gcc/testsuite/c-c++-common/Wint-in-bool-context.c

   1 /* PR c++/77434 */
   2 /* { dg-options "-Wint-in-bool-context" } */
   3 /* { dg-do compile } */
   4
   5 enum truth { yes, no, maybe };
   6
   7 int foo (int a, int b)
   8 {
   9   if (a > 0 && a <= (b == 1) ? 1 : 2) /* { dg-warning "boolean context" } */
  10     return 1;
  11
  12   if (a > 0 && a <= (b == 2) ? 1 : 1) /* { dg-bogus "boolean context" } */
  13     return 2;
  14
  15   if (a > 0 && a <= (b == 3) ? 0 : 2) /* { dg-warning "boolean context" } */
  16     return 3;
  17
  18   if (a == b ? 0 : 0) /* { dg-bogus "boolean context" } */
  19     return 4;
  20
  21   if (a == ((b ? 2|4 : 1) & 3 ? 0 : 2)) /* { dg-bogus "boolean context" } */
  22     return 5;
  23
  24   if (a ? 1 : 1+1) /* { dg-warning "boolean context" } */
  25     return 6;
  26
  27   if (b ? 1+1 : 1) /* { dg-warning "boolean context" } */
  28     return 7;
  29
  30   for (a = 0; 1 << a; a++); /* { dg-warning "boolean context" } */
  31
  32   if (yes || no || maybe) /* { dg-warning "boolean context" "" { target c++ } } */
  33     return 8;
  34
  35   if (yes || no) /* { dg-bogus "boolean context" } */
  36     return 9;
  37
  38   return 0;
  39 }