--TEST--
SCCP 016: Used constant instructions should be replaced with QM_ASSIGN
--INI--
opcache.enable=1
opcache.enable_cli=1
opcache.optimization_level=-1
opcache.opt_debug_level=0x20000
opcache.preload=
zend_test.observer.enabled=0
--EXTENSIONS--
opcache
--FILE--
<?php
return isset($undef) || php_sapi_name() == php_sapi_name();
?>
--EXPECTF--
$_main:
     ; (lines=4, args=0, vars=1, tmps=1)
     ; (after optimizer)
     ; %ssccp_016.php:1-4
0000 T1 = ISSET_ISEMPTY_CV (isset) CV0($undef)
0001 T1 = JMPNZ_EX T1 0003
0002 T1 = QM_ASSIGN bool(true)
0003 RETURN T1