; RUN: llvm-undname < %s | FileCheck %s

; CHECK-NOT: Invalid mangled name

?f@C@@WBA@EAAHXZ
; CHECK: [thunk]: public: virtual int __cdecl C::f`adjustor{16}'(void)

??_EDerived@@$4PPPPPPPM@A@EAAPEAXI@Z
; CHECK: [thunk]: public: virtual void * __cdecl Derived::`vector deleting dtor'`vtordisp{-4, 0}'(unsigned int)

?f@A@simple@@$R477PPPPPPPM@7AEXXZ
; CHECK: [thunk]: public: virtual void __thiscall simple::A::f`vtordispex{8, 8, -4, 8}'(void)

??_9Base@@$B7AA
; CHECK: [thunk]: __cdecl Base::`vcall'{8, {flat}}