From fa869547eb1cab12d7e0c0dfa8ba594e336b9b32 Mon Sep 17 00:00:00 2001
From: Eli Friedman <eli.friedman@gmail.com>
Date: Thu, 5 Aug 2010 02:54:05 +0000
Subject: [PATCH] Preserve calling convention etc. across template
 instantiations.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@110304 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Sema/Sema.h                    |  3 ++-
 lib/Sema/SemaTemplateDeduction.cpp |  3 ++-
 lib/Sema/SemaType.cpp              |  6 +++---
 lib/Sema/TreeTransform.h           | 15 ++++++++++-----
 4 files changed, 17 insertions(+), 10 deletions(-)

diff --git a/lib/Sema/Sema.h b/lib/Sema/Sema.h
index 134596096d..59a628aad2 100644
--- a/lib/Sema/Sema.h
+++ b/lib/Sema/Sema.h
@@ -769,7 +769,8 @@ public:
   QualType BuildFunctionType(QualType T,
                              QualType *ParamTypes, unsigned NumParamTypes,
                              bool Variadic, unsigned Quals,
-                             SourceLocation Loc, DeclarationName Entity);
+                             SourceLocation Loc, DeclarationName Entity,
+                             const FunctionType::ExtInfo &Info);
   QualType BuildMemberPointerType(QualType T, QualType Class,
                                   SourceLocation Loc,
                                   DeclarationName Entity);
diff --git a/lib/Sema/SemaTemplateDeduction.cpp b/lib/Sema/SemaTemplateDeduction.cpp
index 403d5543a6..885cb06dca 100644
--- a/lib/Sema/SemaTemplateDeduction.cpp
+++ b/lib/Sema/SemaTemplateDeduction.cpp
@@ -1245,7 +1245,8 @@ Sema::SubstituteExplicitTemplateArguments(
                                       Proto->isVariadic(),
                                       Proto->getTypeQuals(),
                                       Function->getLocation(),
-                                      Function->getDeclName());
+                                      Function->getDeclName(),
+                                      Proto->getExtInfo());
     if (FunctionType->isNull() || Trap.hasErrorOccurred())
       return TDK_SubstitutionFailure;
   }
diff --git a/lib/Sema/SemaType.cpp b/lib/Sema/SemaType.cpp
index feff524143..b3df9eb436 100644
--- a/lib/Sema/SemaType.cpp
+++ b/lib/Sema/SemaType.cpp
@@ -811,7 +811,8 @@ QualType Sema::BuildFunctionType(QualType T,
                                  QualType *ParamTypes,
                                  unsigned NumParamTypes,
                                  bool Variadic, unsigned Quals,
-                                 SourceLocation Loc, DeclarationName Entity) {
+                                 SourceLocation Loc, DeclarationName Entity,
+                                 const FunctionType::ExtInfo &Info) {
   if (T->isArrayType() || T->isFunctionType()) {
     Diag(Loc, diag::err_func_returning_array_function) 
       << T->isFunctionType() << T;
@@ -833,8 +834,7 @@ QualType Sema::BuildFunctionType(QualType T,
     return QualType();
 
   return Context.getFunctionType(T, ParamTypes, NumParamTypes, Variadic,
-                                 Quals, false, false, 0, 0,
-                                 FunctionType::ExtInfo());
+                                 Quals, false, false, 0, 0, Info);
 }
 
 /// \brief Build a member pointer type \c T Class::*.
diff --git a/lib/Sema/TreeTransform.h b/lib/Sema/TreeTransform.h
index 9920e4e9ea..d13219dbcf 100644
--- a/lib/Sema/TreeTransform.h
+++ b/lib/Sema/TreeTransform.h
@@ -468,7 +468,8 @@ public:
   QualType RebuildFunctionProtoType(QualType T,
                                     QualType *ParamTypes,
                                     unsigned NumParamTypes,
-                                    bool Variadic, unsigned Quals);
+                                    bool Variadic, unsigned Quals,
+                                    const FunctionType::ExtInfo &Info);
 
   /// \brief Build a new unprototyped function type.
   QualType RebuildFunctionNoProtoType(QualType ResultType);
@@ -2932,7 +2933,8 @@ TreeTransform<Derived>::TransformFunctionProtoType(TypeLocBuilder &TLB,
                                                    ParamTypes.data(),
                                                    ParamTypes.size(),
                                                    T->isVariadic(),
-                                                   T->getTypeQuals());
+                                                   T->getTypeQuals(),
+                                                   T->getExtInfo());
     if (Result.isNull())
       return QualType();
   }
@@ -6252,7 +6254,8 @@ TreeTransform<Derived>::TransformBlockExpr(BlockExpr *E) {
                                                         ParamTypes.data(),
                                                         ParamTypes.size(),
                                                         BD->isVariadic(),
-                                                        0);
+                                                        0,
+                                               BExprFunctionType->getExtInfo());
   
   CurBlock->FunctionType = FunctionType;
   return SemaRef.ActOnBlockStmtExpr(CaretLoc, move(Body), /*Scope=*/0);
@@ -6429,11 +6432,13 @@ QualType TreeTransform<Derived>::RebuildFunctionProtoType(QualType T,
                                                           QualType *ParamTypes,
                                                         unsigned NumParamTypes,
                                                           bool Variadic,
-                                                          unsigned Quals) {
+                                                          unsigned Quals,
+                                            const FunctionType::ExtInfo &Info) {
   return SemaRef.BuildFunctionType(T, ParamTypes, NumParamTypes, Variadic,
                                    Quals,
                                    getDerived().getBaseLocation(),
-                                   getDerived().getBaseEntity());
+                                   getDerived().getBaseEntity(),
+                                   Info);
 }
 
 template<typename Derived>
-- 
2.40.0