================
@@ -4446,6 +4446,24 @@ CompareStandardConversionSequences(Sema &S,
SourceLocation Loc,
T1 = S.Context.getQualifiedType(UnqualT1, T1Quals);
if (isa<ArrayType>(T2) && T2Quals)
T2 = S.Context.getQualifiedType(UnqualT2, T2Quals);
+
+ if (S.getLangOpts().MSVCReferenceBinding &&
+ S.Context.hasSameType(SCS1.getFromType(), SCS2.getFromType()) &&
+ !SCS1.getFromType().hasQualifiers() && SCS1.BindsToRvalue &&
+ SCS2.BindsToRvalue) {
+
+ // When binding a user-defined type temporary to an lvalue MSVC will
+ // pick `const T&` over `T&` when binding an unqualified `T&&`.
+ // Therefore we want to pick the more qualified const overload in this
+ // specific case.
----------------
MaxEW707 wrote:
https://godbolt.org/z/xaPE6rMc1 for reference on this overload resolution case.
https://github.com/llvm/llvm-project/pull/99833
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