Bug #80900 [Opn->Ver]: switch statement behavior inside function
Edit report at https://bugs.php.net/bug.php?id=80900&edit=1
ID: 80900
Updated by: cmb@php.net
Reported by: srohde at newshour dot org
Summary: switch statement behavior inside function
-Status: Open
+Status: Verified
Type: Bug
Package: opcache
Operating System: OSX
PHP Version: 7.4.16
Block user comment: N
Private report: N
New Comment:
I can confirm this. With optimization_level=0xA0, testWithVal()
fails as well.
Previous Comments:
------------------------------------------------------------------------
[2021-03-23 19:09:40] srohde at newshour dot org
Description:
------------
When Opcache is enabled, the evaluation of a boolean variable is inconsistent within a switch
statement with a default case that is inside of a function scope. If a variable that is assigned a
boolean value is passed, the results do not evaluate as expected, however, if a boolean value is
directly passed, the evaluation runs as expected. Outside of a function scope, the evaluation runs
as expected, regardless of variable assignment.
Zend Engine v3.4.0
Zend OPcache v7.4.16
opcache.optimization_level 0x7FFEBFFF
opcache.memory_consumption=128
opcache.interned_strings_buffer=8
opcache.max_accelerated_files=4000
opcache.revalidate_freq=2
opcache.fast_shutdown=1
opcache.enable_cli=1
Test script:
---------------
<?php
function testWithVar() {
$booleanVar = false;
switch ($booleanVar) {
case 'a_test_case':
echo 'inside testWithVar - "a_test_case"';
break;
default:
echo 'inside testWithVar - "default"';
break;
}
}
function testWithVal() {
switch (false) {
case 'a_test_case':
echo 'inside testWithVal - "a_test_case"';
break;
default:
echo 'inside testWithVal - "default"';
break;
}
}
$booleanVar = false;
switch ($booleanVar) {
case 'a_test_case':
echo 'outside function - "a_test_case"';
break;
default:
echo 'outside function - "default"';
break;
}
echo PHP_EOL;
testWithVar();
echo PHP_EOL;
testWithVal();
Expected result:
----------------
outside function - "default"
inside testWithVar - "default"
inside testWithVal - "default"
Actual result:
--------------
outside function - "default"
inside testWithVar - "a_test_case"
inside testWithVal - "default"
------------------------------------------------------------------------
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Edit this bug report at https://bugs.php.net/bug.php?id=80900&edit=1
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