1// RUN: %clang_cc1 %s -fsyntax-only -verify
2// PR4290
3
4// The following declaration is not compatible with vfprintf(), but make
5// sure this isn't an error: autoconf expects this to build.
6char vfprintf(); // expected-warning {{incompatible redeclaration of library function 'vfprintf'}} expected-note {{'vfprintf' is a builtin}}
7