add memset(buf, -5, 10) test

see https://sourceware.org/bugzilla/show_bug.cgi?id=16554

diff --git a/src/functional/string_memset.c b/src/functional/string_memset.c
index 719f0ca..5036d23 100644 (file)
--- a/src/functional/string_memset.c
+++ b/src/functional/string_memset.c
@@ -63,6 +63,7 @@ int main(void)
        test_value('c');
        test_value(0);
        test_value(-1);
+       test_value(-5);
        test_value(0xab);
        return t_status;
 }