extension on a leaf with ipv4-prefix type

[jeremie6wind]

Hello,

I ran into this issue when there is an extension in the ipvx-prefix or ipvx-address-and-prefix types.

the type->name in lyplg_type_store_ipv4_address_prefix is null and the strcmp crashes.

Here is a patch to reproduce:

From 6836f69a35ae2ad3fd0a393d4f4afad145808320 Mon Sep 17 00:00:00 2001
From: Jeremie Leska <jeremie.leska@6wind.com>
Date: Wed, 18 Mar 2026 17:36:57 +0100
Subject: [PATCH] extension in ipv4-prefix type

---
 tests/utests/types/inet_types.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tests/utests/types/inet_types.c b/tests/utests/types/inet_types.c
index c34ac2783d25..2ab2f0c06537 100644
--- a/tests/utests/types/inet_types.c
+++ b/tests/utests/types/inet_types.c
@@ -38,6 +38,7 @@
     "  import ietf-inet-types {\n" \
     "    prefix inet;\n" \
     "  }\n" \
+    "  extension myext;\n" \
     NODES \
     "}\n"
 
@@ -103,7 +104,7 @@ test_data_xml(void **state)
             "leaf l3 {type inet:ip-address-no-zone;}"
             "leaf l4 {type inet:ipv6-address-no-zone;}"
             "leaf l5 {type inet:ip-prefix;}"
-            "leaf l6 {type inet:ipv4-prefix;}"
+            "leaf l6 {type inet:ipv4-prefix{pref:myext;}}"
             "leaf l7 {type inet:ipv6-prefix;}");
     UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
 
-- 
2.39.2

Thank you
Best regards
Jeremie

[michalvasko]

Right, fixed.