1*f4a2713aSLionel Sambuc // RUN: %clang_cc1 %s -fsyntax-only -verify 2*f4a2713aSLionel Sambuc // PR4290 3*f4a2713aSLionel Sambuc 4*f4a2713aSLionel Sambuc // The following declaration is not compatible with vfprintf(), but make 5*f4a2713aSLionel Sambuc // sure this isn't an error: autoconf expects this to build. 6*f4a2713aSLionel Sambuc char vfprintf(); // expected-warning {{incompatible redeclaration of library function 'vfprintf'}} expected-note {{'vfprintf' is a builtin}} 7