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.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@269398 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 20 insertions, 0 deletions

diff --git a/include/clang/AST/DeclCXX.h b/include/clang/AST/DeclCXX.h
index 8906d9c798..20aa7d1ab4 100644
--- a/include/clang/AST/DeclCXX.h
+++ b/include/clang/AST/DeclCXX.h
@@ -382,6 +382,14 @@ class CXXRecordDecl : public RecordDecl {
     /// provided default ctor also doesn't have an in-class initializer.
     unsigned HasUninitializedFields : 1;
 
+    /// \brief True if there are any member using-declarations that inherit
+    /// constructors from a base class.
+    unsigned HasInheritedConstructor : 1;
+
+    /// \brief True if there are any member using-declarations named
+    /// 'operator='.
+    unsigned HasInheritedAssignment : 1;
+
     /// \brief These flags are \c true if a defaulted corresponding special
     /// member can't be fully analyzed without performing overload resolution.
     /// @{
@@ -1308,6 +1316,18 @@ public:
     return data().HasNonLiteralTypeFieldsOrBases;
   }
 
+  /// \brief Determine whether this class has a using-declaration that names
+  /// a base class constructor.
+  bool hasInheritedConstructor() const {
+    return data().HasInheritedConstructor;
+  }
+
+  /// \brief Determine whether this class has a using-declaration that names
+  /// a base class assignment operator.
+  bool hasInheritedAssignment() const {
+    return data().HasInheritedAssignment;
+  }
+
   /// \brief Determine whether this class is considered trivially copyable per
   /// (C++11 [class]p6).
   bool isTriviallyCopyable() const;