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-rw-r--r--clang/lib/Sema/SemaDecl.cpp7
1 files changed, 6 insertions, 1 deletions
diff --git a/clang/lib/Sema/SemaDecl.cpp b/clang/lib/Sema/SemaDecl.cpp
index 8f19edbc4f363..a8ee656dced88 100644
--- a/clang/lib/Sema/SemaDecl.cpp
+++ b/clang/lib/Sema/SemaDecl.cpp
@@ -3475,7 +3475,12 @@ bool Sema::MergeFunctionDecl(FunctionDecl *New, NamedDecl *&OldD,
}
}
- if (OldQTypeForComparison == NewQType)
+ // If the function types are compatible, merge the declarations. Ignore the
+ // exception specifier because it was already checked above in
+ // CheckEquivalentExceptionSpec, and we don't want follow-on diagnostics
+ // about incompatible types under -fms-compatibility.
+ if (Context.hasSameFunctionTypeIgnoringExceptionSpec(OldQTypeForComparison,
+ NewQType))
return MergeCompatibleFunctionDecls(New, Old, S, MergeTypeWithOld);
// If the types are imprecise (due to dependent constructs in friends or