#41888 [Asn->Fbk]: Segfault when attempting to update PDO LOB column in a stream wrapper

ID: 41888 Updated by: felipe@php.net Reported By: hans at velum dot net -Status: Assigned +Status: Feedback Bug Type: PDO related Operating System: Gentoo Linux PHP Version: 5.2.4 Assigned To: iliaa New Comment: Please try using this CVS snapshot: http://snaps.php.net/php5.2-latest.tar.gz For Windows: http://windows.php.net/snapshots/ Previous Comments: ------------------------------------------------------------------------ [2008-01-14 20:53:04] hans at velum dot net Any idea when this issue might get fixed? This is a big deal to us, since this bug prevents us from swapping out filesystem-based storage with a db-storage engine. ------------------------------------------------------------------------ [2007-10-01 20:04:40] hans at velum dot net Updating version to reflect that problem is still present in 5.2.4 ------------------------------------------------------------------------ [2007-09-06 13:40:07] hans at velum dot net Note, here is some revised reproduce code (there was a bug in the original code such that it was creating two DB connections): http://pastebin.com/f40fa427d Thanks! ------------------------------------------------------------------------ [2007-09-06 13:36:53] hans at velum dot net Any update on this ticket? I just confirmed that this is still segfaulting in latest 5.2.4 PHP release. ------------------------------------------------------------------------ [2007-07-03 12:58:52] hans at velum dot net Description: ------------ I am trying to use PDO LOB columns with PostgreSQL within a user-defined stream wrapper class. PDO is correctly handling the LOB with PostgreSQL as stream resources; however, when I attempt to update a LOB column using another stream (e.g. php://temp, php://memory) in my stream_flush() command, I get a segmentation fault. Reproduce code: --------------- I was able to create a basic reproduce case; however, it is more than 20 lines of code. Here is a link to a snippet that creates the stream wrapper and attempts to perform an update: http://pastebin.com/941246 This consistently segfaults in my environment. Expected result: ---------------- No segfault. Actual result: -------------- Segfault. I have PHP compiled w/ debug flags; however, the backtrace in this case is very unhelpful. Program terminated with signal 11, Segmentation fault. #0 0x0830aabd in _zval_dtor_func () (gdb) bt #0 0x0830aabd in _zval_dtor_func () #1 0x082fdf90 in ?? () #2 0x0870bf34 in ?? () #3 0x085bdec4 in ?? () #4 0x00000023 in ?? () #5 0x085c0268 in ?? () #6 0x00000001 in ?? () #7 0x00000001 in ?? () #8 0xbf8f0108 in ?? () #9 0x082fe146 in _zval_ptr_dtor () Backtrace stopped: frame did not save the PC (gdb) ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=41888&edit=1