gomp-20050608-branch/gcc/testsuite/gcc.c-torture/execute/20020412-1.c

   1 /* PR c/3711
   2    This testcase ICEd on IA-32 at -O0 and was miscompiled otherwise,
   3    because std_expand_builtin_va_arg didn't handle variable size types.  */
   4
   5 #include <stdarg.h>
   6
   7 extern void abort (void);
   8 extern void exit (int);
   9
  10 void bar (int c)
  11 {
  12   static int d = '0';
  13
  14   if (c != d++)
  15     abort ();
  16   if (c < '0' || c > '9')
  17     abort ();
  18 }
  19
  20 void foo (int size, ...)
  21 {
  22   struct
  23   {
  24     char x[size];
  25   } d;
  26   va_list ap;
  27   int i;
  28
  29   va_start (ap, size);
  30   d = va_arg (ap, typeof (d));
  31   for (i = 0; i < size; i++)
  32     bar (d.x[i]);
  33   d = va_arg (ap, typeof (d));
  34   for (i = 0; i < size; i++)
  35     bar (d.x[i]);
  36   va_end (ap);
  37 }
  38
  39 int main (void)
  40 {
  41   int z = 5;
  42   struct { char a[z]; } x, y;
  43
  44   x.a[0] = '0';
  45   x.a[1] = '1';
  46   x.a[2] = '2';
  47   x.a[3] = '3';
  48   x.a[4] = '4';
  49   y.a[0] = '5';
  50   y.a[1] = '6';
  51   y.a[2] = '7';
  52   y.a[3] = '8';
  53   y.a[4] = '9';
  54   foo (z, x, y);
  55   exit (0);
  56 }