Bug #81362 [NEW]: iconv UTF-8//IGNORE fails to strip "\xF5\x80\x80\x80"

From: divinity76 at gmail dot com Operating system: PHP version: 8.0.9 Package: ICONV related Bug Type: Bug Bug description:iconv UTF-8//IGNORE fails to strip "\xF5\x80\x80\x80" Description: ------------ it does reproduce on "PHP8.0.3 + iconv 2.28 + Ubuntu 20.04", it also reproduce on 3v4l.org everywhere from PHP5.6.0 to PHP8.0.9 inclusive, but unknown iconv/OS: https://3v4l.org/1b4G8 (the string also appears to trigger a bug in mb_check_encoding() that was fixed in 5.6.0?) interestingly it does *not* reproduce on "PHP7.3.7-for-cygwin + iconv 1.0 + Windows 10", there it correctly strip the string down to string(3) "PHP" it's possible that it's the result of a bug introduced sometime after iconv 1.0 and <= iconv 2.28? Test script: --------------- <?php $invalid_utf8="\xF5\x80\x80\x80PHP"; $should_be_valid_utf8=iconv("UTF-8","UTF-8//IGNORE",$invalid_utf8); var_dump($should_be_valid_utf8,bin2hex($should_be_valid_utf8),mb_check_encoding($should_be_valid_utf8)); Expected result: ---------------- string(3) "PHP" string(6) "504850" bool(true) Actual result: -------------- string(7) "����PHP" string(14) "f5808080504850" bool(false) -- Edit bug report at https://bugs.php.net/bug.php?id=81362&edit=1 -- Fix committed: https://bugs.php.net/fix.php?id=81362&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=81362&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=81362&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=81362&r=needscript Try newer version: https://bugs.php.net/fix.php?id=81362&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=81362&r=support Expected behavior: https://bugs.php.net/fix.php?id=81362&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=81362&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=81362&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=81362&r=globals PHP version support discontinued: https://bugs.php.net/fix.php?id=81362&r=phptooold Daylight Savings: https://bugs.php.net/fix.php?id=81362&r=dst IIS Stability: https://bugs.php.net/fix.php?id=81362&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=81362&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=81362&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=81362&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=81362&r=mysqlcfg