--- main/streams/cast.c.bak	2026-03-03 21:01:49.742036485 +0100
+++ main/streams/cast.c	2026-03-03 21:10:36.519494693 +0100
@@ -122,11 +122,16 @@
 	return 0;
 }
 # else
-static int stream_cookie_seeker(void *cookie, off_t position, int whence)
+static int stream_cookie_seeker(void *cookie, __off64_t *position, int whence)
 {
 	TSRMLS_FETCH();
 
-	return php_stream_seek((php_stream *)cookie, position, whence);
+	*position = php_stream_seek((php_stream *)cookie, (off_t)*position, whence);
+
+	if (*position == -1) {
+		return -1;
+	}
+	return 0;
 }
 # endif