Bug #76854 [NEW]: streamWrapper behaves differently

From: miloslav dot hula at gmail dot com Operating system: PHP version: 7.3.0beta3 Package: Streams related Bug Type: Bug Bug description:streamWrapper behaves differently Description: ------------ Nette Tester (https://github.com/nette/tester) uses streamWrapper to mock files. On PHP 7.2.8 all tests pass, on 7.3.0beta3 one behaves differently. Probably when truncating file contents. Following code is extraction from Tester. Test script: --------------- https://gist.github.com/milo/c13fe314c486451d2c545b923e73622f -- Edit bug report at https://bugs.php.net/bug.php?id=76854&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=76854&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=76854&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=76854&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=76854&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=76854&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=76854&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=76854&r=needscript Try newer version: https://bugs.php.net/fix.php?id=76854&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=76854&r=support Expected behavior: https://bugs.php.net/fix.php?id=76854&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=76854&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=76854&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=76854&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=76854&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=76854&r=dst IIS Stability: https://bugs.php.net/fix.php?id=76854&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=76854&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=76854&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=76854&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=76854&r=mysqlcfg