Bug #54039 [Asn->Csd]: use() of static variables in lambda functions can break staticness

Edit report at http://bugs.php.net/bug.php?id=54039&edit=1 ID: 54039 Updated by: dmitry@php.net Reported by: a at b dot c dot de Summary: use() of static variables in lambda functions can break staticness -Status: Assigned +Status: Closed Type: Bug Package: Scripting Engine problem Operating System: Windows XP PHP Version: 5.3.5 Assigned To: dmitry Block user comment: N Private report: N New Comment: This bug has been fixed in SVN. Snapshots of the sources are packaged every three hours; this change will be in the next snapshot. You can grab the snapshot at http://snaps.php.net/. Thank you for the report, and for helping us make PHP better. Previous Comments: ------------------------------------------------------------------------ [2011-04-08 12:02:10] dmitry@php.net Automatic comment from SVN on behalf of dmitry Revision: http://svn.php.net/viewvc/?view=revision&revision=310050 Log: - Fixed bug #54358 (Closure, use and reference) - Fixed bug #54039 (use() of static variables in lambda functions can break staticness) ------------------------------------------------------------------------ [2011-02-21 08:34:59] cataphract@php.net The concatenation example indeed shows memory corruption, with invalid free's and reads of freed data, ------------------------------------------------------------------------ [2011-02-19 03:29:30] a at b dot c dot de The cited snapshot (the VC6 build, FYI) shows the correct behaviour for the incrementing tests. $v remains static in the string concatenation test as well, but there is what is probably an additional issue at play there: Outer function catenates 'b' onto $v to give b Outer function catenates 'a' onto $v to give ba Inner function reckons $v is b Outer function catenates 'b' onto $v to give bab Outer function catenates 'a' onto $v to give baba Inner function reckons $v is X☼← Outer function catenates 'b' onto $v to give X☼←☺b Outer function catenates 'a' onto $v to give X☼←☺ba Inner function reckons $v is ↕←☺b Outer function catenates 'b' onto $v to give ↕←☺bab Outer function catenates 'a' onto $v to give ↕←☺baba Inner function reckons $v is ↕←☺bab ------------------------------------------------------------------------ [2011-02-18 13:59:28] cataphract@php.net For windows, the address will be http://rmtools.php.net/snaps/5.3-ts-windows-vc9-x86/builds/php-5.3-ts-windows-vc9-x86-r308443.zip (or similar for other compiler/thread safety combination) ------------------------------------------------------------------------ [2011-02-18 13:54:23] cataphract@php.net Please try using this snapshot: http://snaps.php.net/php5.3-latest.tar.gz For Windows: http://windows.php.net/snapshots/ Bug #53958 is similar and is fixed in SVN. ------------------------------------------------------------------------ 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 http://bugs.php.net/bug.php?id=54039 -- Edit this bug report at http://bugs.php.net/bug.php?id=54039&edit=1