1// RUN: %clang_cc1 %s -verify
2
3typedef signed char BOOL;
4#define YES __objc_yes
5#define NO __objc_no
6
7BOOL B;
8
9void test() {
10  int r;
11  r = B > 0;
12  r = B > 1; // expected-warning {{result of comparison of constant 1 with expression of type 'BOOL' is always false, as the only well defined values for 'BOOL' are YES and NO}}
13  r = B < 1;
14  r = B < 0; // expected-warning {{result of comparison of constant 0 with expression of type 'BOOL' is always false, as the only well defined values for 'BOOL' are YES and NO}}
15  r = B >= 0; // expected-warning {{result of comparison of constant 0 with expression of type 'BOOL' is always true, as the only well defined values for 'BOOL' are YES and NO}}
16  r = B <= 0;
17
18  r = B > YES; // expected-warning {{result of comparison of constant YES with expression of type 'BOOL' is always false, as the only well defined values for 'BOOL' are YES and NO}}
19  r = B > NO;
20  r = B < NO; // expected-warning {{result of comparison of constant NO with expression of type 'BOOL' is always false, as the only well defined values for 'BOOL' are YES and NO}}
21  r = B < YES;
22  r = B >= NO; // expected-warning {{result of comparison of constant NO with expression of type 'BOOL' is always true, as the only well defined values for 'BOOL' are YES and NO}}
23  r = B <= NO;
24}
25