maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity
llvm-project/clang/test/Sema/atomic-compare.c

22 lines
818 B
C
Raw Normal View History

Sema: Handle C11 atomics when diagnosing out of range comparisons This fixes a couple of asserts when analyzing comparisons involving C11 atomics that were uncovered by r205608 when we extended the applicability of -Wtautological-constant-out-of-range-compare. llvm-svn: 213573
2014-07-22 02:01:53 +08:00
// RUN: %clang_cc1 %s -verify -fsyntax-only
void f(_Atomic(int) a, _Atomic(int) b) {
if (a > b) {} // no warning
if (a < b) {} // no warning
if (a >= b) {} // no warning
if (a <= b) {} // no warning
if (a == b) {} // no warning
if (a != b) {} // no warning
if (a == 0) {} // no warning
if (a > 0) {} // no warning
if (a > 1) {} // no warning
if (a > 2) {} // no warning
if (!a > 0) {} // no warning
if (!a > 1) {} // expected-warning {{comparison of constant 1 with boolean expression is always false}}
if (!a > 2) {} // expected-warning {{comparison of constant 2 with boolean expression is always false}}
if (!a > b) {} // no warning
if (!a > -1) {} // expected-warning {{comparison of constant -1 with boolean expression is always true}}
}