gcc/testsuite/c-c++-common/Wlogical-not-parentheses-1.c

   1 /* PR c/77292 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-Wlogical-not-parentheses" } */
   4
   5  /* Test that we don't warn if rhs is a comparison or a logical op.  */
   6
   7 int
   8 foo (int a, int b)
   9 {
  10   int r = 0;
  11   r += !a == (a < b);
  12   r += !a == (a > b);
  13   r += !a == (a >= b);
  14   r += !a == (a <= b);
  15   r += !a == (a != b);
  16   r += !a == (a == b);
  17   r += !a == (a || b);
  18   r += !a == (a && b);
  19   r += !a == (!b);
  20
  21   r += !a == (a ^ b); /* { dg-warning "logical not is only applied to the left hand side of comparison" } */
  22   r += !a == (a | b); /* { dg-warning "logical not is only applied to the left hand side of comparison" } */
  23   r += !a == (a & b); /* { dg-warning "logical not is only applied to the left hand side of comparison" } */
  24
  25   return r;
  26 }