#28844 [NEW]: Intermittent (but frequent) crash using command line php

From: tlawton at gmx dot de Operating system: Windows XP SP2RC1 (2096) PHP version: 4.3.7 PHP Bug Type: Reproducible crash Bug description: Intermittent (but frequent) crash using command line php Description: ------------ Using the Win32 binaries from php.net, command line version. I'm doing some artificial intelligence work (I'm aware this isn't PHP's strongest point) with scripts that run for potentially hundreds of seconds, but don't use much memory. Intermittently I recieve this crash. It does not depend on the input data (ie immediately repeating the command with the same set of data may run to completion). AppName: php.exe AppVer: 4.3.7.7 ModName: php4ts.dll ModVer: 4.3.7.7 Offset: 000b600d Unhandled exception at 0x100b600d in php.exe: 0xC0000005: Access violation reading location 0x0000017f. 100B5FFA mov eax,dword ptr [esp+14h] 100B5FFE mov ecx,dword ptr [eax+4] 100B6001 mov eax,dword ptr [eax+1Ch] 100B6004 and ecx,edx 100B6006 mov eax,dword ptr [eax+ecx*4] 100B6009 test eax,eax 100B600B je 100B606E 100B600D cmp dword ptr [eax],edx 100B600F jne 100B6027 100B6011 cmp dword ptr [eax+4],edi 100B6014 jne 100B6027 100B6016 mov ecx,edi 100B6018 mov edi,ebx 100B601A lea esi,[eax+20h] 100B601D xor ebp,ebp 100B601F repe cmps byte ptr [esi],byte ptr [edi] 100B6021 je 100B605E Reproduce code: --------------- Has occurred during all stages of the code. Code is essentially looped calculations on large arrays. I'll find somewhere to put the source later. Expected result: ---------------- Successful completion. Actual result: -------------- Crash as above. -- Edit bug report at http://bugs.php.net/?id=28844&edit=1 -- Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=28844&r=trysnapshot4 Try a CVS snapshot (php5): http://bugs.php.net/fix.php?id=28844&r=trysnapshot5 Fixed in CVS: http://bugs.php.net/fix.php?id=28844&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=28844&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=28844&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=28844&r=needscript Try newer version: http://bugs.php.net/fix.php?id=28844&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=28844&r=support Expected behavior: http://bugs.php.net/fix.php?id=28844&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=28844&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=28844&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=28844&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=28844&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=28844&r=dst IIS Stability: http://bugs.php.net/fix.php?id=28844&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=28844&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=28844&r=float