1 // RUN: %clang_cc1 -fsyntax-only -std=c++03 -verify %s
2 
3 class string;
f(const string & s,...)4 void f(const string& s, ...) {  // expected-note {{parameter of type 'const string &' is declared here}}
5   __builtin_va_list ap;
6   __builtin_va_start(ap, s); // expected-warning {{passing an object of reference type to 'va_start' has undefined behavior}}
7 }
8 
g(register int i,...)9 void g(register int i, ...) {
10   __builtin_va_list ap;
11   __builtin_va_start(ap, i); // okay
12 }
13