From 01f8ac1bec69600041378c8b8aefe09214bf4ac1 Mon Sep 17 00:00:00 2001
From: Baptiste Daroussin <bapt@FreeBSD.org>
Date: Fri, 15 Jul 2016 23:24:00 +0000
Subject: [PATCH] Add a regression test about the crash with strxfrm and
 ISO8859-5 locales

---
 lib/libc/tests/string/Makefile       |  1 +
 lib/libc/tests/string/strxfrm_test.c | 51 ++++++++++++++++++++++++++++
 2 files changed, 52 insertions(+)
 create mode 100644 lib/libc/tests/string/strxfrm_test.c

diff --git a/lib/libc/tests/string/Makefile b/lib/libc/tests/string/Makefile
index ea2dfcff20f..72ba82aaf3f 100644
--- a/lib/libc/tests/string/Makefile
+++ b/lib/libc/tests/string/Makefile
@@ -5,6 +5,7 @@ ATF_TESTS_C+=		stpncpy_test
 ATF_TESTS_C+=		strerror2_test
 ATF_TESTS_C+=		wcscasecmp_test
 ATF_TESTS_C+=		wcsnlen_test
+ATF_TESTS_C+=		strxfrm_test
 
 # TODO: popcount, stresep
 
diff --git a/lib/libc/tests/string/strxfrm_test.c b/lib/libc/tests/string/strxfrm_test.c
new file mode 100644
index 00000000000..98f3b3bddee
--- /dev/null
+++ b/lib/libc/tests/string/strxfrm_test.c
@@ -0,0 +1,51 @@
+/*-
+ * Copyright (c) 2016 Baptiste Daroussin <bapt@FreeBSD.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <string.h>
+#include <locale.h>
+#include <stdio.h>
+
+#include <atf-c.h>
+
+ATF_TC_WITHOUT_HEAD(iso_8859_5);
+ATF_TC_BODY(iso_8859_5, tc)
+{
+	char s1[8];
+	const char s2[] = { 0xa1, 0 };
+
+	setlocale(LC_ALL, "ru_RU.ISO8859-5");
+	strxfrm(s1, s2, 0x8);
+}
+
+ATF_TP_ADD_TCS(tp)
+{
+	ATF_TP_ADD_TC(tp, iso_8859_5);
+
+	return (atf_no_error());
+}