From 9225f8bb28d291b1610c8a58e3233aa6bbdc1808 Mon Sep 17 00:00:00 2001
From: Tomasz Pankowski <tomasz.pankowski@gmail.com>
Date: Sat, 5 Apr 2025 00:13:34 +0200
Subject: [PATCH] fix: explicitly delete error references to prevent memory
 leaks

Add explicit "del error" statement to prevent reference cycles between
exception objects and local variables. This helps the garbage collector
promptly reclaim memory after request processing, which is especially
important in high-traffic web applications where exception objects with
traceback information can consume significant memory.
---
 src/flask/app.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/flask/app.py b/src/flask/app.py
index d2743c41..922b44fd 100644
--- a/src/flask/app.py
+++ b/src/flask/app.py
@@ -1525,6 +1525,7 @@ class Flask(App):
                 error = None
 
             ctx.pop(error)
+            del error
 
     def __call__(
         self, environ: WSGIEnvironment, start_response: StartResponse