From: Anders Carlsson <andersca@mac.com>
Date: Thu, 12 Nov 2009 16:53:16 +0000 (+0000)
Subject: Set CK_BaseToDerived in TryStaticDowncast.
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=95c5d8ac29ba3423e735a0732713907e484b800d;p=clang

Set CK_BaseToDerived in TryStaticDowncast.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@86996 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Sema/SemaCXXCast.cpp b/lib/Sema/SemaCXXCast.cpp
index eb931f33a2..269329543e 100644
--- a/lib/Sema/SemaCXXCast.cpp
+++ b/lib/Sema/SemaCXXCast.cpp
@@ -70,16 +70,19 @@ static TryCastResult TryLValueToRValueCast(Sema &Self, Expr *SrcExpr,
 static TryCastResult TryStaticReferenceDowncast(Sema &Self, Expr *SrcExpr,
                                                 QualType DestType, bool CStyle,
                                                 const SourceRange &OpRange,
-                                                unsigned &msg);
+                                                unsigned &msg,
+                                                CastExpr::CastKind &Kind);
 static TryCastResult TryStaticPointerDowncast(Sema &Self, QualType SrcType,
                                               QualType DestType, bool CStyle,
                                               const SourceRange &OpRange,
-                                              unsigned &msg);
+                                              unsigned &msg,
+                                              CastExpr::CastKind &Kind);
 static TryCastResult TryStaticDowncast(Sema &Self, QualType SrcType,
                                        QualType DestType, bool CStyle,
                                        const SourceRange &OpRange,
                                        QualType OrigSrcType,
-                                       QualType OrigDestType, unsigned &msg);
+                                       QualType OrigDestType, unsigned &msg,
+                                       CastExpr::CastKind &Kind);
 static TryCastResult TryStaticMemberPointerUpcast(Sema &Self, QualType SrcType,
                                                   QualType DestType,bool CStyle,
                                                   const SourceRange &OpRange,
@@ -427,7 +430,8 @@ static TryCastResult TryStaticCast(Sema &Self, Expr *SrcExpr,
   // C++ 5.2.9p5, reference downcast.
   // See the function for details.
   // DR 427 specifies that this is to be applied before paragraph 2.
-  tcr = TryStaticReferenceDowncast(Self, SrcExpr, DestType, CStyle,OpRange,msg);
+  tcr = TryStaticReferenceDowncast(Self, SrcExpr, DestType, CStyle, OpRange, 
+                                   msg, Kind);
   if (tcr != TC_NotApplicable)
     return tcr;
 
@@ -473,7 +477,8 @@ static TryCastResult TryStaticCast(Sema &Self, Expr *SrcExpr,
 
   // Reverse pointer upcast. C++ 4.10p3 specifies pointer upcast.
   // C++ 5.2.9p8 additionally disallows a cast path through virtual inheritance.
-  tcr = TryStaticPointerDowncast(Self, SrcType, DestType, CStyle, OpRange, msg);
+  tcr = TryStaticPointerDowncast(Self, SrcType, DestType, CStyle, OpRange, msg,
+                                 Kind);
   if (tcr != TC_NotApplicable)
     return tcr;
 
@@ -544,7 +549,7 @@ TryLValueToRValueCast(Sema &Self, Expr *SrcExpr, QualType DestType,
 TryCastResult
 TryStaticReferenceDowncast(Sema &Self, Expr *SrcExpr, QualType DestType,
                            bool CStyle, const SourceRange &OpRange,
-                           unsigned &msg) {
+                           unsigned &msg, CastExpr::CastKind &Kind) {
   // C++ 5.2.9p5: An lvalue of type "cv1 B", where B is a class type, can be
   //   cast to type "reference to cv2 D", where D is a class derived from B,
   //   if a valid standard conversion from "pointer to D" to "pointer to B"
@@ -568,14 +573,14 @@ TryStaticReferenceDowncast(Sema &Self, Expr *SrcExpr, QualType DestType,
   QualType DestPointee = DestReference->getPointeeType();
 
   return TryStaticDowncast(Self, SrcExpr->getType(), DestPointee, CStyle,
-                           OpRange, SrcExpr->getType(), DestType, msg);
+                           OpRange, SrcExpr->getType(), DestType, msg, Kind);
 }
 
 /// Tests whether a conversion according to C++ 5.2.9p8 is valid.
 TryCastResult
 TryStaticPointerDowncast(Sema &Self, QualType SrcType, QualType DestType,
                          bool CStyle, const SourceRange &OpRange,
-                         unsigned &msg) {
+                         unsigned &msg, CastExpr::CastKind &Kind) {
   // C++ 5.2.9p8: An rvalue of type "pointer to cv1 B", where B is a class
   //   type, can be converted to an rvalue of type "pointer to cv2 D", where D
   //   is a class derived from B, if a valid standard conversion from "pointer
@@ -597,7 +602,7 @@ TryStaticPointerDowncast(Sema &Self, QualType SrcType, QualType DestType,
 
   return TryStaticDowncast(Self, SrcPointer->getPointeeType(),
                           DestPointer->getPointeeType(), CStyle,
-                          OpRange, SrcType, DestType, msg);
+                          OpRange, SrcType, DestType, msg, Kind);
 }
 
 /// TryStaticDowncast - Common functionality of TryStaticReferenceDowncast and
@@ -606,7 +611,8 @@ TryStaticPointerDowncast(Sema &Self, QualType SrcType, QualType DestType,
 TryCastResult
 TryStaticDowncast(Sema &Self, QualType SrcType, QualType DestType,
                   bool CStyle, const SourceRange &OpRange, QualType OrigSrcType,
-                  QualType OrigDestType, unsigned &msg) {
+                  QualType OrigDestType, unsigned &msg, 
+                  CastExpr::CastKind &Kind) {
   // We can only work with complete types. But don't complain if it doesn't work
   if (Self.RequireCompleteType(OpRange.getBegin(), SrcType, PDiag(0)) ||
       Self.RequireCompleteType(OpRange.getBegin(), DestType, PDiag(0)))
@@ -695,6 +701,7 @@ TryStaticDowncast(Sema &Self, QualType SrcType, QualType DestType,
     return TC_Failed;
   }
 
+  Kind = CastExpr::CK_BaseToDerived;
   return TC_Success;
 }