d7d743621a
gnu17 and earlier modes automatically expose several POSIX C APIs, and this was accidentally disabled for gnu2x in 7d644e1215b376ec5e915df9ea2eeb56e2d94626. This restores the behavior for gnu2x mode (without changing the behavior in C standards modes instead of GNU modes). Fixes #56607
14 lines
689 B
C
14 lines
689 B
C
// RUN: %clang_cc1 -fsyntax-only -verify=gnu -std=gnu17 %s
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// RUN: %clang_cc1 -fsyntax-only -verify=gnu -std=gnu2x %s
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// RUN: %clang_cc1 -fsyntax-only -verify=std -std=c17 %s
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// RUN: %clang_cc1 -fsyntax-only -verify=std -std=c2x %s
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// std-no-diagnostics
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// 'index' is a builtin library function, but only in GNU mode. So this should
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// give an error in GNU modes but be okay in non-GNU mode.
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// FIXME: the error is correct, but these notes are pretty awful.
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int index; // gnu-error {{redefinition of 'index' as different kind of symbol}} \
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gnu-note {{unguarded header; consider using #ifdef guards or #pragma once}} \
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gnu-note {{previous definition is here}}
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