34 lines
746 B
C
34 lines
746 B
C
// RUN: clang-cc -fsyntax-only -verify %s
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int foo(int x) {
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return x == x; // expected-warning {{self-comparison always results}}
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}
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int foo2(int x) {
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return (x) != (((x))); // expected-warning {{self-comparison always results}}
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}
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int qux(int x) {
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return x < x; // expected-warning {{self-comparison}}
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}
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int qux2(int x) {
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return x > x; // expected-warning {{self-comparison}}
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}
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int bar(float x) {
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return x == x; // no-warning
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}
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int bar2(float x) {
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return x != x; // no-warning
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}
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// Motivated by <rdar://problem/6703892>, self-comparisons of enum constants
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// should not be warned about. These can be expanded from macros, and thus
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// are usually deliberate.
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int compare_enum() {
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enum { A };
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return A == A; // no-warning
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}
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