C++1y: Allow aggregates to have default initializers.
Add a CXXDefaultInitExpr, analogous to CXXDefaultArgExpr, and use it both in
CXXCtorInitializers and in InitListExprs to represent a default initializer.
There's an additional complication here: because the default initializer can
refer to the initialized object via its 'this' pointer, we need to make sure
that 'this' points to the right thing within the evaluation.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179958 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGExprAgg.cpp b/lib/CodeGen/CGExprAgg.cpp
index 6b29b31..b974e1d 100644
--- a/lib/CodeGen/CGExprAgg.cpp
+++ b/lib/CodeGen/CGExprAgg.cpp
@@ -170,6 +170,10 @@
void VisitCXXDefaultArgExpr(CXXDefaultArgExpr *DAE) {
Visit(DAE->getExpr());
}
+ void VisitCXXDefaultInitExpr(CXXDefaultInitExpr *DIE) {
+ CodeGenFunction::CXXDefaultInitExprScope Scope(CGF);
+ Visit(DIE->getExpr());
+ }
void VisitCXXBindTemporaryExpr(CXXBindTemporaryExpr *E);
void VisitCXXConstructExpr(const CXXConstructExpr *E);
void VisitLambdaExpr(LambdaExpr *E);
@@ -1189,7 +1193,10 @@
// the optimizer, especially with bitfields.
unsigned NumInitElements = E->getNumInits();
RecordDecl *record = E->getType()->castAs<RecordType>()->getDecl();
-
+
+ // Prepare a 'this' for CXXDefaultInitExprs.
+ CodeGenFunction::FieldConstructionScope FCS(CGF, Dest.getAddr());
+
if (record->isUnion()) {
// Only initialize one field of a union. The field itself is
// specified by the initializer list.