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  }