diff -ur m4-1.4.16.orig/lib/stdio.in.h m4-1.4.16/lib/stdio.in.h --- m4-1.4.16.orig/lib/stdio.in.h 2011-03-01 17:39:29.000000000 +0100 +++ m4-1.4.16/lib/stdio.in.h 2012-07-23 09:28:57.945703705 +0200 @@ -162,7 +162,9 @@ so any use of gets warrants an unconditional warning. Assume it is always declared, since it is required by C89. */ #undef gets +#if defined(__GLIBC__) && !defined(__UCLIBC__) && !__GLIBC_PREREQ(2, 16) _GL_WARN_ON_USE (gets, "gets is a security hole - use fgets instead"); +#endif #if @GNULIB_FOPEN@ # if @REPLACE_FOPEN@