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-rw-r--r--lib/Sema/SemaOverload.cpp9
1 files changed, 9 insertions, 0 deletions
diff --git a/lib/Sema/SemaOverload.cpp b/lib/Sema/SemaOverload.cpp
index 3f3ed0e1f9..79caecc5a8 100644
--- a/lib/Sema/SemaOverload.cpp
+++ b/lib/Sema/SemaOverload.cpp
@@ -6676,6 +6676,15 @@ void DiagnoseArityMismatch(Sema &S, OverloadCandidate *Cand,
unsigned MinParams = Fn->getMinRequiredArguments();
+ // With invalid overloaded operators, it's possible that we think we
+ // have an arity mismatch when it fact it looks like we have the
+ // right number of arguments, because only overloaded operators have
+ // the weird behavior of overloading member and non-member functions.
+ // Just don't report anything.
+ if (Fn->isInvalidDecl() &&
+ Fn->getDeclName().getNameKind() == DeclarationName::CXXOperatorName)
+ return;
+
// at least / at most / exactly
unsigned mode, modeCount;
if (NumFormalArgs < MinParams) {