gcc/testsuite/gcc.dg/Wparentheses-5.c

   1 /* Test operation of -Wparentheses.  Precedence warnings.  && inside
   2    ||.  */
   3 /* Origin: Joseph Myers <jsm@polyomino.org.uk> */
   4
   5 /* { dg-do compile } */
   6 /* { dg-options "-Wparentheses" } */
   7
   8 int foo (int);
   9
  10 int
  11 bar (int a, int b, int c)
  12 {
  13   foo (a && b || c); /* { dg-warning "parentheses" "correct warning" } */
  14   foo ((a && b) || c);
  15   foo (a && (b || c));
  16   foo (1 && 2 || c); /* { dg-warning "parentheses" "correct warning" } */
  17   foo ((1 && 2) || c);
  18   foo (1 && (2 || c));
  19   foo (1 && 2 || 3); /* { dg-warning "parentheses" "correct warning" } */
  20   foo ((1 && 2) || 3);
  21   foo (1 && (2 || 3));
  22   foo (a || b && c); /* { dg-warning "parentheses" "correct warning" } */
  23   foo ((a || b) && c);
  24   foo (a || (b && c));
  25   foo (1 || 2 && c); /* { dg-warning "parentheses" "correct warning" } */
  26   foo ((1 || 2) && c);
  27   foo (1 || (2 && c));
  28   foo (1 || 2 && 3); /* { dg-warning "parentheses" "correct warning" } */
  29   foo ((1 || 2) && 3);
  30   foo (1 || (2 && 3));
  31 }