Add implicitly-declared default and copy constructors to C++ classes,

when appropriate.

Conversions for class types now make use of copy constructors. I've
replaced the egregious hack allowing class-to-class conversions with a
slightly less egregious hack calling these conversions standard
conversions (for overloading reasons).



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58622 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 7 insertions, 0 deletions

diff --git a/lib/Sema/SemaExprCXX.cpp b/lib/Sema/SemaExprCXX.cpp
index d4d4f39662..99b0829593 100644
--- a/lib/Sema/SemaExprCXX.cpp
+++ b/lib/Sema/SemaExprCXX.cpp
@@ -982,6 +982,13 @@ Sema::PerformImplicitConversion(Expr *&From, QualType ToType,
     ImpCastExprToType(From, FromType);
     break;
 
+  case ICK_Derived_To_Base:
+    // FIXME: This should never happen. It's a consequence of
+    // pretending that a user-defined conversion via copy constructor
+    // is actually a standard conversion.
+    ImpCastExprToType(From, ToType);
+    break;
+
   default:
     assert(false && "Improper second standard conversion");
     break;