Use a qobject_cast to prevent accessing a not available function.
Task-number: QTCREATORBUG-20910
Change-Id: If2aa6b7b120379681e9590db80904c45a6d9bd55
Reviewed-by: Christian Stenger <christian.stenger@qt.io>
Move FollowSymbolUnderCursor to CppTools and
builtin member ownership to internal model manager.
Change-Id: I97a4f744ec1709ccc0b34fb67b58680973ef566f
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@qt.io>