Found the issue.
I've applied a local patchset which included this revision:
http://svn.php.net/viewvc/?view=revision&revision=291488
Which fixes:
#50261 (Crash When Calling Parent Constructor with call_user_func())
However, it also included a small mistake commit, later reverted in revision
29
Hello all,
I have IMagick 2.2.2 [latest stable in PECL] loaded with PHP 5.3.1. When
sending SIGHUP, Apache defuncts, the BT is as follows:
(gdb) bt
#0 0x7f069935b384 in __lll_lock_wait () from /lib/libpthread.so.0
#1 0x7f0699356bf0 in _L_lock_102 () from /lib/libpthread.so.0
#2 0x000