gcc/testsuite/gcc.dg/auto-init-unused-1.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O -ftrivial-auto-var-init=zero -fdump-tree-ssa" } */
   3
   4 int a;
   5 int foo (void);
   6 int bar (void);
   7
   8 void
   9 baz (void)
  10 {
  11   int *b[6];
  12   if (foo ())
  13     a |= bar ();
  14 }
  15
  16 /* { dg-final { scan-tree-dump-not "DEFERRED_INIT" "ssa" } } */