Bug #76422 [NEW]: ftruncate fails on files > 2GB

From: yani at iliev dot me Operating system: Windows 10 Pro x64 PHP version: 7.2.6 Package: Filesystem function related Bug Type: Bug Bug description:ftruncate fails on files > 2GB Description: ------------ ftruncate returns false when the file being truncated is > 2GB and the offset is also > 2GB. This only occurs on Windows and not on Linux/Mac Test script: --------------- <?php $file_handle = fopen('test','cb'); if (false === $file_handle) { die('Cannot open test file :/'); } $truncate_offset = 2 * 1024 * 1024 * 1024 + 1; // 2GB + 1 $ftruncate_result = ftruncate($file_handle, $truncate_offset); if (false === $ftruncate_result) { die('Truncate has failed :/'); } fclose($file_handle); -- Edit bug report at https://bugs.php.net/bug.php?id=76422&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=76422&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=76422&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=76422&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=76422&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=76422&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=76422&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=76422&r=needscript Try newer version: https://bugs.php.net/fix.php?id=76422&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=76422&r=support Expected behavior: https://bugs.php.net/fix.php?id=76422&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=76422&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=76422&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=76422&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=76422&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=76422&r=dst IIS Stability: https://bugs.php.net/fix.php?id=76422&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=76422&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=76422&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=76422&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=76422&r=mysqlcfg