derek.holloway
7502bf64a4
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78 lines
1.9 KiB
C
78 lines
1.9 KiB
C
// RUN: %clang_cc1 -triple=x86_64-pc-linux-gnu -fsyntax-only -verify -Wsign-compare %s
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// RUN: %clang_cc1 -triple=x86_64-pc-win32 -fsyntax-only -verify -Wsign-compare %s
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// RUN: %clang_cc1 -x c++ -triple=x86_64-pc-linux-gnu -fsyntax-only -verify -Wsign-compare %s
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// RUN: %clang_cc1 -x c++ -triple=x86_64-pc-win32 -fsyntax-only -verify -Wsign-compare %s
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// Check that -Wsign-compare is off by default.
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// RUN: %clang_cc1 -triple=x86_64-pc-linux-gnu -fsyntax-only -verify -DSILENCE %s
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#ifdef SILENCE
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// expected-no-diagnostics
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#endif
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enum PosEnum {
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A_a = 0,
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A_b = 1,
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A_c = 10
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};
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static const int message[] = {0, 1};
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int test_pos(enum PosEnum a) {
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if (a < 2)
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return 0;
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// No warning, except in Windows C mode, where PosEnum is 'int' and it can
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// take on any value according to the C standard.
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#if !defined(SILENCE) && defined(_WIN32) && !defined(__cplusplus)
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// expected-warning@+2 {{comparison of integers of different signs}}
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#endif
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if (a < 2U)
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return 0;
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unsigned uv = 2;
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#if !defined(SILENCE) && defined(_WIN32) && !defined(__cplusplus)
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// expected-warning@+2 {{comparison of integers of different signs}}
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#endif
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if (a < uv)
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return 1;
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#if !defined(SILENCE) && defined(_WIN32) && !defined(__cplusplus)
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// expected-warning@+2 {{comparison of integers of different signs}}
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#endif
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if (a < sizeof(message)/sizeof(message[0]))
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return 0;
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return 4;
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}
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enum NegEnum {
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NE_a = -1,
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NE_b = 0,
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NE_c = 10
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};
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int test_neg(enum NegEnum a) {
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if (a < 2)
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return 0;
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#ifndef SILENCE
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// expected-warning@+2 {{comparison of integers of different signs}}
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#endif
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if (a < 2U)
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return 0;
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unsigned uv = 2;
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#ifndef SILENCE
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// expected-warning@+2 {{comparison of integers of different signs}}
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#endif
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if (a < uv)
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return 1;
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#ifndef SILENCE
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// expected-warning@+2 {{comparison of integers of different signs}}
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#endif
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if (a < sizeof(message)/sizeof(message[0]))
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return 0;
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return 4;
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}
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