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/* Copyright (C) 2001  Free Software Foundation.

   Ensure all expected transformations of builtin fprintf occur and

   that we honor side effects in the arguments.

   Written by Kaveh R. Ghazi, 1/7/2001.  */

#include <stdio.h>

extern int fprintf_unlocked (FILE *, const char *, ...);

extern void abort(void);

void

main_test (void)

{

  FILE *s_array[] = {stdout, NULL}, **s_ptr = s_array;

  const char *const s1 = "hello world";

  const char *const s2[] = { s1, 0 }, *const*s3;

  fprintf (*s_ptr, "");

  fprintf (*s_ptr, "%s", "");

  fprintf (*s_ptr, "%s", "hello");

  fprintf (*s_ptr, "%s", "\n");

  fprintf (*s_ptr, "%s", *s2);

  s3 = s2;

  fprintf (*s_ptr, "%s", *s3++);

  if (s3 != s2+1 || *s3 != 0)

    abort();

  s3 = s2;

  fprintf (*s_ptr++, "%s", *s3++);

  if (s3 != s2+1 || *s3 != 0 || s_ptr != s_array+1 || *s_ptr != 0)

    abort();

  s_ptr = s_array;

  fprintf (*s_ptr, "%c", '\n');

  fprintf (*s_ptr, "%c", **s2);

  s3 = s2;

  fprintf (*s_ptr, "%c", **s3++);

  if (s3 != s2+1 || *s3 != 0)

    abort();

  s3 = s2;

  fprintf (*s_ptr++, "%c", **s3++);

  if (s3 != s2+1 || *s3 != 0 || s_ptr != s_array+1 || *s_ptr != 0)

    abort();

  s_ptr = s_array;

  fprintf (*s_ptr++, "hello world");

  if (s_ptr != s_array+1 || *s_ptr != 0)

    abort();

  s_ptr = s_array;

  fprintf (*s_ptr, "\n");

  /* Test at least one instance of the __builtin_ style.  We do this

     to ensure that it works and that the prototype is correct.  */

  __builtin_fprintf (*s_ptr, "%s", "hello world\n");

  /* Check the unlocked style, these evaluate to nothing to avoid

     problems on systems without the unlocked functions.  */

  fprintf_unlocked (*s_ptr, "");

  __builtin_fprintf_unlocked (*s_ptr, "");

  fprintf_unlocked (*s_ptr, "%s", "");

  __builtin_fprintf_unlocked (*s_ptr, "%s", "");

}