Bug #75236 [NEW]: infinite loop when printing an error-message

From: lzsiga at freemail dot c3 dot hu Operating system: AIX, Linux PHP version: 7.1.9 Package: Reproducible crash Bug Type: Bug Bug description:infinite loop when printing an error-message Description: ------------ Printing an error message with settings 'html_errors=true' and 'default_charset=ISO-8859-2' leads to infinite loop. Components of the loop: determine_charset -> php_error_docref0 -> php_verror -> php_escape_html_entities -> php_escape_html_entities_ex -> determine_charset This bug was introduced in version 7.1.9, main/main.c line 765 before: replace_buffer = php_escape_html_entities((unsigned char*)buffer, buffer_len, 0, ENT_COMPAT, NULL); after: php_escape_html_entities((unsigned char*)buffer, buffer_len, 0, ENT_COMPAT, SG(default_charset)); (A note: The problem could be solved if htmlentities didn't verify UTF8-validity and silently ignored 'charset' parameter. See also: https://bugs.php.net/bug.php?id=47494 ) Test script: --------------- #!/usr/local/bin/php <?php ini_set('html_errors', true); ini_set('default_charset', 'ISO-8859-2'); printf ("before getfilecontent\n"); file_get_contents ('no/suchfile'); printf ("after getfilecontent\n"); ?> Expected result: ---------------- before getfilecontent PHP Warning: file_get_contents(no/suchfile): failed to open stream: No such file or directory in /local/home/projects/devel/phptest/loopy.php on line 8 <br /> <b>Warning</b>: file_get_contents(no/suchfile): failed to open stream: No such file or directory in <b>/local/home/projects/devel/phptest/loopy.php</b> on line <b>8</b><br /> after getfilecontent Actual result: -------------- before getfilecontent Segmentation fault -- Edit bug report at https://bugs.php.net/bug.php?id=75236&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=75236&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=75236&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=75236&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=75236&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=75236&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=75236&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=75236&r=needscript Try newer version: https://bugs.php.net/fix.php?id=75236&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=75236&r=support Expected behavior: https://bugs.php.net/fix.php?id=75236&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=75236&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=75236&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=75236&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=75236&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=75236&r=dst IIS Stability: https://bugs.php.net/fix.php?id=75236&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=75236&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=75236&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=75236&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=75236&r=mysqlcfg