#23039 [NEW]: Apache CRASH with illegal code (C++ style)

From: a dot eibach at gmx dot net Operating system: Win98 SE PHP version: 4.3.1 PHP Bug Type: Reproducible crash Bug description: Apache CRASH with illegal code (C++ style) Hi. What is illegal code? Code with the intention to break something. But sometimes it's even a bad mistake causing this (inheriting a wrong class or deriving from an illegal class or...) The following stuff is really ILLEGAL code. YOU SHOULD NEVER PROGRAM LIKE THIS. ;) But Apache shouldn't GPF, too. The Apache people warped me over here because they said that this is no Apache issue. May they be right. As you can see... The code is *very* narrowed down. It's definitely not _that_ simple IRL. Main class is 'db_entry'. Class 'contact' is derived from employer, which is derived itself from db_entry. Now we get ILLEGAL. We create a new 'contact' member object by directly (!!!) instantiating contact from the db_entry constructor. (Of course, we should instantiate 'employer', because contact is created inside too. But we want the crash, don't we :)) Crazy thing is that PHP doesn't complain about anything if this is done with *existing* 'contact()' constructor. If this is missing or disabled ('//' part), Apache crashes. OS: Win98 SE Apache: 1.3.27 PHP: 4.3.1 (stable) --script-- <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 FINAL//EN"> <HTML> <HEAD> </HEAD> <BODY BGCOLOR="#FFFFFF" LINK="#990000" VLINK="#003366" TEXT="#000000" TOPMARGIN=16 LEFTMARGIN=10 MARGINWIDTH=10 MARGINHEIGHT=16> <font face="Arial"> <?php class employer extends db_entry { var $contactman; function employer() /* constructor */ { $this->contactman = new contact(); } } class contact extends employer { // function contact() // this is the constructor and it's MISSING!!! // { // --> crash // } } class db_entry { var $ct_entry; function db_entry() { /* generate indirect member object by illegally instantiating an object TWO hierarchy steps below!!! */ $this->ct_entry = new contact(); // -> crash! } } $newentr = new db_entry(); echo "OK"; ?> </font> </BODY> </HTML> -- Edit bug report at http://bugs.php.net/?id=23039&edit=1 -- Try a CVS snapshot: http://bugs.php.net/fix.php?id=23039&r=trysnapshot Fixed in CVS: http://bugs.php.net/fix.php?id=23039&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=23039&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=23039&r=needtrace Try newer version: http://bugs.php.net/fix.php?id=23039&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=23039&r=support Expected behavior: http://bugs.php.net/fix.php?id=23039&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=23039&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=23039&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=23039&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=23039&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=23039&r=dst IIS Stability: http://bugs.php.net/fix.php?id=23039&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=23039&r=gnused