gcc/testsuite/gcc.dg/union-2.c

   1 /* This used to segfault on SPARC 64-bit at runtime because
   2    the stack pointer was clobbered by the function call.   */
   3
   4 /* { dg-do run } */
   5
   6 #include <stdarg.h>
   7
   8 union U
   9 {
  10   long l1[2];
  11 };
  12
  13 union U u;
  14
  15 void foo (int z, ...)
  16 {
  17   int i;
  18   va_list ap;
  19   va_start(ap,z);
  20   i = va_arg(ap, int);
  21   va_end(ap);
  22 }
  23
  24 int main(void)
  25 {
  26   foo (1, 1, 1, 1, 1, u);
  27   return 0;
  28 }