From 16d93ff354479c54059de355c5a6b4e899aef0f6 Mon Sep 17 00:00:00 2001
From: Niels Dossche <7771979+nielsdos@users.noreply.github.com>
Date: Mon, 9 Jun 2025 17:49:27 +0200
Subject: [PATCH] Fix 'phpdbg --help' segfault on shutdown with
 USE_ZEND_ALLOC=0

This hack not only breaks the handling of custom allocators, but also
breaks if zend_alloc is compiled with USE_CUSTOM_MM.
This hack is just no good, if you want leak information then use ASAN.
---
 sapi/phpdbg/phpdbg.c | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/sapi/phpdbg/phpdbg.c b/sapi/phpdbg/phpdbg.c
index 5a4dd6acdbe2f..f27d87de84187 100644
--- a/sapi/phpdbg/phpdbg.c
+++ b/sapi/phpdbg/phpdbg.c
@@ -179,12 +179,6 @@ static PHP_MSHUTDOWN_FUNCTION(phpdbg) /* {{{ */
 		phpdbg_notice("Script ended normally");
 	}
 
-	/* hack to restore mm_heap->use_custom_heap in order to receive memory leak info */
-	if (use_mm_wrappers) {
-		/* ASSUMING that mm_heap->use_custom_heap is the first element of the struct ... */
-		*(int *) zend_mm_get_heap() = 0;
-	}
-
 	if (PHPDBG_G(buffer)) {
 		free(PHPDBG_G(buffer));
 		PHPDBG_G(buffer) = NULL;