Description:
------------
custom build of php 7.2.12

./configure --prefix=/usr/local/php --enable-cli --enable-fpm --with-fpm-systemd --with-pgsql=/usr/pgsql-9.6 --with-pdo-pgsql=/usr/pgsql-9.6 --enable-mbstring --with-zlib --with-openssl=/usr/local/openssl --with-gd --with-ldap --with-curl --with-gettext --with-gmp --with-kerberos --enable-pcntl --enable-sysvsem --enable-sysvshm --enable-zip --enable-intl --enable-ftp --with-bz2 --enable-opcache --with-mysqli=shared --with-pdo-mysql=shared --with-jpeg-dir=/usr/lib --with-png-dir=/usr/lib --with-zlib-dir=/usr/lib --enable-debug

php.ini :
zend_extension=opcache.so

running the following script with php-fpm lead to a SIGABORT :

[pool default] child 8749 said into stderr: "t: /home/build/build/php-7.2.12/ext/opcache/Optimizer/zend_cfg.c:156: zend_mark_reachable_blocks: Assertion `b->start == live_range->end' failed."


Test script:
---------------
<?php

function _crash($eValeur) {
        switch ($eValeur["a"]) {
                default:
                        switch($eValeur["a"]) {
                                default:
                                        return 2;
                        }
        }
}