forked from OSchip/llvm-project
46 lines
946 B
C++
46 lines
946 B
C++
// RUN: %clang_cc1 -verify -fsyntax-only -Wshadow -Wold-style-cast -Wc++20-designator %s
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// Test that macro expansions from system headers don't trigger 'syntactic'
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// warnings that are not actionable.
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#ifdef IS_SYSHEADER
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#pragma clang system_header
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#define SANITY(a) (a / 0)
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#define SHADOW(a) __extension__({ int v = a; v; })
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#define OLD_STYLE_CAST(a) ((int) (a))
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struct Foo {
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int x;
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};
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#define DESIGNATED_INITIALIZERS (Foo{.x = 123})
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#else
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#define IS_SYSHEADER
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#include __FILE__
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void testSanity() {
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// Validate that the test is set up correctly
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int i = SANITY(0); // expected-warning {{division by zero is undefined}}
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}
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void PR16093() {
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// no -Wshadow in system macro expansion
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int i = SHADOW(SHADOW(1));
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}
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void PR18147() {
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// no -Wold-style-cast in system macro expansion
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int i = OLD_STYLE_CAST(0);
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}
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void PR52944() {
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// no -Wc++20-designator in system macro expansion
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auto i = DESIGNATED_INITIALIZERS;
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}
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#endif
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