diff options
Diffstat (limited to 'clang/lib/Lex/PPDirectives.cpp')
| -rw-r--r-- | clang/lib/Lex/PPDirectives.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/clang/lib/Lex/PPDirectives.cpp b/clang/lib/Lex/PPDirectives.cpp index f74aad3c816..efa188f7529 100644 --- a/clang/lib/Lex/PPDirectives.cpp +++ b/clang/lib/Lex/PPDirectives.cpp @@ -1594,7 +1594,7 @@ void Preprocessor::HandleUndefDirective(Token &UndefTok) { // If the macro is not defined, this is a noop undef, just return. if (MI == 0) return; - if (!MI->isUsed()) + if (!MI->isUsed() && MI->isWarnIfUnused()) Diag(MI->getDefinitionLoc(), diag::pp_macro_not_used); // If the callbacks want to know, tell them about the macro #undef. |
