33 lines
1.3 KiB
C
33 lines
1.3 KiB
C
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// RUN: %clang_cc1 -x c -fsyntax-only -verify -Wtautological-constant-compare %s
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// RUN: %clang_cc1 -x c -fsyntax-only -verify %s
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// RUN: %clang_cc1 -x c++ -fsyntax-only -verify -Wtautological-constant-compare %s
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// RUN: %clang_cc1 -x c++ -fsyntax-only -verify %s
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#define ONE 1
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#define TWO 2
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#define TERN(c, l, r) c ? l : r
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#ifdef __cplusplus
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typedef bool boolean;
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#else
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typedef _Bool boolean;
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#endif
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void test(boolean a) {
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boolean r;
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r = a ? (1) : TWO;
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r = a ? 3 : TWO; // expected-warning {{converting the result of '?:' with integer constants to a boolean always evaluates to 'true'}}
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r = a ? -2 : 0;
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r = a ? 3 : -2; // expected-warning {{converting the result of '?:' with integer constants to a boolean always evaluates to 'true'}}
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r = a ? 0 : TWO;
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r = a ? 3 : ONE; // expected-warning {{converting the result of '?:' with integer constants to a boolean always evaluates to 'true'}}
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r = a ? ONE : 0;
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r = a ? 0 : -0;
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r = a ? 1 : 0;
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r = a ? ONE : 0;
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r = a ? ONE : ONE;
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r = TERN(a, 4, 8); // expected-warning {{converting the result of '?:' with integer constants to a boolean always evaluates to 'true'}}
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r = TERN(a, -1, -8); // expected-warning {{converting the result of '?:' with integer constants to a boolean always evaluates to 'true'}}
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}
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