derek.holloway
7502bf64a4
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40 lines
1.4 KiB
C++
40 lines
1.4 KiB
C++
// RUN: %clang_cc1 -fsyntax-only \
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// RUN: -fno-signed-char \
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// RUN: -Wtautological-unsigned-zero-compare \
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// RUN: -Wtautological-unsigned-char-zero-compare \
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// RUN: -verify=unsigned %s
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// RUN: %clang_cc1 -fsyntax-only \
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// RUN: -Wtautological-unsigned-zero-compare \
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// RUN: -Wtautological-unsigned-char-zero-compare \
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// RUN: -verify=signed %s
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void f(char c, unsigned char uc, signed char cc) {
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if (c < 0)
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return;
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// unsigned-warning@-2 {{comparison of char expression < 0 is always false, since char is interpreted as unsigned}}
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if (uc < 0)
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return;
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// unsigned-warning@-2 {{comparison of unsigned expression < 0 is always false}}
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// signed-warning@-3 {{comparison of unsigned expression < 0 is always false}}
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if (cc < 0)
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return;
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// Promoted to integer expressions should not warn.
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if (c - 4 < 0)
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return;
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}
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void ref(char &c, unsigned char &uc, signed char &cc) {
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if (c < 0)
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return;
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// unsigned-warning@-2 {{comparison of char expression < 0 is always false, since char is interpreted as unsigned}}
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if (uc < 0)
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return;
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// unsigned-warning@-2 {{comparison of unsigned expression < 0 is always false}}
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// signed-warning@-3 {{comparison of unsigned expression < 0 is always false}}
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if (cc < 0)
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return;
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// Promoted to integer expressions should not warn.
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if (c - 4 < 0)
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return;
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}
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