#25072 [Fbk->NoF]: include and user_space stream

ID: 25072 Updated by: sniper@php.net Reported By: eduard at sitesupra dot com -Status: Feedback +Status: No Feedback Bug Type: Reproducible crash Operating System: WinXP PHP Version: 4.3.3RC4-dev New Comment: No feedback was provided. The bug is being suspended because we assume that you are no longer experiencing the problem. If this is not the case and you are able to provide the information that was requested earlier, please do so and change the status of the bug back to "Open". Thank you. Previous Comments: ------------------------------------------------------------------------ [2003-08-13 13:52:57] pollita@php.net As another developer just reminded me, generating backtraces on windows isn't an option. You mention having access to a linux machine, can you recompile your PHP on that box using the configure option "--enable-experimental-zts" (this will make it behave like its Win32 counterpart) and see if its possible to recreate the crash there. If so generate a backtrace from that please. ------------------------------------------------------------------------ [2003-08-13 13:26:31] pollita@php.net Thank you for this bug report. To properly diagnose the problem, we need a backtrace to see what is happening behind the scenes. To find out how to generate a backtrace, please read http://bugs.php.net/bugs-generating-backtrace.php Once you have generated a backtrace, please submit it to this bug report and change the status back to "Open". Thank you for helping us make PHP better. On the first point, the extra reads are include() being cautious. It doesn't EXPECT any data, but on the off chance the EOF status changed (socket streams are allowed to do that) it double checks. As to the crash though, that definately shouldn't be happening. Could you provide a backtrace using the instructions above? It'll help track the problem down. ------------------------------------------------------------------------ [2003-08-13 05:49:41] eduard at sitesupra dot com on 4.3.3RC4-dev same result as 4.3.2 ------------------------------------------------------------------------ [2003-08-13 05:30:36] sniper@php.net Please try using this CVS snapshot: http://snaps.php.net/php4-STABLE-latest.tar.gz For Windows: http://snaps.php.net/win32/php4-win32-STABLE-latest.zip ------------------------------------------------------------------------ [2003-08-13 05:26:23] eduard at sitesupra dot com Description: ------------ On windows: When you have include() from userstream result of stream_eof() is ignored and stream_read() called 2 times more When few requests occur simultaneosly - apache crushes. On Linux - this works correctly Reproduce code: --------------- <?php class userstream { var $position = 0; var $data = "If you can read this, it worked"; function stream_open($path, $mode, $options, &$opened_path) { return true; } function stream_read($count) { $ret = substr($this->data, $this->position, $count); $this->position += strlen($ret); echo "READ {$this->position}\n"; return $ret; } function stream_eof() { echo "EOF\n"; return $this->position >= strlen($this->data); } function stream_seek($offset,$whence) { echo "SEEK\n"; } function stream_tell() { echo "TELL\n"; return $this->position; } function stream_stat() { echo "STAT\n"; return NULL; } function stream_close() { echo "CLOSE\n"; } } stream_register_wrapper("cookietest", "userstream"); include("cookietest://foo"); ?> Expected result: ---------------- SEEK TELL READ 31 EOF CLOSE If you can read this, it worked Actual result: -------------- SEEK TELL STAT READ 31 EOF READ 31 EOF READ 31 EOF CLOSE If you can read this, it worked ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=25072&edit=1