From 83b8d2c290d24221e95c8fa1dc57a1b85f21fb70 Mon Sep 17 00:00:00 2001
From: Gina Peter Banyard <girgias@php.net>
Date: Sat, 12 Jul 2025 18:30:08 +0100
Subject: [PATCH] ext/gd: Fix comparison with result of php_stream_can_cast()

Closes GH-19107
---
 NEWS        | 3 +++
 ext/gd/gd.c | 2 +-
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/NEWS b/NEWS
index 4bf10555b45..704398f5b6c 100644
--- a/NEWS
+++ b/NEWS
@@ -11,6 +11,9 @@ PHP                                                                        NEWS
 - FTP:
   . Fix theoretical issues with hrtime() not being available. (nielsdos)
 
+- GD:
+  . Fix incorrect comparison with result of php_stream_can_cast(). (Girgias)
+
 - Hash:
   . Fix crash on clone failure. (nielsdos)
 
diff --git a/ext/gd/gd.c b/ext/gd/gd.c
index 6b727a21118..cce2a5ca42f 100644
--- a/ext/gd/gd.c
+++ b/ext/gd/gd.c
@@ -1566,7 +1566,7 @@ static void _php_image_create_from(INTERNAL_FUNCTION_PARAMETERS, int image_type,
 		pefree(pstr, 1);
 		zend_string_release_ex(buff, 0);
 	}
-	else if (php_stream_can_cast(stream, PHP_STREAM_AS_STDIO)) {
+	else if (php_stream_can_cast(stream, PHP_STREAM_AS_STDIO) == SUCCESS) {
 		/* try and force the stream to be FILE* */
 		if (FAILURE == php_stream_cast(stream, PHP_STREAM_AS_STDIO | PHP_STREAM_CAST_TRY_HARD, (void **) &fp, REPORT_ERRORS)) {
 			goto out_err;