From:             remi
Operating system: GNU/Linux
PHP version:      5.4.7
Package:          ODBC related
Bug Type:         Bug
Bug description:Script hangs after max_execution_time

Description:
------------
As unixODBC functions are not async-signal-safe, nor safe to be longjmp'ed
out, If a timeout occurs during an odbc calls, with a lock set, the PHP
script will hangs.

I have a patch proposal, will submit a pull request.

Test script:
---------------
<?php
ini_set('max_execution_time', '1');
$db = odbc_connect('MySQL-test', 'root', '');
if (!$db) {
    print "failed to connect\n";
} else {
    while(true) {
        echo ".";
        $result = odbc_exec($db, 'SELECT * FROM mysql.user');
    }
}


Expected result:
----------------
$ php test.php
.............................................................................
.............................................................................
.............................................................................
.............................................................................
.............................................................................
....PHP Fatal error:  Maximum execution time of 1 second exceeded in
/home/rcollet/git/php/php/Regression/bz594813-ODBC-execution-timeout-hang/bz594813.php
on line 10
$ 

Actual result:
--------------
Same output, but script hangs, need to be killed.


-- 
Edit bug report at https://bugs.php.net/bug.php?id=63171&edit=1
-- 
Try a snapshot (PHP 5.4):   
https://bugs.php.net/fix.php?id=63171&r=trysnapshot54
Try a snapshot (PHP 5.3):   
https://bugs.php.net/fix.php?id=63171&r=trysnapshot53
Try a snapshot (trunk):     
https://bugs.php.net/fix.php?id=63171&r=trysnapshottrunk
Fixed in SVN:               https://bugs.php.net/fix.php?id=63171&r=fixed
Fixed in release:           https://bugs.php.net/fix.php?id=63171&r=alreadyfixed
Need backtrace:             https://bugs.php.net/fix.php?id=63171&r=needtrace
Need Reproduce Script:      https://bugs.php.net/fix.php?id=63171&r=needscript
Try newer version:          https://bugs.php.net/fix.php?id=63171&r=oldversion
Not developer issue:        https://bugs.php.net/fix.php?id=63171&r=support
Expected behavior:          https://bugs.php.net/fix.php?id=63171&r=notwrong
Not enough info:            
https://bugs.php.net/fix.php?id=63171&r=notenoughinfo
Submitted twice:            
https://bugs.php.net/fix.php?id=63171&r=submittedtwice
register_globals:           https://bugs.php.net/fix.php?id=63171&r=globals
PHP 4 support discontinued: https://bugs.php.net/fix.php?id=63171&r=php4
Daylight Savings:           https://bugs.php.net/fix.php?id=63171&r=dst
IIS Stability:              https://bugs.php.net/fix.php?id=63171&r=isapi
Install GNU Sed:            https://bugs.php.net/fix.php?id=63171&r=gnused
Floating point limitations: https://bugs.php.net/fix.php?id=63171&r=float
No Zend Extensions:         https://bugs.php.net/fix.php?id=63171&r=nozend
MySQL Configuration Error:  https://bugs.php.net/fix.php?id=63171&r=mysqlcfg

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