1*f4a2713aSLionel Sambuc // RUN: %clang_cc1 -fsyntax-only -verify %s 2*f4a2713aSLionel Sambuc 3*f4a2713aSLionel Sambuc class string; f(const string & s,...)4*f4a2713aSLionel Sambucvoid f(const string& s, ...) { // expected-note {{parameter of type 'const string &' is declared here}} 5*f4a2713aSLionel Sambuc __builtin_va_list ap; 6*f4a2713aSLionel Sambuc __builtin_va_start(ap, s); // expected-warning {{'va_start' has undefined behavior with reference types}} 7*f4a2713aSLionel Sambuc } 8