gcc/testsuite/gcc.dg/Wunused-value-2.c

   1 /* Test -Wunused-value.  Bug 30729.  */
   2 /* { dg-do compile } */
   3 /* { dg-options "-Wunused-value" } */
   4 /* Make sure va_arg does not cause a value computed is not used warning
   5    because it has side effects.   */
   6 #include <stdarg.h>
   7
   8 int f(int t, ...)
   9 {
  10   va_list a;
  11   va_start (a, t);
  12   va_arg(a, int);/* { dg-bogus "value computed is not used" } */
  13   int t1 = va_arg(a, int);
  14   va_end(a);
  15   return t1;
  16 }
  17
  18