| // RUN: %clang_cc1 -fsyntax-only -verify -Wtautological-compare %s |
| |
| #define mydefine 2 |
| |
| void f(int x) { |
| if ((8 & x) == 3) {} // expected-warning {{bitwise comparison always evaluates to false}} |
| if ((x & 8) == 4) {} // expected-warning {{bitwise comparison always evaluates to false}} |
| if ((x & 8) != 4) {} // expected-warning {{bitwise comparison always evaluates to true}} |
| if ((2 & x) != 4) {} // expected-warning {{bitwise comparison always evaluates to true}} |
| if ((x | 4) == 3) {} // expected-warning {{bitwise comparison always evaluates to false}} |
| if ((x | 3) != 4) {} // expected-warning {{bitwise comparison always evaluates to true}} |
| if ((5 | x) != 3) {} // expected-warning {{bitwise comparison always evaluates to true}} |
| if ((x & 0x15) == 0x13) {} // expected-warning {{bitwise comparison always evaluates to false}} |
| if ((0x23 | x) == 0x155){} // expected-warning {{bitwise comparison always evaluates to false}} |
| |
| if ((x & 8) == 8) {} |
| if ((x & 8) != 8) {} |
| if ((x | 4) == 4) {} |
| if ((x | 4) != 4) {} |
| |
| if ((x & 9) == 8) {} |
| if ((x & 9) != 8) {} |
| if ((x | 4) == 5) {} |
| if ((x | 4) != 5) {} |
| |
| if ((x & mydefine) == 8) {} |
| if ((x | mydefine) == 4) {} |
| } |
