From: marcel at webdisplay dot nl
Operating system: Mac OS X + CentOS
PHP version: 5.4.13
Package: PDF related
Bug Type: Bug
Bug description:Using PDFlib causes a segfault
Description:
------------
Using PDFlib causes a segfault in certain situations.
Platforms tested:
CentOS 6.4 with PHP 5.4.11
Mac OS X 10.8.3 with PHP 5.4.13
PDFLib 8.0.5 and PDFlib 9.0.0
Test script:
---------------
class Pdf extends PDFLib {
/** Just some public variable */
public $someVar;
}
$pdf = new Pdf();
//print_r($pdf);
Expected result:
----------------
The script should return normally
Actual result:
--------------
A segmentation fault occurs
Backtrace:
Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: KERN_INVALID_ADDRESS at address: 0x0000000000000020
0x00000001001ebb2d in zend_hash_destroy ()
(gdb) bt
#0 0x00000001001ebb2d in zend_hash_destroy ()
#1 0x0000000101ad3677 in pdflib_object_dtor ()
#2 0x0000000100203b71 in zend_objects_store_del_ref_by_handle_ex ()
#3 0x0000000100203c2a in zend_objects_store_del_ref ()
#4 0x00000001001d2ac1 in _zval_ptr_dtor ()
#5 0x00000001001eb854 in zend_hash_apply_deleter ()
#6 0x00000001001eb910 in zend_hash_reverse_apply ()
#7 0x00000001001d5ac7 in shutdown_destructors ()
#8 0x00000001001df958 in zend_call_destructors ()
#9 0x0000000100182247 in php_request_shutdown ()
#10 0x000000010026bdd8 in main ()
(gdb)
Please note that the segfault does not occur if either:
a) the public variable is removed from the class
b) print_r($pdf) is uncommented
--
Edit bug report at https://bugs.php.net/bug.php?id=64455&edit=1
--
Try a snapshot (PHP 5.4):
https://bugs.php.net/fix.php?id=64455&r=trysnapshot54
Try a snapshot (PHP 5.3):
https://bugs.php.net/fix.php?id=64455&r=trysnapshot53
Try a snapshot (trunk):
https://bugs.php.net/fix.php?id=64455&r=trysnapshottrunk
Fixed in SVN: https://bugs.php.net/fix.php?id=64455&r=fixed
Fixed in release: https://bugs.php.net/fix.php?id=64455&r=alreadyfixed
Need backtrace: https://bugs.php.net/fix.php?id=64455&r=needtrace
Need Reproduce Script: https://bugs.php.net/fix.php?id=64455&r=needscript
Try newer version: https://bugs.php.net/fix.php?id=64455&r=oldversion
Not developer issue: https://bugs.php.net/fix.php?id=64455&r=support
Expected behavior: https://bugs.php.net/fix.php?id=64455&r=notwrong
Not enough info:
https://bugs.php.net/fix.php?id=64455&r=notenoughinfo
Submitted twice:
https://bugs.php.net/fix.php?id=64455&r=submittedtwice
register_globals: https://bugs.php.net/fix.php?id=64455&r=globals
PHP 4 support discontinued: https://bugs.php.net/fix.php?id=64455&r=php4
Daylight Savings: https://bugs.php.net/fix.php?id=64455&r=dst
IIS Stability: https://bugs.php.net/fix.php?id=64455&r=isapi
Install GNU Sed: https://bugs.php.net/fix.php?id=64455&r=gnused
Floating point limitations: https://bugs.php.net/fix.php?id=64455&r=float
No Zend Extensions: https://bugs.php.net/fix.php?id=64455&r=nozend
MySQL Configuration Error: https://bugs.php.net/fix.php?id=64455&r=mysqlcfg
