gcc/testsuite/gcc.dg/store_merging_12.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -Wall" } */
   3
   4 struct S { unsigned int b1:1, b2:1, b3:1, b4:1, b5:1, b6:27; };
   5 void bar (struct S *);
   6 void foo (int x)
   7 {
   8   struct S s;
   9   s.b2 = 1; s.b3 = 0; s.b4 = 1; s.b5 = 0; s.b1 = x; s.b6 = x;   /* { dg-bogus "is used uninitialized in this function" } */
  10   bar (&s);
  11 }