From 63a00eeeed4c16876d989e17360b711afce08554 Mon Sep 17 00:00:00 2001
From: zebullax <zebullax@gmail.com>
Date: Wed, 15 Oct 2025 09:05:49 +0900
Subject: [PATCH] Revert "Merge pull request #191 from
 bloomberg/dealiasRetTypeOfArg"

This reverts commit 21cba0573602a0a7c865fcdea1d2e13613ebc0fa, reversing
changes made to c30343bfe5e16a25e8613a0f98b5b9973b0f6202.

Signed-off-by: zebullax <zebullax@gmail.com>
---
 clang/lib/AST/ExprConstantMeta.cpp | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/clang/lib/AST/ExprConstantMeta.cpp b/clang/lib/AST/ExprConstantMeta.cpp
index c846c04056aa..0808f3124833 100644
--- a/clang/lib/AST/ExprConstantMeta.cpp
+++ b/clang/lib/AST/ExprConstantMeta.cpp
@@ -22,7 +22,6 @@
 #include "clang/AST/Metafunction.h"
 #include "clang/AST/RecordLayout.h"
 #include "clang/AST/Reflection.h"
-#include "clang/AST/Type.h"
 #include "clang/Basic/DiagnosticMetafn.h"
 #include "clang/Basic/SourceManager.h"
 #include "clang/Lex/Lexer.h"
@@ -5606,9 +5605,7 @@ bool return_type_of(APValue &Result, ASTContext &C, MetaActions &Meta,
 
   switch (RV.getReflectionKind()) {
   case ReflectionKind::Type: {
-    // Unwrap alias, Keep CV and Ref
-    QualType rawType = desugarType(RV.getReflectedType(), true, false, false);
-    if (auto *FPT = dyn_cast<FunctionProtoType>(rawType)) {
+    if (auto *FPT = dyn_cast<FunctionProtoType>(RV.getReflectedType())) {
       QualType QT =
           desugarType(FPT->getReturnType(), /*UnwrapAliases=*/ true,
                       /*DropCV=*/false, /*DropRefs=*/false);