gcc/testsuite/c-c++-common/Wunused-var-16.c

   1 /* PR c++/78949 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-Wunused -fdump-tree-optimized" } */
   4 /* { dg-additional-options "-fno-common" { target hppa*-*-hpux* } } */
   5
   6 typedef unsigned char V __attribute__((vector_size(16)));
   7 V v;
   8
   9 void
  10 foo ()
  11 {
  12   V y = {};
  13   V x = {};     // { dg-bogus "set but not used" }
  14   y &= ~x;
  15   v = y;
  16 }
  17
  18 /* { dg-final { scan-tree-dump-not " ~0" "optimized" } } */