Bug #65060 [Fbk]: imagecreatefrom... crashes with user streams

Edit report at https://bugs.php.net/bug.php?id=65060&edit=1 ID: 65060 Updated by: pajoye@php.net Reported by: thekid@php.net Summary: imagecreatefrom... crashes with user streams Status: Feedback Type: Bug Package: GD related -Operating System: Linux +Operating System: gentoo PHP Version: 5.5.0RC3 Block user comment: N Private report: N New Comment: should have read more carefully :) So only the system or bundled gd question remains :) Previous Comments: ------------------------------------------------------------------------ [2013-06-19 08:35:49] pajoye@php.net g:\php-sdk\php-master\vc11\x86\php-src-clean>g:\temp\5.5.0rc3-nts\php -d extension_dir=g:\temp\5.5.0rc3-nts\ext\ -d extension=php_gd2.dll 65060.php Warning: imagecreatefromgif(): userstream::stream_cast is not implemented! in G:\php-sdk\php-master\vc11\x86\php-src-clean\65060.php on line 38 resource(7) of type (gd) do you use system's gd or bundled one? Can you try with the bundled one please (if system's is used). Which Distro do you use? ------------------------------------------------------------------------ [2013-06-19 08:08:43] thekid@php.net Description: ------------ When loading images via any of the imagecreatefrom...() functions and the argument given to them resolves to a userstream, a segmentation fault occurs on Linux systems (Travis CI's Linux image, 3.2.9-gentoo). With PHP 5.4, the same code works as expected. On Windows, the same code works as expected. See https://github.com/xp-framework/xp-framework/issues/310 Test script: --------------- <?php class userstream { public static $bytes= array(); public function stream_open($path, $mode, $options, $opened_path) { sscanf($path, 'iostrr://%s', $file); if (!isset(self::$bytes[$file])) return false; $this->buffer= self::$bytes[$file]; $this->avail= strlen($this->buffer); $this->length= strlen($this->buffer); return true; } public function stream_read($count) { $chunk= substr($this->buffer, 0, min($this->avail, $count)); $this->buffer= substr($this->buffer, strlen($chunk)); $this->avail-= strlen($chunk); return $chunk; } public function stream_stat() { return array('size' => $this->length); } public function stream_eof() { return $this->avail <= 0; } public function stream_close() { $this->avail= -1; } } userstream::$bytes['test.gif']= base64_decode('R0lGODdhAQABAIAAAP///wAAACwAAAAAAQABAAACAkQBADs='); stream_wrapper_register('iostrr', 'userstream'); var_dump(imagecreatefromgif('iostrr://test.gif')); Expected result: ---------------- resource(6) of type (gd) Actual result: -------------- Segmentation fault Program received signal SIGSEGV, Segmentation fault. 0x00005555558b2d77 in _php_stream_seek (stream=0x7fffefc6d6b0, offset=-1, whence=1) at /home/friebe/php/php-src/main/streams/streams.c:1273 1273 fflush(stream->stdiocast); (gdb) bt #0 0x00005555558b2d77 in _php_stream_seek (stream=0x7fffefc6d6b0, offset=-1, whence=1) at /home/friebe/php/php-src/main/streams/streams.c:1273 #1 0x00005555558b4fa0 in stream_cookie_seeker (cookie=<optimized out>, position=0x7fffff7ff458, whence=<optimized out>) at /home/friebe/php/php-src/main/streams/cast.c:117 #2 0x00007ffff6571fb6 in ?? () from /lib64/libc.so.6 #3 0x00007ffff657d1e5 in _IO_file_sync () from /lib64/libc.so.6 #4 0x00007ffff65718e1 in fflush () from /lib64/libc.so.6 ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=65060&edit=1