When transforming a C++ "new" expression's constructor arguments, drop

any arguments that are default-argument expressions. The can show up
when we have a new expression whose constructor arguments are not
type-dependent and whose allocated type is not dependent and has a
constructor with default arguments. Fixes PR7202.

llvm-svn: 104690

1 files changed, 3 insertions, 0 deletions

diff --git a/clang/lib/Sema/TreeTransform.h b/clang/lib/Sema/TreeTransform.h
index 7ef23290d8a..9b8031b7fdf 100644
--- a/clang/lib/Sema/TreeTransform.h
+++ b/clang/lib/Sema/TreeTransform.h
@@ -5210,6 +5210,9 @@ TreeTransform<Derived>::TransformCXXNewExpr(CXXNewExpr *E) {
   // transform the constructor arguments (if any).
   ASTOwningVector<&ActionBase::DeleteExpr> ConstructorArgs(SemaRef);
   for (unsigned I = 0, N = E->getNumConstructorArgs(); I != N; ++I) {
+    if (getDerived().DropCallArgument(E->getConstructorArg(I)))
+      break;
+    
     OwningExprResult Arg = getDerived().TransformExpr(E->getConstructorArg(I));
     if (Arg.isInvalid())
       return SemaRef.ExprError();