Bug #70547 [NEW]: unsetting function variables corrupts backtrace
From: classicScott at gmail dot com
Operating system: Ubuntu 14.04
PHP version: 7.0.0RC3
Package: Performance problem
Bug Type: Bug
Bug description:unsetting function variables corrupts backtrace
Description:
------------
If an arugment is unset inside of a function, it is also unset from
the call stack and corrupts the argument array in the backtrace. This
leads to a corrupt array that has a count > 0 and no elements within it.
This happens with both debug_backtrace() and getTraceAsString() in the
\Exception class.
Test script:
---------------
https://gist.github.com/terpfear/4adab63546659d1f3cab
Expected result:
----------------
Results obtained from php 5.5.9
array(2) {
[0] =>
string(6) "string"
[1] =>
string(13) "anything else"
}
1) /home/scottf/sandbox/funsies/phpFun/php7BreakingArray.php(18):
brokenTrace('string', 'anything else')
unsetting arg1
array(2) {
[0] =>
string(6) "string"
[1] =>
string(13) "anything else"
}
1) /home/scottf/sandbox/funsies/phpFun/php7BreakingArray.php(18):
brokenTrace('string', 'anything else')
unsetting arg2
array(2) {
[0] =>
string(6) "string"
[1] =>
string(13) "anything else"
}
1) /home/scottf/sandbox/funsies/phpFun/php7BreakingArray.php(18):
brokenTrace('string', 'anything else')
Actual result:
--------------
array(2) {
[0]=>
string(6) "string"
[1]=>
string(13) "anything else"
}
1) /home/scottf/sandbox/funsies/phpFun/php7BreakingArray.php(18):
brokenTrace('string', 'anything else')
unsetting arg1
array(2) {
[1]=>
string(13) "anything else"
}
1) /home/scottf/sandbox/funsies/phpFun/php7BreakingArray.php(18):
brokenTrace('anything else')
unsetting arg2
array(2) {
}
1) /home/scottf/sandbox/funsies/phpFun/php7BreakingArray.php(18):
brokenTrace()
--
Edit bug report at https://bugs.php.net/bug.php?id=70547&edit=1
--
Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=70547&r=trysnapshot54
Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=70547&r=trysnapshot55
Try a snapshot (trunk): https://bugs.php.net/fix.php?id=70547&r=trysnapshottrunk
Fixed in SVN: https://bugs.php.net/fix.php?id=70547&r=fixed
Fixed in release: https://bugs.php.net/fix.php?id=70547&r=alreadyfixed
Need backtrace: https://bugs.php.net/fix.php?id=70547&r=needtrace
Need Reproduce Script: https://bugs.php.net/fix.php?id=70547&r=needscript
Try newer version: https://bugs.php.net/fix.php?id=70547&r=oldversion
Not developer issue: https://bugs.php.net/fix.php?id=70547&r=support
Expected behavior: https://bugs.php.net/fix.php?id=70547&r=notwrong
Not enough info: https://bugs.php.net/fix.php?id=70547&r=notenoughinfo
Submitted twice: https://bugs.php.net/fix.php?id=70547&r=submittedtwice
register_globals: https://bugs.php.net/fix.php?id=70547&r=globals
PHP 4 support discontinued: https://bugs.php.net/fix.php?id=70547&r=php4
Daylight Savings: https://bugs.php.net/fix.php?id=70547&r=dst
IIS Stability: https://bugs.php.net/fix.php?id=70547&r=isapi
Install GNU Sed: https://bugs.php.net/fix.php?id=70547&r=gnused
Floating point limitations: https://bugs.php.net/fix.php?id=70547&r=float
No Zend Extensions: https://bugs.php.net/fix.php?id=70547&r=nozend
MySQL Configuration Error: https://bugs.php.net/fix.php?id=70547&r=mysqlcfg
Thread (5 messages)
- classicScott at gmail dot com