1--TEST-- 2GH-16232 (Overflow on reading wbmp content) 3--EXTENSIONS-- 4gd 5--FILE-- 6<?php 7$good_webp = __DIR__ . '/src.wbmp'; 8$bad_webp = __DIR__ . "/gh16232.webp"; 9copy($good_webp, $bad_webp); 10var_dump(imagecreatefromwbmp($bad_webp)); 11$data = file_get_contents($bad_webp); 12$data[3] = chr(-1); 13file_put_contents($bad_webp, $data); 14var_dump(imagecreatefromwbmp($bad_webp)); 15$data[3] = chr(1000); 16file_put_contents($bad_webp, $data); 17var_dump(imagecreatefromwbmp($bad_webp)); 18unlink($bad_webp); 19--EXPECTF-- 20object(GdImage)#1 (0) { 21} 22 23Warning: imagecreatefromwbmp(): "%s" is not a valid WBMP file in %s on line %d 24bool(false) 25 26Warning: imagecreatefromwbmp(): "%s" is not a valid WBMP file in %s on line %d 27bool(false) 28
