From 03d73182d9afc0ddbd4134e69750daf080585a37 Mon Sep 17 00:00:00 2001
From: Niels Dossche <7771979+nielsdos@users.noreply.github.com>
Date: Fri, 19 Jul 2024 13:13:51 +0200
Subject: [PATCH] Fix GH-15020: Memory leak in Zend/Optimizer/escape_analysis.c

Closes GH-15022.
---
 NEWS                             | 4 ++++
 Zend/Optimizer/escape_analysis.c | 1 +
 2 files changed, 5 insertions(+)

diff --git a/NEWS b/NEWS
index e82ffc50426..ec7c542a11f 100644
--- a/NEWS
+++ b/NEWS
@@ -2,6 +2,10 @@ PHP                                                                        NEWS
 |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
 ?? ??? ????, PHP 8.2.23
 
+- Core:
+  . Fixed bug GH-15020 (Memory leak in Zend/Optimizer/escape_analysis.c).
+    (nielsdos)
+
 - Curl:
   . Fixed case when curl_error returns an empty string.
     (David Carlier)
diff --git a/Zend/Optimizer/escape_analysis.c b/Zend/Optimizer/escape_analysis.c
index b7c0a5ec446..4bb2b58af77 100644
--- a/Zend/Optimizer/escape_analysis.c
+++ b/Zend/Optimizer/escape_analysis.c
@@ -400,6 +400,7 @@ zend_result zend_ssa_escape_analysis(const zend_script *script, zend_op_array *o
 	}
 
 	if (zend_build_equi_escape_sets(ees, op_array, ssa) == FAILURE) {
+		free_alloca(ees, use_heap);
 		return FAILURE;
 	}