844e9534c6
D144654 made it so that we warn on any defining or undefining of builtin macros. However the C and C++ standards only forbid the defining or undefining of macros defined in the language standard itself, but clang defines more macros than those and warning on those may not be helpful. Resolve this by only warning if the builtin macro name is the name of a macro defined by the language. This is done in a way that removes some of the existing checks, as those were made redundant by restricting the warning in this way. Differential Revision: https://reviews.llvm.org/D151741
13 lines
342 B
C
13 lines
342 B
C
// RUN: %clang_cc1 -triple=i386-none-none -fsyntax-only -verify %s
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// RUN: %clang_cc1 -triple=x86_64-none-none -fsyntax-only -verify %s
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// Check that we can undefine triple-specific defines without warning
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// expected-no-diagnostics
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#undef __i386
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#undef __i386__
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#undef i386
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#undef __amd64
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#undef __amd64__
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#undef __x86_64
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#undef __x86_64__
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