gcc/testsuite/gcc.dg/pr101170.c

   1 /* PR middle-end/101170 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O2 -g" } */
   4
   5 #include <stdarg.h>
   6
   7 struct S { int a; int b[4]; } s;
   8 va_list ap;
   9 int i;
  10 long long l;
  11
  12 struct S
  13 foo (int x)
  14 {
  15   struct S a = {};
  16   do
  17     if (x)
  18       return a;
  19   while (1);
  20 }
  21
  22 __attribute__((noipa)) void
  23 bar (void)
  24 {
  25   for (; i; i++)
  26     l |= va_arg (ap, long long) << s.b[i];
  27   if (l)
  28     foo (l);
  29 }
  30
  31 void
  32 baz (int v, ...)
  33 {
  34   va_start (ap, v);
  35   bar ();
  36   va_end (ap);
  37 }