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authorUlrich Drepper <drepper@redhat.com>2008-05-11 08:55:42 +0000
committerUlrich Drepper <drepper@redhat.com>2008-05-11 08:55:42 +0000
commit3490f01de4df5e6b21a9da5a566913f20326fa7a (patch)
tree1a891e9a54a2390486337dc318700c109ab98c1c /string
parentcdffaaa61555d4b1b102b1a86be7f257be405ed6 (diff)
downloadglibc-3490f01de4df5e6b21a9da5a566913f20326fa7a.tar.gz
* string/tester.c (test_memcmp): Add a few more tests.
Patch by Mats Erik Andersson <ynglingatal@comhem.se>.
Diffstat (limited to 'string')
-rw-r--r--string/tester.c34
1 files changed, 26 insertions, 8 deletions
diff --git a/string/tester.c b/string/tester.c
index 1c0efe07d4..773e969a35 100644
--- a/string/tester.c
+++ b/string/tester.c
@@ -985,15 +985,33 @@ test_strsep (void)
static void
test_memcmp (void)
{
+ int cnt = 1;
+ char one[21];
+ char two[21];
+
it = "memcmp";
- check(memcmp("a", "a", 1) == 0, 1); /* Identity. */
- check(memcmp("abc", "abc", 3) == 0, 2); /* Multicharacter. */
- check(memcmp("abcd", "abce", 4) < 0, 3); /* Honestly unequal. */
- check(memcmp("abce", "abcd", 4) > 0, 4);
- check(memcmp("alph", "beta", 4) < 0, 5);
- check(memcmp("a\203", "a\003", 2) > 0, 6);
- check(memcmp("abce", "abcd", 3) == 0, 7); /* Count limited. */
- check(memcmp("abc", "def", 0) == 0, 8); /* Zero count. */
+ check(memcmp("a", "a", 1) == 0, cnt++); /* Identity. */
+ check(memcmp("abc", "abc", 3) == 0, cnt++); /* Multicharacter. */
+ check(memcmp("abcd", "abcf", 4) < 0, cnt++); /* Honestly unequal. */
+ check(memcmp("abcf", "abcd", 4) > 0, cnt++);
+ check(memcmp("alph", "cold", 4) < 0, cnt++);
+ check(memcmp("a\203", "a\003", 2) > 0, cnt++);
+ check(memcmp("a\003", "a\203", 2) < 0, cnt++);
+ check(memcmp("a\003bc", "a\203bc", 2) < 0, cnt++);
+ check(memcmp("abc\203", "abc\003", 4) > 0, cnt++);
+ check(memcmp("abc\003", "abc\203", 4) < 0, cnt++);
+ check(memcmp("abcf", "abcd", 3) == 0, cnt++); /* Count limited. */
+ check(memcmp("abc", "def", 0) == 0, cnt++); /* Zero count. */
+ /* Comparisons with shifting 4-byte boundaries. */
+ for (int i = 0; i < 4; ++i)
+ {
+ char *a = one + i;
+ char *b = two + i;
+ strncpy(a, "--------11112222", 16);
+ strncpy(b, "--------33334444", 16);
+ check(memcmp(b, a, 16) > 0, cnt++);
+ check(memcmp(a, b, 16) < 0, cnt++);
+ }
}
static void