[src/trunk]: src/tests/lib/libc/string Add two test cases that should cover P...

[martin <martin%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/4bdfb9eb424f
branches:  trunk
changeset: 340536:4bdfb9eb424f
user:      martin <martin%NetBSD.org@localhost>
date:      Fri Sep 11 09:25:52 2015 +0000

description:
Add two test cases that should cover PR 50228.

diffstat:

 tests/lib/libc/string/t_memset.c |  52 ++++++++++++++++++++++++++++++++++++++-
 1 files changed, 50 insertions(+), 2 deletions(-)

diffs (87 lines):

diff -r 45921c843c09 -r 4bdfb9eb424f tests/lib/libc/string/t_memset.c
--- a/tests/lib/libc/string/t_memset.c  Fri Sep 11 08:02:20 2015 +0000
+++ b/tests/lib/libc/string/t_memset.c  Fri Sep 11 09:25:52 2015 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: t_memset.c,v 1.3 2013/03/17 02:23:31 christos Exp $ */
+/* $NetBSD: t_memset.c,v 1.4 2015/09/11 09:25:52 martin Exp $ */
 
 /*-
  * Copyright (c) 2011 The NetBSD Foundation, Inc.
@@ -29,7 +29,7 @@
  * POSSIBILITY OF SUCH DAMAGE.
  */
 #include <sys/cdefs.h>
-__RCSID("$NetBSD: t_memset.c,v 1.3 2013/03/17 02:23:31 christos Exp $");
+__RCSID("$NetBSD: t_memset.c,v 1.4 2015/09/11 09:25:52 martin Exp $");
 
 #include <sys/stat.h>
 
@@ -42,6 +42,8 @@
 static void    fill(char *, size_t, char);
 static bool    check(char *, size_t, char);
 
+int zero;      /* always zero, but the compiler does not know */
+
 ATF_TC(memset_array);
 ATF_TC_HEAD(memset_array, tc)
 {
@@ -133,6 +135,50 @@
        free(buf);
 }
 
+ATF_TC(memset_zero_size);
+
+ATF_TC_HEAD(memset_zero_size, tc)
+{
+       atf_tc_set_md_var(tc, "descr", "Test memset(3) with zero size");
+}
+
+ATF_TC_BODY(memset_zero_size, tc)
+{
+       char buf[1024];
+
+       (void)memset(buf, 'x', sizeof(buf));
+
+       if (check(buf, sizeof(buf), 'x') != true)
+               atf_tc_fail("memset(3) did not fill a static buffer");
+
+       (void)memset(buf+sizeof(buf)/2, 0, zero);
+
+       if (check(buf, sizeof(buf), 'x') != true)
+               atf_tc_fail("memset(3) with 0 size did change the buffer");
+}
+
+ATF_TC(bzero_zero_size);
+
+ATF_TC_HEAD(bzero_zero_size, tc)
+{
+       atf_tc_set_md_var(tc, "descr", "Test bzero(3) with zero size");
+}
+
+ATF_TC_BODY(bzero_zero_size, tc)
+{
+       char buf[1024];
+
+       (void)memset(buf, 'x', sizeof(buf));
+
+       if (check(buf, sizeof(buf), 'x') != true)
+               atf_tc_fail("memset(3) did not fill a static buffer");
+
+       (void)bzero(buf+sizeof(buf)/2, zero);
+
+       if (check(buf, sizeof(buf), 'x') != true)
+               atf_tc_fail("bzero(3) with 0 size did change the buffer");
+}
+
 ATF_TC(memset_struct);
 ATF_TC_HEAD(memset_struct, tc)
 {
@@ -202,6 +248,8 @@
        ATF_TP_ADD_TC(tp, memset_nonzero);
        ATF_TP_ADD_TC(tp, memset_struct);
        ATF_TP_ADD_TC(tp, memset_return);
+       ATF_TP_ADD_TC(tp, memset_zero_size);
+       ATF_TP_ADD_TC(tp, bzero_zero_size);
 
        return atf_no_error();
 }