gcc/testsuite/gcc.dg/binop-notand4a.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-optimized" } */
   3
   4 int
   5 foo (unsigned char a, _Bool b)
   6 {
   7   return (!a & a) | (b & !b);
   8 }
   9
  10 /* As long as comparisons aren't boolified and casts from boolean-types
  11    aren't preserved, the folding of  X & !X to zero fails.  */
  12 /* { dg-final { scan-tree-dump-times "return 0" 1 "optimized" { xfail *-*-* } } } */