9740f9f0b6
Some warnings in -Wtautological-compare subgroups are DefaultIgnore. Adding this group to -Wmost, which is part of -Wall, will aid in their discoverability. Differential Revision: https://reviews.llvm.org/D69292
14 lines
577 B
C++
14 lines
577 B
C++
// RUN: %clang_cc1 -fsyntax-only -verify -Wtautological-bitwise-compare %s
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// RUN: %clang_cc1 -fsyntax-only -verify -Wall -Wno-unused %s
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void test(int x) {
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bool b1 = (8 & x) == 3;
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// expected-warning@-1 {{bitwise comparison always evaluates to false}}
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bool b2 = x | 5;
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// expected-warning@-1 {{bitwise or with non-zero value always evaluates to true}}
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bool b3 = (x | 5);
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// expected-warning@-1 {{bitwise or with non-zero value always evaluates to true}}
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bool b4 = !!(x | 5);
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// expected-warning@-1 {{bitwise or with non-zero value always evaluates to true}}
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}
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