clang/test/SemaCXX/class-base-member-init.cpp

// RUN: %clang_cc1 -fsyntax-only -verify %s

class S {
public:
  S (); 
};

struct D : S {
  D() : b1(0), b2(1), b1(0), S(), S() {} // expected-error {{multiple initializations given for non-static member 'b1'}} \
                                         // expected-note {{previous initialization is here}}                  \
                                         // expected-error {{multiple initializations given for base 'S'}} \
                                         // expected-note {{previous initialization is here}}

  int b1;
  int b2;

};