| // RUN: %clang_cc1 -Wparentheses -fsyntax-only -verify %s |
| // RUN: %clang_cc1 -Wparentheses -fixit %s -o - | %clang_cc1 -Wparentheses -Werror - |
| |
| // Test the various warnings under -Wparentheses |
| void if_assign(void) { |
| int i; |
| if (i = 4) {} // expected-warning {{assignment as a condition}} \ |
| // expected-note{{use '==' to turn this assignment into an equality comparison}} \ |
| // expected-note{{place parentheses around the assignment to silence this warning}} |
| if ((i = 4)) {} |
| } |
| |
| void bitwise_rel(unsigned i) { |
| (void)(i & 0x2 == 0); // expected-warning {{& has lower precedence than ==}} \ |
| // expected-note{{place parentheses around the & expression to evaluate it first}} \ |
| // expected-note{{place parentheses around the == expression to silence this warning}} |
| (void)(0 == i & 0x2); // expected-warning {{& has lower precedence than ==}} \ |
| // expected-note{{place parentheses around the & expression to evaluate it first}} \ |
| // expected-note{{place parentheses around the == expression to silence this warning}} |
| (void)(i & 0xff < 30); // expected-warning {{& has lower precedence than <}} \ |
| // expected-note{{place parentheses around the & expression to evaluate it first}} \ |
| // expected-note{{place parentheses around the < expression to silence this warning}} |
| (void)((i & 0x2) == 0); |
| (void)(i & (0x2 == 0)); |
| // Eager logical op |
| (void)(i == 1 | i == 2 | i == 3); |
| (void)(i != 1 & i != 2 & i != 3); |
| |
| (void)(i || i && i); // expected-warning {{'&&' within '||'}} \ |
| // expected-note {{place parentheses around the '&&' expression to silence this warning}} |
| (void)(i || i && "w00t"); // no warning. |
| (void)("w00t" && i || i); // no warning. |
| (void)(i || i && "w00t" || i); // expected-warning {{'&&' within '||'}} \ |
| // expected-note {{place parentheses around the '&&' expression to silence this warning}} |
| (void)(i || "w00t" && i || i); // expected-warning {{'&&' within '||'}} \ |
| // expected-note {{place parentheses around the '&&' expression to silence this warning}} |
| (void)(i && i || 0); // no warning. |
| (void)(0 || i && i); // no warning. |
| } |