diff options
| author | Chandler Carruth <chandlerc@gmail.com> | 2011-04-23 09:27:53 +0000 |
|---|---|---|
| committer | Chandler Carruth <chandlerc@gmail.com> | 2011-04-23 09:27:53 +0000 |
| commit | 1cfe3c305c0d5393fd94167808b8f5d96cd65227 (patch) | |
| tree | a32085eeef5578ac9d7268ec06b5ad170a679f26 /lib/Frontend/InitPreprocessor.cpp | |
| parent | f1cc1d0efddc40a76ab70b074792dcd7e5ca4315 (diff) | |
Fix Clang's __DEPRECATED define to be controled by -Wdeprecated. This
matches GCC behavior which libstdc++ uses to limit #warning-based
messages about deprecation.
The machinery involves threading this through a new '-fdeprecated-macro'
flag for CC1. The flag defaults to "on", similarly to -Wdeprecated. We
turn the flag off in the driver when the warning is turned off (modulo
matching some GCC bugs). We record this as a language option, and key
the preprocessor on the option when introducing the define.
A separate flag rather than a '-D' flag allows us to properly represent
the difference between C and C++ builds (only C++ receives the define),
and it allows the specific behavior of following -Wdeprecated without
potentially impacting the set of user-provided macro flags.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@130055 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Frontend/InitPreprocessor.cpp')
| -rw-r--r-- | lib/Frontend/InitPreprocessor.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/Frontend/InitPreprocessor.cpp b/lib/Frontend/InitPreprocessor.cpp index ff3cf4b9cd..802d66ff0e 100644 --- a/lib/Frontend/InitPreprocessor.cpp +++ b/lib/Frontend/InitPreprocessor.cpp @@ -319,7 +319,8 @@ static void InitializePredefinedMacros(const TargetInfo &TI, Builder.defineMacro("__USING_SJLJ_EXCEPTIONS__"); if (LangOpts.CPlusPlus) { - Builder.defineMacro("__DEPRECATED"); + if (LangOpts.Deprecated) + Builder.defineMacro("__DEPRECATED"); Builder.defineMacro("__GNUG__", "4"); Builder.defineMacro("__GXX_WEAK__"); if (LangOpts.GNUMode) |