[PHP-BUG] Bug #78296 [NEW]: is_file fails to detect file

From:             v-altruo at microsoft dot com
Operating system: Windows
PHP version:      7.4.0alpha3
Package:          Testing related
Bug Type:         Bug
Bug description:is_file fails to detect file

Description:
------------
Test fails across all builds regardless of opcache on/off. Looked a bit
into it, the "is_file($file)" is the part that fails. 

Failed Test Location: ext\standard\tests\file\bug75679.phpt 

Test script:
---------------
<?php
$d = __DIR__;
$Files2Report =
 [
  str_pad ($d . '/' . str_repeat (str_pad
('bug75679_path_259_characters_long_', 100, '_') . '/', 1), 259, '_') =>
[],
  str_pad ($d . '/' . str_repeat (str_pad
('bug75679_path_260_characters_long_', 100, '_') . '/', 1), 260, '_') =>
[],
  str_pad ($d . '/' . str_repeat (str_pad
('bug75679_path_261_characters_long_', 100, '_') . '/', 1), 261, '_') =>
[],
 ];
foreach ($Files2Report as $file => &$Report)
 {
  $Report = ['strlen' => strlen ($file), 'result' => 'nok'];

  if (! is_dir (dirname ($file))) mkdir (dirname ($file), 0777, true);
  if (copy (__FILE__, $file) && is_file ($file))
   {
    $Report['result'] = 'ok';
   }

  print_r ($Report);
 }


?>

Expected result:
----------------
Array
(
    [strlen] => 259
    [result] => ok
)
Array
(
    [strlen] => 260
    [result] => ok
)
Array
(
    [strlen] => 261
    [result] => ok
)
==DONE==

Actual result:
--------------
Array
(
    [strlen] => 259
    [result] => ok
)
Array
(
    [strlen] => 260
    [result] => nok
)
Array
(
    [strlen] => 261
    [result] => nok
)
==DONE==

-- 
Edit bug report at https://bugs.php.net/bug.php?id=78296&edit=1
-- 
Try a snapshot (PHP 5.4):   https://bugs.php.net/fix.php?id=78296&r=trysnapshot54
Try a snapshot (PHP 5.5):   https://bugs.php.net/fix.php?id=78296&r=trysnapshot55
Try a snapshot (trunk):     https://bugs.php.net/fix.php?id=78296&r=trysnapshottrunk
Fixed in SVN:               https://bugs.php.net/fix.php?id=78296&r=fixed
Fixed in release:           https://bugs.php.net/fix.php?id=78296&r=alreadyfixed
Need backtrace:             https://bugs.php.net/fix.php?id=78296&r=needtrace
Need Reproduce Script:      https://bugs.php.net/fix.php?id=78296&r=needscript
Try newer version:          https://bugs.php.net/fix.php?id=78296&r=oldversion
Not developer issue:        https://bugs.php.net/fix.php?id=78296&r=support
Expected behavior:          https://bugs.php.net/fix.php?id=78296&r=notwrong
Not enough info:            https://bugs.php.net/fix.php?id=78296&r=notenoughinfo
Submitted twice:            https://bugs.php.net/fix.php?id=78296&r=submittedtwice
register_globals:           https://bugs.php.net/fix.php?id=78296&r=globals
PHP 4 support discontinued: https://bugs.php.net/fix.php?id=78296&r=php4
Daylight Savings:           https://bugs.php.net/fix.php?id=78296&r=dst
IIS Stability:              https://bugs.php.net/fix.php?id=78296&r=isapi
Install GNU Sed:            https://bugs.php.net/fix.php?id=78296&r=gnused
Floating point limitations: https://bugs.php.net/fix.php?id=78296&r=float
No Zend Extensions:         https://bugs.php.net/fix.php?id=78296&r=nozend
MySQL Configuration Error:  https://bugs.php.net/fix.php?id=78296&r=mysqlcfg