Description:
------------
code below stripped from paragonie/random_compat/lib/random.php

this my first compilation on 16.04 gcc toolchain, and i dont know my toolchain has a problem, or this is a bug, becaouse the original downloaded binary version works without problem on this file, but my compilation fails

$_main: ; (lines=1, args=0, vars=0, tmps=0)
    ; (after optimizer)
    ; /home/sla/workspace/its3/test6.php:1-22
L0 (4):     RETURN null

random_bytes: ; (lines=6, args=1, vars=1, tmps=1)
    ; (after optimizer)
    ; /home/sla/workspace/its3/test6.php:12-19
L0 (12):    CV0($length) = RECV 1
L1 (14):    UNSET_CV CV0($length)
L2 (15):    V1 = NEW 1 string("Exception")
L3 (16):    SEND_VAL_EX string("There is no suitable CSPRNG installed on your system") 1
L4 (16):    DO_FCALL
L5 (16):    THROW V1
php: /home/mate/php-7.2.5/ext/opcache/zend_file_cache.c:506: zend_file_cache_serialize_op_array: Assertion `(((char*)(op_array->try_catch_array) >= (char*)script->mem && (char*)(op_array->try_catch_array) < (char*)script->mem + script->size) || ((char*)(op_array->try_catch_array) >= (accel_shared_globals->interned_strings_start) && (char*)(op_array->try_catch_array) < (accel_shared_globals->interned_strings_end)))' failed.
Aborted (core dumped)



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

if (PHP_VERSION_ID >= 70000) {
    return;
}

if (!is_callable('random_bytes')) {
            try {
            } catch (com_exception $e) {
            }

        function random_bytes($length)
        {
            unset($length); // Suppress "variable not used" warnings.
            throw new Exception(
                'There is no suitable CSPRNG installed on your system'
            );
            return '';
        }
}