1 files changed, 16 insertions, 0 deletions
diff --git a/string/tester.c b/string/tester.c
index 778160ae6e..605b3f00f9 100644
--- a/string/tester.c
+++ b/string/tester.c
@@ -1450,6 +1450,19 @@ test_bcmp (void)
 }
 
 static void
+test_memcmpeq (void)
+{
+  it = "__memcmpeq";
+  check (__memcmpeq ("a", "a", 1) == 0, 1); /* Identity.  */
+  check (__memcmpeq ("abc", "abc", 3) == 0, 2); /* Multicharacter.  */
+  check (__memcmpeq ("abcd", "abce", 4) != 0, 3); /* Honestly unequal.  */
+  check (__memcmpeq ("abce", "abcd", 4) != 0, 4);
+  check (__memcmpeq ("alph", "beta", 4) != 0, 5);
+  check (__memcmpeq ("abce", "abcd", 3) == 0, 6); /* Count limited.  */
+  check (__memcmpeq ("abc", "def", 0) == 0, 8); /* Zero count.  */
+}
+
+static void
 test_strerror (void)
 {
   it = "strerror";
@@ -1611,6 +1624,9 @@ main (void)
   /* bcmp - somewhat like memcmp.  */
   test_bcmp ();
 
+  /* __memcmpeq - somewhat like memcmp.  */
+  test_memcmpeq ();
+
   /* strndup.  */
   test_strndup ();