/* Test case by Joseph S. Myers <jsm28@cam.ac.uk>.  */

#undef __USE_STRING_INLINES

#define __USE_STRING_INLINES

#include <string.h>

#include <stdlib.h>

#include <stdio.h>

#include <libc-diag.h>

int

main (void)

{

  const char *a = "abc";

  const char *b = a;

  DIAG_PUSH_NEEDS_COMMENT;

  /* GCC 9 correctly warns that this call to strspn is useless.  That

     is deliberate; this test is verifying that a side effect in an

     argument still occurs when the call itself is useless and could

     be optimized to return a constant.  */

  DIAG_IGNORE_NEEDS_COMMENT (9, "-Wunused-value");

  strspn (b++, "");

  DIAG_POP_NEEDS_COMMENT;

  if (b != a + 1)

    return 1;

  return 0;

}