commit 563a03b1338d31c2462def43253a722bc885d384
author Anders Carlsson <andersca@mac.com> Fri Jul 10 19:20:26 2009 +0000
committer Anders Carlsson <andersca@mac.com> Fri Jul 10 19:20:26 2009 +0000
tree 0de700b6b1a11f69e804f33de53498360a04c06e
parent eeea45611d45238c34474c183cee96d47ae79e24

Fix a problem that Eli noticed, and that Doug helped me fix.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@75265 91177308-0d34-0410-b5e6-96231b3b80d8

include/clang/AST/Type.h

diff --git a/include/clang/AST/Type.h b/include/clang/AST/Type.h
index 2beaba6..39eb184 100644
--- a/include/clang/AST/Type.h
+++ b/include/clang/AST/Type.h
@@ -1463,11 +1463,18 @@
 /// DecltypeType (C++0x)
 class DecltypeType : public Type {
   Expr *E;
-  DecltypeType(Expr *E, QualType can = QualType());
+  
+  // FIXME: We could get rid of UnderlyingType if we wanted to: We would have to
+  // Move getDesugaredType to ASTContext so that it can call getDecltypeForExpr
+  // from it.
+  QualType UnderlyingType;
+  
+  DecltypeType(Expr *E, QualType underlyingType, QualType can = QualType());
   friend class ASTContext;  // ASTContext creates these.
 public:
   Expr *getUnderlyingExpr() const { return E; }
-  
+  QualType getUnderlyingType() const { return UnderlyingType; }
+
   virtual void getAsStringInternal(std::string &InnerString, 
                                    const PrintingPolicy &Policy) const;
   

lib/AST/ASTContext.cpp

diff --git a/lib/AST/ASTContext.cpp b/lib/AST/ASTContext.cpp
index de4816c..2bd1482 100644
--- a/lib/AST/ASTContext.cpp
+++ b/lib/AST/ASTContext.cpp
@@ -1964,10 +1964,10 @@
 QualType ASTContext::getDecltypeType(Expr *e) {
   DecltypeType *dt;
   if (e->isTypeDependent()) // FIXME: canonicalize the expression
-    dt = new (*this, 8) DecltypeType(e);
+    dt = new (*this, 8) DecltypeType(e, DependentTy);
   else {
     QualType T = getDecltypeForExpr(e, *this);
-    dt = new (*this, 8) DecltypeType(e, getCanonicalType(T));    
+    dt = new (*this, 8) DecltypeType(e, T, getCanonicalType(T));    
   }
   Types.push_back(dt);
   return QualType(dt, 0);

lib/AST/Type.cpp

diff --git a/lib/AST/Type.cpp b/lib/AST/Type.cpp
index d5dd776..78c3b78 100644
--- a/lib/AST/Type.cpp
+++ b/lib/AST/Type.cpp
@@ -124,8 +124,10 @@
     return TOE->getUnderlyingExpr()->getType().getDesugaredType();
   if (const TypeOfType *TOT = dyn_cast<TypeOfType>(this))
     return TOT->getUnderlyingType().getDesugaredType();
-  if (const DecltypeType *DTT = dyn_cast<DecltypeType>(this))
-    return DTT->getCanonicalTypeInternal();
+  if (const DecltypeType *DTT = dyn_cast<DecltypeType>(this)) {
+    if (!DTT->getUnderlyingType()->isDependentType())
+      return DTT->getUnderlyingType().getDesugaredType();
+  }
   if (const TemplateSpecializationType *Spec 
         = dyn_cast<TemplateSpecializationType>(this)) {
     if (ForDisplay)
@@ -1074,8 +1076,9 @@
   : Type(TypeOfExpr, can, E->isTypeDependent()), TOExpr(E) {
 }
 
-DecltypeType::DecltypeType(Expr *E, QualType can)
-  : Type(Decltype, can, E->isTypeDependent()), E(E) {
+DecltypeType::DecltypeType(Expr *E, QualType underlyingType, QualType can)
+  : Type(Decltype, can, E->isTypeDependent()), E(E), 
+  UnderlyingType(underlyingType) {
 }
 
 TagType::TagType(TypeClass TC, TagDecl *D, QualType can) 

lib/CodeGen/CGDebugInfo.cpp

diff --git a/lib/CodeGen/CGDebugInfo.cpp b/lib/CodeGen/CGDebugInfo.cpp
index cf8e19a..8fa1e9c 100644
--- a/lib/CodeGen/CGDebugInfo.cpp
+++ b/lib/CodeGen/CGDebugInfo.cpp
@@ -792,8 +792,8 @@
     return Slot = getOrCreateType(cast<TypeOfType>(Ty)->getUnderlyingType(),
                                   Unit);
   case Type::Decltype:
-    return Slot = getOrCreateType(cast<DecltypeType>(Ty)->getUnderlyingExpr()
-                                  ->getType(), Unit);
+    return Slot = getOrCreateType(cast<DecltypeType>(Ty)->getUnderlyingType(),
+                                  Unit);
   }
   
   return Slot;