[thirdparty/glibc.git] / stdio-common / bug21.c

#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"
Commit	Line	Data
26e21e75	1	#include <stdio.h>
2084e7ca	2	#include <libc-internal.h>
26e21e75 UD	3
	4	static int
	5	do_test (void)
	6	{
	7	static const char buf[] = " ";
	8	char *str;
	9
2084e7ca JM	10	/* GCC in C99 mode treats %a as the C99 format expecting float *,
	11	but glibc with _GNU_SOURCE treats %as as the GNU allocation
	12	extension, so resulting in "warning: format '%a' expects argument
	13	of type 'float ', but argument 3 has type 'char *'". This
	14	applies to the other %as, %aS and %a[] formats below as well. */
	15	DIAG_PUSH_NEEDS_COMMENT;
	16	DIAG_IGNORE_NEEDS_COMMENT (4.9, "-Wformat");
26e21e75	17	int r = sscanf (buf, "%as", &str);
2084e7ca	18	DIAG_POP_NEEDS_COMMENT;
26e21e75 UD	19	printf ("%d %p\n", r, str);
	20
	21	return r != -1 \|\| str != NULL;
	22	}
	23
	24	#define TEST_FUNCTION do_test ()
	25	#include "../test-skeleton.c"