Handle ImplicitCastExprs when instantiating templates.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@67063 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Sema/SemaTemplateInstantiate.cpp b/lib/Sema/SemaTemplateInstantiate.cpp
index 1c136e9f6e76d7a3870c5b9165cf93ecec1fcc2b..25553e510fbb369b39ed7c9bbc83c237d4c2846c 100644 (file)
--- a/lib/Sema/SemaTemplateInstantiate.cpp
+++ b/lib/Sema/SemaTemplateInstantiate.cpp
@@ -617,7 +617,8 @@ namespace {
     OwningExprResult VisitCXXOperatorCallExpr(CXXOperatorCallExpr *E);
     OwningExprResult VisitSizeOfAlignOfExpr(SizeOfAlignOfExpr *E);
     OwningExprResult VisitCXXTemporaryObjectExpr(CXXTemporaryObjectExpr *E);
-
+    OwningExprResult VisitImplicitCastExpr(ImplicitCastExpr *E);
+      
     // Base case. I'm supposed to ignore this.
     Sema::OwningExprResult VisitStmt(Stmt *S) { 
       S->dump();
@@ -908,6 +909,21 @@ TemplateExprInstantiator::VisitCXXTemporaryObjectExpr(
   return SemaRef.ExprError();
 }
 
+Sema::OwningExprResult TemplateExprInstantiator::VisitImplicitCastExpr(
+                                                         ImplicitCastExpr *E) {
+  assert(!E->isTypeDependent() && "Implicit casts must have known types");
+
+  Sema::OwningExprResult SubExpr = Visit(E->getSubExpr());
+  if (SubExpr.isInvalid())
+    return SemaRef.ExprError();
+
+  ImplicitCastExpr *ICE = 
+    new (SemaRef.Context) ImplicitCastExpr(E->getType(),
+                                           (Expr *)SubExpr.release(),
+                                           E->isLvalueCast());
+  return SemaRef.Owned(ICE);
+}
+
 Sema::OwningExprResult 
 Sema::InstantiateExpr(Expr *E, const TemplateArgument *TemplateArgs,
                       unsigned NumTemplateArgs) {