1 // RUN: %clang_cc1 %s -verify -fsyntax-only -Wno-logical-not-parentheses
2
f(_Atomic (int)a,_Atomic (int)b)3 void f(_Atomic(int) a, _Atomic(int) b) {
4 if (a > b) {} // no warning
5 if (a < b) {} // no warning
6 if (a >= b) {} // no warning
7 if (a <= b) {} // no warning
8 if (a == b) {} // no warning
9 if (a != b) {} // no warning
10
11 if (a == 0) {} // no warning
12 if (a > 0) {} // no warning
13 if (a > 1) {} // no warning
14 if (a > 2) {} // no warning
15
16 if (!a > 0) {} // no warning
17 if (!a > 1) {} // expected-warning {{comparison of constant 1 with boolean expression is always false}}
18 if (!a > 2) {} // expected-warning {{comparison of constant 2 with boolean expression is always false}}
19 if (!a > b) {} // no warning
20 if (!a > -1) {} // expected-warning {{comparison of constant -1 with boolean expression is always true}}
21 }
22
23 typedef _Atomic(int) Ty;
PR23638(Ty * a)24 void PR23638(Ty *a) {
25 if (*a == 1) {} // no warning
26 }
27