iconv_open: Fix heap corruption on gconv_init failure [BZ #22026]

Also mangle the __end_fct function pointer on the error handling
path.

1 files changed, 23 insertions, 0 deletions

diff --git a/iconv/test-gconv-modules b/iconv/test-gconv-modules
new file mode 100644
index 0000000000..edacd8cb1d
--- /dev/null
+++ b/iconv/test-gconv-modules
@@ -0,0 +1,23 @@
+# Test modules for gconv.
+# Copyright (C) 2017 Free Software Foundation, Inc.
+# This file is part of the GNU C Library.
+
+# The GNU C Library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+
+# The GNU C Library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+
+# You should have received a copy of the GNU Lesser General Public
+# License along with the GNU C Library; if not, see
+# <http://www.gnu.org/licenses/>.
+
+# To activate these modules, tests need to put a directory with the
+# modules and a copy of this file (under the name gconv-modules) on
+# GCONV_PATH.
+
+module	TST-GCONV-INIT-FAILURE//	UTF-8//	tst-gconv-init-failure-mod