From 68f1098ef3c867ea1124e4847788c990a6dba227 Mon Sep 17 00:00:00 2001
From: Niels Dossche <7771979+nielsdos@users.noreply.github.com>
Date: Sun, 22 Dec 2024 21:34:32 +0100
Subject: [PATCH] Fix memory leak on ZEND_FFI_TYPE_CHAR conversion failure

The success path frees tmp_str, but the error path does not.
---
 ext/ffi/ffi.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/ext/ffi/ffi.c b/ext/ffi/ffi.c
index 2000e15c29ea1..d823f32127cfb 100644
--- a/ext/ffi/ffi.c
+++ b/ext/ffi/ffi.c
@@ -807,6 +807,7 @@ static zend_always_inline zend_result zend_ffi_zval_to_cdata(void *ptr, zend_ffi
 			if (ZSTR_LEN(str) == 1) {
 				*(char*)ptr = ZSTR_VAL(str)[0];
 			} else {
+				zend_tmp_string_release(tmp_str);
 				zend_ffi_assign_incompatible(value, type);
 				return FAILURE;
 			}