1--TEST--
2JIT ASSIGN_OP: 006 concationation with itself
3--INI--
4opcache.enable=1
5opcache.enable_cli=1
6opcache.file_update_protection=0
7--FILE--
8<?php
9function test($a) {
10    for ($i = 0; $i < 2; $i++) {
11        $a .= $a = $a;
12    }
13}
14test("");
15?>
16DONE
17--EXPECT--
18DONE
19