Extract fully qualified named from source without buffer

'name.ndata' should point to the source.

diff --git a/tests/dns/name_test.c b/tests/dns/name_test.c
index 54078921a213af8a974f65237692628c38b91f8f..c044ff993660c786c611097a4114580ccf857946 100644 (file)
--- a/tests/dns/name_test.c
+++ b/tests/dns/name_test.c
@@ -476,6 +476,19 @@ ISC_RUN_TEST_IMPL(fromregion) {
        assert_int_equal(9, name.length);
        assert_ptr_equal(target, name.ndata);
        assert_true(dns_name_isabsolute(&name));
+
+       /*
+        * Extract the fully qualified name at the beginning of 'source'
+        * into 'name' where 'name.ndata' points to the source.
+        */
+       isc_buffer_init(&b, target, sizeof(target));
+       dns_name_init(&name, NULL);
+       r.base = source;
+       r.length = sizeof(source);
+       dns_name_fromregion(&name, &r);
+       assert_int_equal(9, name.length);
+       assert_ptr_equal(source, name.ndata);
+       assert_true(dns_name_isabsolute(&name));
 }
 
 /* is trust-anchor-telemetry test */