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| author | Douglas Gregor <dgregor@apple.com> | 2011-08-03 17:01:05 +0000 |
|---|---|---|
| committer | Douglas Gregor <dgregor@apple.com> | 2011-08-03 17:01:05 +0000 |
| commit | 73b855118823665ae3555e6f53406769b7ece22a (patch) | |
| tree | 7ff161aa6dac8169d4ff831c69e2278780ee7326 /clang | |
| parent | da618420ee5b8850b41c9f1c16a370342ec5c5a3 (diff) | |
| download | bcm5719-llvm-73b855118823665ae3555e6f53406769b7ece22a.tar.gz bcm5719-llvm-73b855118823665ae3555e6f53406769b7ece22a.zip | |
Comment the weird behavior of __has_feature(is_empty) and __has_feature(is_pod)
llvm-svn: 136788
Diffstat (limited to 'clang')
| -rw-r--r-- | clang/lib/Lex/PPMacroExpansion.cpp | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/clang/lib/Lex/PPMacroExpansion.cpp b/clang/lib/Lex/PPMacroExpansion.cpp index 7046c5f2fda..a4b6cc9db85 100644 --- a/clang/lib/Lex/PPMacroExpansion.cpp +++ b/clang/lib/Lex/PPMacroExpansion.cpp @@ -639,6 +639,10 @@ static bool HasFeature(const Preprocessor &PP, const IdentifierInfo *II) { .Case("is_base_of", LangOpts.CPlusPlus) .Case("is_class", LangOpts.CPlusPlus) .Case("is_convertible_to", LangOpts.CPlusPlus) + // __is_empty is available only if the horrible + // "struct __is_empty" parsing hack hasn't been needed in this + // translation unit. If it has, __is_empty reverts to a normal + // identifier and __has_feature(is_empty) evaluates false. .Case("is_empty", LangOpts.CPlusPlus && PP.getIdentifierInfo("__is_empty")->getTokenID() @@ -646,6 +650,10 @@ static bool HasFeature(const Preprocessor &PP, const IdentifierInfo *II) { .Case("is_enum", LangOpts.CPlusPlus) .Case("is_literal", LangOpts.CPlusPlus) .Case("is_standard_layout", LangOpts.CPlusPlus) + // __is_pod is available only if the horrible + // "struct __is_pod" parsing hack hasn't been needed in this + // translation unit. If it has, __is_pod reverts to a normal + // identifier and __has_feature(is_pod) evaluates false. .Case("is_pod", LangOpts.CPlusPlus && PP.getIdentifierInfo("__is_pod")->getTokenID() |
