Bug #77492 [NEW]: function return empty

From: poiuty at lepus dot su Operating system: debian 9 PHP version: 7.3.1 Package: opcache Bug Type: Bug Bug description:function return empty Description: ------------ [opcache] opcache.enable=1 opcache.enable_cli=1 opcache.interned_strings_buffer=8 opcache.max_accelerated_files=4000 # php -v PHP 7.3.1-1+0~20190113101756.25+stretch~1.gbp15aaa9 (cli) (built: Jan 13 2019 10:17:57) ( NTS ) Copyright (c) 1997-2018 The PHP Group Zend Engine v3.3.1, Copyright (c) 1998-2018 Zend Technologies with Zend OPcache v7.3.1-1+0~20190113101756.25+stretch~1.gbp15aaa9, Copyright (c) 1999-2018, by Zend Technologies Test script: --------------- function testB(){ $x = ['a' => '', 'b' => '']; $num = range(0, 9); foreach($num as $k){ $x['a'] .= $k; } return $x; } function testA(){ $x = ['a' => '', 'b' => '']; $num = range(0, 9); foreach($num as $k){ $x['a'] .= $k; } return $x['a']; } // if opcache.enable=1 => string(0) "" // if opcache.enable=0 => string(10) "0123456789" // if call first testB() => string(10) "0123456789" //var_dump(testB()); var_dump(testA()); full script: https://gist.github.com/poiuty/9759972fcc6bee42bbb250c03ef43e77 -- Edit bug report at https://bugs.php.net/bug.php?id=77492&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=77492&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=77492&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=77492&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=77492&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=77492&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=77492&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=77492&r=needscript Try newer version: https://bugs.php.net/fix.php?id=77492&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=77492&r=support Expected behavior: https://bugs.php.net/fix.php?id=77492&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=77492&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=77492&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=77492&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=77492&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=77492&r=dst IIS Stability: https://bugs.php.net/fix.php?id=77492&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=77492&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=77492&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=77492&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=77492&r=mysqlcfg