Add support for derived class special members hiding functions brought in from

a base class via a using-declaration. If a class has a using-declaration
declaring either a constructor or an assignment operator, eagerly declare its
special members in case they need to displace a shadow declaration from a
using-declaration.

llvm-svn: 269398

1 files changed, 10 insertions, 0 deletions

diff --git a/clang/lib/AST/DeclCXX.cpp b/clang/lib/AST/DeclCXX.cpp
index 385ac0b83e9..f22f2ee0afe 100644
--- a/clang/lib/AST/DeclCXX.cpp
+++ b/clang/lib/AST/DeclCXX.cpp
@@ -53,6 +53,7 @@ CXXRecordDecl::DefinitionData::DefinitionData(CXXRecordDecl *D)
       HasPublicFields(false), HasMutableFields(false), HasVariantMembers(false),
       HasOnlyCMembers(true), HasInClassInitializer(false),
       HasUninitializedReferenceMember(false), HasUninitializedFields(false),
+      HasInheritedConstructor(false), HasInheritedAssignment(false),
       NeedOverloadResolutionForMoveConstructor(false),
       NeedOverloadResolutionForMoveAssignment(false),
       NeedOverloadResolutionForDestructor(false),
@@ -955,6 +956,15 @@ void CXXRecordDecl::addedMember(Decl *D) {
       data().Conversions.get(Ctx).addDecl(Ctx, Shadow, Shadow->getAccess());
     }
   }
+
+  if (UsingDecl *Using = dyn_cast<UsingDecl>(D)) {
+    if (Using->getDeclName().getNameKind() ==
+        DeclarationName::CXXConstructorName)
+      data().HasInheritedConstructor = true;
+
+    if (Using->getDeclName().getCXXOverloadedOperator() == OO_Equal)
+      data().HasInheritedAssignment = true;
+  }
 }
 
 void CXXRecordDecl::finishedDefaultedOrDeletedMember(CXXMethodDecl *D) {