derek.holloway
7502bf64a4
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24 lines
862 B
C
24 lines
862 B
C
// RUN: %clang_cc1 %s -verify -Wconversion -fsyntax-only -triple x86_64-pc-linux-gnu
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// RUN: %clang_cc1 %s -verify -Wconversion -fsyntax-only -triple i386-pc-linux-gnu
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void test(void) {
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unsigned int a = 1;
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unsigned long long b = -a; // expected-warning {{higher order bits are zeroes after implicit conversion}}
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long long c = -a; // expected-warning {{the resulting value is always non-negative after implicit conversion}}
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unsigned long b2 = -a;
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#ifdef __x86_64__
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// expected-warning@-2 {{higher order bits are zeroes after implicit conversion}}
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#endif
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long c2 = -a;
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#ifdef __x86_64__
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// expected-warning@-2 {{the resulting value is always non-negative after implicit conversion}}
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#else
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// expected-warning@-4 {{implicit conversion changes signedness: 'unsigned int' to 'long'}}
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#endif
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unsigned m;
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int n = -(m & 0xff); // no warning
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}
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