- fix for error: 'gets' undeclared here (not in a function) with recent libc

diff --git a/libprelude-gets.patch b/libprelude-gets.patch
new file mode 100644 (file)
index 0000000..74cd58c
--- /dev/null
+++ b/libprelude-gets.patch
@@ -0,0 +1,75 @@
+From f5fab01434b096b3bc2b058fec41123392eb3dcb Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Petr=20P=C3=ADsa=C5=99?= <ppisar@redhat.com>
+Date: Wed, 8 Aug 2012 14:13:16 +0200
+Subject: [PATCH] Fix building with glibc-2.16.6
+
+Ported to libprelude-1.0.0 from gnulib commit:
+
+From 66712c23388e93e5c518ebc8515140fa0c807348 Mon Sep 17 00:00:00 2001
+From: Eric Blake <eblake@redhat.com>
+Date: Thu, 29 Mar 2012 13:30:41 -0600
+Subject: [PATCH] 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.
+---
+ libmissing/m4/stdio_h.m4     | 4 ++--
+ libmissing/m4/warn-on-use.m4 | 4 ++--
+ libmissing/stdio.in.h        | 6 ++++--
+ 3 files changed, 8 insertions(+), 6 deletions(-)
+
+diff --git a/libmissing/m4/stdio_h.m4 b/libmissing/m4/stdio_h.m4
+index 781fa8d..fc65d37 100644
+--- a/libmissing/m4/stdio_h.m4
++++ b/libmissing/m4/stdio_h.m4
+@@ -34,9 +34,9 @@ AC_DEFUN([gl_STDIO_H],
+ 
+   dnl Check for declarations of anything we want to poison if the
+   dnl corresponding gnulib module is not in use, and which is not
+-  dnl guaranteed by C89.
++  dnl guaranteed by both C89 and C11.
+   gl_WARN_ON_USE_PREPARE([[#include <stdio.h>
+-    ]], [dprintf fpurge fseeko ftello getdelim getline popen renameat
++    ]], [dprintf fpurge fseeko ftello getdelim getline gets popen renameat
+     snprintf vdprintf vsnprintf])
+ ])
+ 
+diff --git a/libmissing/m4/warn-on-use.m4 b/libmissing/m4/warn-on-use.m4
+index ab46422..494e00b 100644
+--- a/libmissing/m4/warn-on-use.m4
++++ b/libmissing/m4/warn-on-use.m4
+@@ -18,8 +18,8 @@ dnl with or without modifications, as long as this notice is preserved.
+ # some systems declare functions in the wrong header, then INCLUDES
+ # should do likewise.
+ #
+-# If you assume C89, then it is generally safe to assume declarations
+-# for functions declared in that standard (such as gets) without
++# It is generally safe to assume declarations for functions declared
++# in the intersection of C89 and C11 (such as printf) without
+ # needing gl_WARN_ON_USE_PREPARE.
+ AC_DEFUN([gl_WARN_ON_USE_PREPARE],
+ [
+diff --git a/libmissing/stdio.in.h b/libmissing/stdio.in.h
+index f5d5d88..6924ef2 100644
+--- a/libmissing/stdio.in.h
++++ b/libmissing/stdio.in.h
+@@ -114,10 +114,12 @@ _GL_WARN_ON_USE (fflush, "fflush is not always POSIX compliant - "
+ #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.  */
++   so any use of gets warrants an unconditional warning; besides, C11
++   removed it.  */
+ #undef gets
++#if HAVE_RAW_DECL_GETS
+ _GL_WARN_ON_USE (gets, "gets is a security hole - use fgets instead");
++#endif
+ 
+ #if @GNULIB_FOPEN@
+ # if @REPLACE_FOPEN@
+-- 
+1.7.11.2
+