gcc/testsuite/gcc.dg/pr69802.c

   1 /* PR tree-optimization/69802 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O2 -Wall" } */
   4
   5 struct S { unsigned f : 1; };
   6 int a, d;
   7
   8 int
   9 foo (void)
  10 {
  11   unsigned b = 0;
  12   struct S c;
  13   d = ((1 && b) < c.f) & c.f;   /* { dg-warning "is used uninitialized" } */
  14   return a;
  15 }
  16
  17 int
  18 bar (_Bool c)
  19 {
  20   unsigned b = 0;
  21   d = ((1 && b) < c) & c;
  22   return a;
  23 }