Use MaybeCreateCXXExprWithTemporaries for potential destruction of

created temporary. Use own initialized entity for copied in block
variables.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@105533 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Sema/SemaExpr.cpp

@@ -1757,11 +1757,12 @@ Sema::BuildDeclarationNameExpr(const CXXScopeSpec &SS,
                                          SourceLocation());
       
       OwningExprResult Res = PerformCopyInitialization(
-                      InitializedEntity::InitializeResult(SourceLocation(), 
-                                                          T, false),
+                      InitializedEntity::InitializeBlock(VD->getLocation(), 
+                                                         T, false),
                       SourceLocation(),
                       Owned(E));
       if (!Res.isInvalid()) {
+        Res = MaybeCreateCXXExprWithTemporaries(move(Res));
         Expr *Init = Res.takeAs<Expr>();
         if (isa<CXXConstructExpr>(Init))
           BDRE->setCopyConstructorExpr(Init);

lib/Sema/SemaInit.cpp

@@ -1956,6 +1956,7 @@ DeclarationName InitializedEntity::getName() const {
   case EK_Base:
   case EK_ArrayElement:
   case EK_VectorElement:
+  case EK_BlockElement:
     return DeclarationName();
   }
   
@@ -1977,6 +1978,7 @@ DeclaratorDecl *InitializedEntity::getDecl() const {
   case EK_Base:
   case EK_ArrayElement:
   case EK_VectorElement:
+  case EK_BlockElement:
     return 0;
   }
   
@@ -1998,6 +2000,7 @@ bool InitializedEntity::allowsNRVO() const {
   case EK_Base:
   case EK_ArrayElement:
   case EK_VectorElement:
+  case EK_BlockElement:
     break;
   }
 
@@ -3170,6 +3173,7 @@ getAssignmentAction(const InitializedEntity &Entity) {
   case InitializedEntity::EK_Member:
   case InitializedEntity::EK_ArrayElement:
   case InitializedEntity::EK_VectorElement:
+  case InitializedEntity::EK_BlockElement:
     return Sema::AA_Initializing;
   }
 
@@ -3188,6 +3192,7 @@ static bool shouldBindAsTemporary(const InitializedEntity &Entity) {
   case InitializedEntity::EK_Base:
   case InitializedEntity::EK_VectorElement:
   case InitializedEntity::EK_Exception:
+  case InitializedEntity::EK_BlockElement:
     return false;
     
   case InitializedEntity::EK_Parameter:
@@ -3207,6 +3212,7 @@ static bool shouldDestroyTemporary(const InitializedEntity &Entity) {
     case InitializedEntity::EK_New:
     case InitializedEntity::EK_Base:
     case InitializedEntity::EK_VectorElement:
+    case InitializedEntity::EK_BlockElement:
       return false;
       
     case InitializedEntity::EK_Variable:
@@ -3291,6 +3297,7 @@ static Sema::OwningExprResult CopyObject(Sema &S,
   case InitializedEntity::EK_New:
   case InitializedEntity::EK_Base:
   case InitializedEntity::EK_VectorElement:
+  case InitializedEntity::EK_BlockElement:
     Loc = CurInitExpr->getLocStart();
     break;
   }

lib/Sema/SemaInit.h

@@ -66,7 +66,10 @@ public:
     EK_Base,
     /// \brief The entity being initialized is an element of a vector.
     /// or vector.
-    EK_VectorElement
+    EK_VectorElement,
+    /// \brief The entity being initialized is a field of block descriptor for
+    /// the copied-in c++ object.
+    EK_BlockElement
   };
   
 private:
@@ -166,6 +169,11 @@ public:
     return InitializedEntity(EK_Result, ReturnLoc, Type, NRVO);
   }
 
+  static InitializedEntity InitializeBlock(SourceLocation BlockVarLoc,
+                                           QualType Type, bool NRVO) {
+    return InitializedEntity(EK_BlockElement, BlockVarLoc, Type, NRVO);
+  }
+  
   /// \brief Create the initialization entity for an exception object.
   static InitializedEntity InitializeException(SourceLocation ThrowLoc,
                                                QualType Type, bool NRVO) {