This patch is needed to allow builds with newer versions of the GNU libc (2.16+). The upstream fix was: commit 66712c23388e93e5c518ebc8515140fa0c807348 Author: Eric Blake <eblake@redhat.com> Date: Thu Mar 29 13:30:41 2012 -0600 stdio: don't assume gets any more Gnulib intentionally does not have a gets module, and now that C11 and glibc have dropped it, we should be more proactive about warning any user on a platform that still has a declaration of this dangerous interface. * m4/stdio_h.m4 (gl_STDIO_H, gl_STDIO_H_DEFAULTS): Drop gets support. * modules/stdio (Makefile.am): Likewise. * lib/stdio-read.c (gets): Likewise. * tests/test-stdio-c++.cc: Likewise. * m4/warn-on-use.m4 (gl_WARN_ON_USE_PREPARE): Fix comment. * lib/stdio.in.h (gets): Make warning occur in more places. * doc/posix-functions/gets.texi (gets): Update documentation. Reported by Christer Solskogen. Signed-off-by: Eric Blake <eblake@redhat.com> This patch just gets rid of the offending part. --- m4-1.4.16/lib/stdio.in.h.orig 2012-09-01 01:05:36.000000000 +0200 +++ m4-1.4.16/lib/stdio.in.h 2012-09-01 01:05:42.000000000 +0200 @@ -158,12 +158,6 @@ _GL_WARN_ON_USE (fflush, "fflush is not "use gnulib module fflush for portable POSIX compliance"); #endif -/* It is very rare that the developer ever has full control of stdin, - so any use of gets warrants an unconditional warning. Assume it is - always declared, since it is required by C89. */ -#undef gets -_GL_WARN_ON_USE (gets, "gets is a security hole - use fgets instead"); - #if @GNULIB_FOPEN@ # if @REPLACE_FOPEN@ # if !(defined __cplusplus && defined GNULIB_NAMESPACE)