[php-maint] Bug#754432: Bug#754432: php5-fpm: crashes since 5.6.0 / error 4 in opcache.so

[kevin.h at gadeco.de]

Bug still exists in rc3, rc4 and the latest 5.6.0 version (non-rc).

I can reproduce this error when I hit the admin page of Piwigo 2.6.3:
php5-fpm[27582]: segfault at 8c ip 00007fdca4e0d447 sp 00007fff7ac3d450 
error 4 in opcache.so[7fdca4def000+24000]

Do you have any suggestion how to isolate the PHP code which is causing 
the crash?

Thanks!