251099171f
Summary: In order for libc++ to meaningfully use `diagnose_if` warnings they need to be emitted from system headers by default. This patch changes the `diagnose_if` warning diagnostic to be shown in system headers. Reviewers: george.burgess.iv, rsmith, aaron.ballman Subscribers: cfe-commits Differential Revision: https://reviews.llvm.org/D28703 llvm-svn: 291963
12 lines
307 B
C
12 lines
307 B
C
#pragma GCC system_header
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inline int system_header_func(int x)
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__attribute__((diagnose_if(x == x, "system header warning", "warning"))) // expected-note {{from 'diagnose_if' attribute}}
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{
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return 0;
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}
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void test_system_header() {
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system_header_func(0); // expected-warning {{system header warning}}
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}
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