diff options
Diffstat (limited to 'clang/lib/Lex/PPDirectives.cpp')
| -rw-r--r-- | clang/lib/Lex/PPDirectives.cpp | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/clang/lib/Lex/PPDirectives.cpp b/clang/lib/Lex/PPDirectives.cpp index f422d254f0f..0f0d25b887a 100644 --- a/clang/lib/Lex/PPDirectives.cpp +++ b/clang/lib/Lex/PPDirectives.cpp @@ -1527,7 +1527,7 @@ void Preprocessor::HandleDefineDirective(Token &DefineTok) { // then don't bother calling MacroInfo::isIdenticalTo. if (!getDiagnostics().getSuppressSystemWarnings() || !SourceMgr.isInSystemHeader(DefineTok.getLocation())) { - if (!OtherMI->isUsed()) + if (!OtherMI->isUsed() && OtherMI->isWarnIfUnused()) Diag(OtherMI->getDefinitionLoc(), diag::pp_macro_not_used); // Macros must be identical. This means all tokens and whitespace @@ -1539,6 +1539,8 @@ void Preprocessor::HandleDefineDirective(Token &DefineTok) { Diag(OtherMI->getDefinitionLoc(), diag::note_previous_definition); } } + if (OtherMI->isWarnIfUnused()) + WarnUnusedMacroLocs.erase(OtherMI->getDefinitionLoc()); ReleaseMacroInfo(OtherMI); } |
