old-autovect-branch/gcc/testsuite/gcc.c-torture/execute/builtins/printf.c

   1 /* Copyright (C) 2000  Free Software Foundation.
   2
   3    Ensure all expected transformations of builtin printf occur and
   4    that we honor side effects in the arguments.
   5
   6    Written by Kaveh R. Ghazi, 12/4/2000.  */
   7
   8 extern int printf (const char *, ...);
   9 extern int printf_unlocked (const char *, ...);
  10 extern void abort(void);
  11
  12 void
  13 main_test (void)
  14 {
  15   const char *const s1 = "hello world";
  16   const char *const s2[] = { s1, 0 }, *const*s3;
  17
  18   printf ("%s\n", "hello");
  19   printf ("%s\n", *s2);
  20   s3 = s2;
  21   printf ("%s\n", *s3++);
  22   if (s3 != s2+1 || *s3 != 0)
  23     abort();
  24
  25   printf ("%c", '\n');
  26   printf ("%c", **s2);
  27   s3 = s2;
  28   printf ("%c", **s3++);
  29   if (s3 != s2+1 || *s3 != 0)
  30     abort();
  31
  32   printf ("");
  33   printf ("%s", "");
  34   printf ("\n");
  35   printf ("%s", "\n");
  36   printf ("hello world\n");
  37   printf ("%s", "hello world\n");
  38
  39   /* Test at least one instance of the __builtin_ style.  We do this
  40      to ensure that it works and that the prototype is correct.  */
  41   __builtin_printf ("%s\n", "hello");
  42   /* These builtin stubs are called by __builtin_printf, ensure their
  43      prototypes are set correctly too.  */
  44   __builtin_putchar ('\n');
  45   __builtin_puts ("hello");
  46   /* Check the unlocked style, these evaluate to nothing to avoid
  47      problems on systems without the unlocked functions.  */
  48   printf_unlocked ("");
  49   __builtin_printf_unlocked ("");
  50   printf_unlocked ("%s", "");
  51   __builtin_printf_unlocked ("%s", "");
  52 }