gcc/testsuite/gcc.dg/uninit-pr65686.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -Wall -fdump-tree-optimized" } */
   3
   4 typedef unsigned mytype;
   5
   6 struct S {
   7     mytype *pu;
   8 };
   9
  10 mytype f(struct S *e)
  11 {
  12   mytype x;  /* { dg-bogus { "uninitialized" } } */
  13   if(&x != e->pu)
  14     __builtin_memcpy(&x, e->pu, sizeof(unsigned));
  15   return x;
  16 }
  17
  18 /* { dg-final { scan-tree-dump-not "if" "optimized" } } */