modernc.org/ccgo/v3@v3.16.14/lib/testdata/gcc-9.1.0/gcc/testsuite/gcc.c-torture/execute/pr64979.c (about)

     1  /* PR target/64979 */
     2  
     3  #include <stdarg.h>
     4  
     5  void __attribute__((noinline, noclone))
     6  bar (int x, va_list *ap)
     7  {
     8    if (ap)
     9      {
    10        int i;
    11        for (i = 0; i < 10; i++)
    12  	if (i != va_arg (*ap, int))
    13  	  __builtin_abort ();
    14        if (va_arg (*ap, double) != 0.5)
    15  	__builtin_abort ();
    16      }
    17  }
    18  
    19  void __attribute__((noinline, noclone))
    20  foo (int x, ...)
    21  {
    22    va_list ap;
    23    int n;
    24  
    25    va_start (ap, x);
    26    n = va_arg (ap, int);
    27    bar (x, (va_list *) ((n == 0) ? ((void *) 0) : &ap));
    28    va_end (ap);
    29  }
    30  
    31  int
    32  main ()
    33  {
    34    foo (100, 1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0.5);
    35    return 0;
    36  }