Bug #69020 [NEW]: Possible memory corruption on file error messages

From: php at maisqi dot com Operating system: Windows 8.1 PHP version: 5.6.5 Package: Filesystem function related Bug Type: Bug Bug description:Possible memory corruption on file error messages Description: ------------ If I try to handle a file whose name is ISO-8859-1 (on a NTFS file system), and force some error, the error message is printed with some unexpected chars, besides those that are to be expected when we cross different character encodings. I tested this on PHP5.5 and it worked ok. PHP 5.6, 32 bits or 64 bits, print the strange chars and crashed a few times. I can't test this on Linux for now. Test script: --------------- file_get_contents (utf8_decode ('Z:/Voláção')); echo '<br />'; trigger_error(utf8_decode ('Z:/Voláção'), E_USER_WARNING); trigger_error(utf8_decode ('Z:/Voláção'), E_USER_WARNING); /** * Note: I repeated the trigger_error() solely to prove that the output * is not random. */ Expected result: ---------------- The script should emit three very similar error messages. Actual result: -------------- This is what I get on my system: Warning: <`d��� : failed to open stream: No such file or directory [...] Warning: Z:/Vol���o in D:\Apache\exp\web\exp.php on line 22 Warning: Z:/Vol���o in D:\Apache\exp\web\exp.php on line 23 The «garbage» chars are quite different in the first message. I suspect this is due to some memory corruption bug. In fact, this simple script crashes once in a while (at least on my system). -- Edit bug report at https://bugs.php.net/bug.php?id=69020&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=69020&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=69020&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=69020&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=69020&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=69020&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=69020&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=69020&r=needscript Try newer version: https://bugs.php.net/fix.php?id=69020&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=69020&r=support Expected behavior: https://bugs.php.net/fix.php?id=69020&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=69020&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=69020&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=69020&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=69020&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=69020&r=dst IIS Stability: https://bugs.php.net/fix.php?id=69020&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=69020&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=69020&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=69020&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=69020&r=mysqlcfg