--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/third_party/libuv/test/test-ip-name.c	Wed Jan 14 19:39:52 2026 -0800
@@ -0,0 +1,65 @@
+/* Copyright The libuv project and contributors. All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#include "uv.h"
+#include "task.h"
+
+#include <stdio.h>
+#include <string.h>
+
+union TestAddr {
+    struct sockaddr addr;
+    struct sockaddr_in addr4;
+    struct sockaddr_in6 addr6;
+};
+
+
+TEST_IMPL(ip_name) {
+    char dst[INET6_ADDRSTRLEN];
+    union TestAddr test_addr;
+    struct sockaddr* addr = &test_addr.addr;
+    struct sockaddr_in* addr4 = &test_addr.addr4;
+    struct sockaddr_in6* addr6 = &test_addr.addr6;
+
+    /* test ip4_name */
+    ASSERT_OK(uv_ip4_addr("192.168.0.1", TEST_PORT, addr4));
+    ASSERT_OK(uv_ip4_name(addr4, dst, INET_ADDRSTRLEN));
+    ASSERT_OK(strcmp("192.168.0.1", dst));
+
+    ASSERT_OK(uv_ip_name(addr, dst, INET_ADDRSTRLEN));
+    ASSERT_OK(strcmp("192.168.0.1", dst));
+
+    /* test ip6_name */
+    ASSERT_OK(uv_ip6_addr("fe80::2acf:daff:fedd:342a", TEST_PORT, addr6));
+    ASSERT_OK(uv_ip6_name(addr6, dst, INET6_ADDRSTRLEN));
+    ASSERT_OK(strcmp("fe80::2acf:daff:fedd:342a", dst));
+
+    ASSERT_OK(uv_ip_name(addr, dst, INET6_ADDRSTRLEN));
+    ASSERT_OK(strcmp("fe80::2acf:daff:fedd:342a", dst));
+
+    /* test other sa_family */
+    addr->sa_family = AF_UNIX;
+    /* size is not a concern here */
+    ASSERT_EQ(UV_EAFNOSUPPORT, uv_ip_name(addr, dst, INET6_ADDRSTRLEN));
+
+    MAKE_VALGRIND_HAPPY(uv_default_loop());
+    return 0;
+}