From 6a0945b3337c8ef32b6332a6aaca7ae61002e40f Mon Sep 17 00:00:00 2001
From: jhnh204 <51738134+jhnh204@users.noreply.github.com>
Date: Sun, 15 Jun 2025 05:16:20 +0900
Subject: [PATCH] src: fix nullptr dereference in uv__print_handles (#4805)

---
 src/uv-common.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/src/uv-common.c b/src/uv-common.c
index 60ff56b9d..bff9d9ee1 100644
--- a/src/uv-common.c
+++ b/src/uv-common.c
@@ -575,12 +575,17 @@ static void uv__print_handles(uv_loop_t* loop, int only_active, FILE* stream) {
   struct uv__queue* q;
   uv_handle_t* h;
 
-  if (loop == NULL)
-    loop = uv_default_loop();
-
   if (stream == NULL)
     stream = stderr;
 
+  if (loop == NULL) {
+    loop = uv_default_loop();
+    if (loop == NULL) {
+      fprintf(stream, "uv_default_loop() failed\n");
+      return;
+    }
+  }
+
   uv__queue_foreach(q, &loop->handle_queue) {
     h = uv__queue_data(q, uv_handle_t, handle_queue);