Bug #62210 [ReO->Csd]: Exceptions can leak temporary variables

Edit report at https://bugs.php.net/bug.php?id=62210&edit=1 ID: 62210 Updated by: dmitry@php.net Reported by: nikic@php.net Summary: Exceptions can leak temporary variables -Status: Re-Opened +Status: Closed Type: Bug Package: Scripting Engine problem PHP Version: Irrelevant Assigned To: dmitry Block user comment: N Private report: N New Comment: Fixed in master (for 7.1) by http://git.php.net/?p=php-src.git;a=commitdiff;h=3a5fa926bfc409963f500144ea6d5e890e712a86 Previous Comments: ------------------------------------------------------------------------ [2015-07-10 10:31:47] ab@php.net Automatic comment on behalf of ab Revision: http://git.php.net/?p=php-src.git;a=commit;h=ad8a73dd55c087de465ad80e8715611693bb1460 Log: Revert "Fixed bug #62210 (Exceptions can leak temporary variables. As a part of the fix serious refactoring was done. op_array->brk_cont_array was removed, and replaced with more general and speed efficient op_array->T_liveliness. ZEND_GOTO opcode is always replaced by ZEND_JMP at compile time). (Bob, Dmitry, Laruence)" ------------------------------------------------------------------------ [2015-07-10 01:58:51] dmitry@php.net The fix was reverted. ------------------------------------------------------------------------ [2015-07-07 23:36:51] ab@php.net Automatic comment on behalf of dmitry@zend.com Revision: http://git.php.net/?p=php-src.git;a=commit;h=5ee841325901a4b040cfea56292a24702fe224d9 Log: Fixed bug #62210 (Exceptions can leak temporary variables. As a part of the fix serious refactoring was done. op_array->brk_cont_array was removed, and replaced with more general and speed efficient op_array->T_liveliness. ZEND_GOTO opcode is always replaced by ZEND_JMP at compile time). (Bob, Dmitry, Laruence) ------------------------------------------------------------------------ [2015-07-07 12:42:11] dmitry@php.net Automatic comment on behalf of dmitry@zend.com Revision: http://git.php.net/?p=php-src.git;a=commit;h=5ee841325901a4b040cfea56292a24702fe224d9 Log: Fixed bug #62210 (Exceptions can leak temporary variables. As a part of the fix serious refactoring was done. op_array->brk_cont_array was removed, and replaced with more general and speed efficient op_array->T_liveliness. ZEND_GOTO opcode is always replaced by ZEND_JMP at compile time). (Bob, Dmitry, Laruence) ------------------------------------------------------------------------ [2012-06-25 08:12:35] dmitry@php.net I confirm the bug, but I don't see a simple way to fix it. In general, it's possible to extend zend_op_array with information about ranges of temporary variables livenes, but overhead is going to be too high. ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at https://bugs.php.net/bug.php?id=62210 -- Edit this bug report at https://bugs.php.net/bug.php?id=62210&edit=1