1 || str != NULL; | |
} | |
#define TEST_FUNCTION do_test () | |
#include "../test-skeleton.c" |