Bug #78396 [NEW]: Second file_put_contents in Shutdown hangs script

From: herbert at groot dot jebbink dot nl Operating system: Debian Stretch (inside ChromeOS) PHP version: 7.4.0beta2 Package: *General Issues Bug Type: Bug Bug description:Second file_put_contents in Shutdown hangs script Description: ------------ The second file_put_contents to the same file inside the Shutdown function does never happen, the script hangs. When removing the 'LOCK_EX' option it works. The setup is a own build inside Debian Stretch inside ChromeOS (with crouton), Apache is used from the Stretch distribution. ./configure --with-apxs2=/usr/bin/apxs2 --with-mysql-sock=/run/mysqld/mysqld.sock --enable-mbstring --enable-exif --enable-ftp --with-zip --enable-soap --with-mysqli --with-pdo-mysql --with-curl --with-openssl --with-zlib --with-bz2 --enable-gd --with-webp --with-jpeg --with-xpm --with-freetype --with-tidy --with-xsl --with-sodium --enable-shmop --with-mm --with-pspell --with-pear The content of php.ini is zend_extension=opcache.so max_execution_time=2 memory_limit=2048M display_errors=on error_reporting=E_ALL Test script: --------------- <?php register_shutdown_function ('shutdown'); file_put_contents ('/home/me/data/test.txt', "main 1 \n", FILE_APPEND | LOCK_EX); file_put_contents ('/home/me/data/test.txt', "main 2 \n", FILE_APPEND | LOCK_EX); a: goto a; function shutdown () { $error = error_get_last(); if ( ! is_null($error) ) { file_put_contents ('/home/me/data/test.txt', "shutdown 1 \n", FILE_APPEND | LOCK_EX); file_put_contents ('/home/me/data/test.txt', "shutdown 2 \n", FILE_APPEND | LOCK_EX); } exit; } ?> Expected result: ---------------- main 1 main 2 shutdown 1 shutdown 2 Actual result: -------------- main 1 main 2 shutdown 1 -- Edit bug report at https://bugs.php.net/bug.php?id=78396&edit=1 -- Fix committed: https://bugs.php.net/fix.php?id=78396&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=78396&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=78396&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=78396&r=needscript Try newer version: https://bugs.php.net/fix.php?id=78396&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=78396&r=support Expected behavior: https://bugs.php.net/fix.php?id=78396&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=78396&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=78396&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=78396&r=globals PHP version support discontinued: https://bugs.php.net/fix.php?id=78396&r=phptooold Daylight Savings: https://bugs.php.net/fix.php?id=78396&r=dst IIS Stability: https://bugs.php.net/fix.php?id=78396&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=78396&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=78396&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=78396&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=78396&r=mysqlcfg