clang/test/CXX/class.derived/class.abstract/p5.cpp

   1 // RUN: %clang_cc1 -fsyntax-only -verify %s
   2
   3 struct A {
   4   virtual void f() = 0; // expected-note{{unimplemented pure virtual method}}
   5 };
   6
   7 struct B : A {
   8   virtual void f();
   9 };
  10
  11 struct C : B {
  12   virtual void f() = 0; // expected-note 2{{unimplemented pure virtual method}}
  13 };
  14
  15 struct D : C {
  16 };
  17
  18 void test() {
  19   (void)new A; // expected-error{{abstract class}}
  20   (void)new B;
  21   (void)new C; // expected-error{{abstract class}}
  22   (void)new D; // expected-error{{abstract class}}
  23 }