Edit report at http://bugs.php.net/bug.php?id=53632&edit=1
ID: 53632 Comment by: chris dot tandiono at gmail dot com Reported by: exploringbinary at gmail dot com Summary: PHP hangs on numeric value 2.2250738585072011e-308 Status: Assigned Type: Bug Package: Math related PHP Version: 5.3.4 Assigned To: dmitry Block user comment: N Private report: N New Comment: [christandi...@hang1 ~]$ uname -a FreeBSD hang1 8.0-RELEASE-p3 FreeBSD 8.0-RELEASE-p3 #0: Wed May 26 05:45:12 UTC 2010 r...@i386-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC i386 [christandi...@hang1 ~]$ php -v PHP 5.3.4 with Suhosin-Patch (cli) (built: Dec 20 2010 18:00:57) Copyright (c) 1997-2009 The PHP Group Zend Engine v2.3.0, Copyright (c) 1998-2010 Zend Technologies [ch...@hang2 ~]$ uname -a Linux hang2 2.6.36-ARCH #1 SMP PREEMPT Wed Nov 24 06:44:11 UTC 2010 i686 Intel(R) Core(TM) Duo CPU T2400 @ 1.83GHz GenuineIntel GNU/Linux [ch...@hang2 ~]$ php -v PHP 5.3.4 with Suhosin-Patch (cli) (built: Dec 16 2010 21:19:01) Copyright (c) 1997-2009 The PHP Group Zend Engine v2.3.0, Copyright (c) 1998-2010 Zend Technologies [ch...@nohang ~]$ uname -a Darwin nohang 10.5.0 Darwin Kernel Version 10.5.0: Fri Nov 5 23:20:39 PDT 2010; root:xnu-1504.9.17~1/RELEASE_I386 i386 i386 [ch...@nohang ~]$ php -v PHP 5.3.3 (cli) (built: Aug 22 2010 19:41:57) Copyright (c) 1997-2010 The PHP Group Zend Engine v2.3.0, Copyright (c) 1998-2010 Zend Technologies Hangs on FreeBSD and Linux, not on Mac OS X. It might be worth noting that the last two machines have the same CPU (the Linux and Mac OS X machines). Previous Comments: ------------------------------------------------------------------------ [2011-01-04 17:55:00] hion2000 at yahoo dot ca Same happens on my Ubuntu box as well. $ php -v PHP 5.3.3-1ubuntu9.1 with Suhosin-Patch (cli) (built: Oct 15 2010 14:17:04) Copyright (c) 1997-2009 The PHP Group Zend Engine v2.3.0, Copyright (c) 1998-2010 Zend Technologies $ uname -a Linux Server2 2.6.35-23-generic-pae #41-Ubuntu SMP Wed Nov 24 10:35:46 UTC 2010 i686 GNU/Linux ------------------------------------------------------------------------ [2011-01-04 17:41:03] ras...@php.net This is an interesting bug. How about we just mark these as volatile doubles in that part of the code to make sure they don't end up in registers. My guess is that it would fix it. Need to track down a 32-bit machine to test this though. ------------------------------------------------------------------------ [2011-01-04 17:19:56] exploringbinary at gmail dot com See http://www.exploringbinary.com/php-hangs-on-numeric-value-2-2250738585072011e-308/ http://www.reddit.com/r/programming/comments/evtrq/php_hangs_on_numeric_value_22250738585072011e308/ http://news.ycombinator.com/item?id=2066084 for lots of additional comments on this issue. ------------------------------------------------------------------------ [2011-01-04 16:50:11] abowling1 at gmail dot com Same problem on 2 systems (hangs with CPU pegged at 100%). I have two CentOS 5.5 systems running i386 PHP packages: PHP 5.3.2 (cli) (built: Mar 4 2010 21:52:46), Zend Engine v2.3.0, with eAccelerator v0.9.6 CPU: processor : 0 (and 1) vendor_id : GenuineIntel cpu family : 6 model : 15 model name : Intel(R) Core(TM)2 CPU 6420 @ 2.13GHz stepping : 6 cpu MHz : 800.000 cache size : 4096 KB physical id : 0 siblings : 2 core id : 0 cpu cores : 2 fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 10 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm constant_tsc pni mon itor ds_cpl vmx est tm2 cx16 xtpr lahf_lm bogomips : 2139.82 AND PHP 5.3.3 (cli) (built: Jul 22 2010 16:41:20), Zend Engine v2.3.0, with eAccelerator v0.9.6 CPU: processor : 0 vendor_id : GenuineIntel cpu family : 15 model : 2 model name : Intel(R) Pentium(R) 4 CPU 2.00GHz stepping : 4 cpu MHz : 1993.668 cache size : 512 KB fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 2 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm up bogomips : 3987.33 Package's build settings: ./configure --build=i686-redhat-linux-gnu --host=i686-redhat-linux-gnu --target=i386-redhat-linux-gnu --program-prefix= --prefix=/usr --exec-prefix=/usr --bindir=/usr/bin --sbindir=/usr/sbin --sysconfdir=/etc --datadir=/usr/share --includedir=/usr/include --libdir=/usr/lib --libexecdir=/usr/libexec --localstatedir=/var --sharedstatedir=/usr/com --mandir=/usr/share/man --infodir=/usr/share/info --cache-file=../config.cache --with-libdir=lib --with-config-file-path=/etc --with-config-file-scan-dir=/etc/php.d --disable-debug --with-pic --disable-rpath --without-pear --with-bz2 --with-exec-dir=/usr/bin --with-freetype-dir=/usr --with-png-dir=/usr --with-xpm-dir=/usr --enable-gd-native-ttf --with-t1lib=/usr --without-gdbm --with-gettext --with-gmp --with-iconv --with-jpeg-dir=/usr --with-openssl --with-zlib --with-layout=GNU --enable-exif --enable-ftp --enable-magic-quotes --enable-sockets --enable-sysvsem --enable-sysvshm --enable-sysvmsg --with-kerberos --enable-ucd-snmp-hack --enable-shmop --enable-calendar --with-libxml-dir=/usr --enable-xml --with-system-tzdata --with-apxs2=/usr/sbin/apxs --enable-maintainer-zts --with-config-file-scan-dir=/etc/php-zts.d --enable-force-cgi-redirect --enable-pcntl --with-imap=shared --with-imap-ssl --enable-mbstring=shared --enable-mbregex --with-gd=shared --enable-bcmath=shared --enable-dba=shared --with-db4=/usr --with-xmlrpc=shared --with-ldap=shared --with-ldap-sasl --with-mysql=shared,mysqlnd --with-mysqli=shared,mysqlnd --enable-mysqlnd-threading --with-oci8=shared,instantclient,/usr/lib/oracle/11.1.0.7/client/lib,11.1.0.7 --with-pdo-oci=shared,instantclient,/usr,11.1.0.7 --with-interbase=shared,/usr/lib/firebird --with-pdo-firebird=shared,/usr/lib/firebird --enable-dom=shared --with-pgsql=shared --enable-wddx=shared --with-snmp=shared,/usr --enable-soap=shared --with-xsl=shared,/usr --enable-xmlreader=shared --enable-xmlwriter=shared --with-curl=shared,/usr --enable-fastcgi --enable-pdo=shared --with-pdo-odbc=shared,unixODBC,/usr --with-pdo-mysql=shared,mysqlnd --with-pdo-pgsql=shared,/usr --with-pdo-sqlite=shared,/usr --with-pdo-dblib=shared,/usr --without-sqlite3 --with-sqlite=shared,/usr --enable-json=shared --enable-zip=shared --without-readline --with-libedit --with-pspell=shared --enable-phar=shared --with-mcrypt=shared,/usr --with-tidy=shared,/usr --with-mssql=shared,/usr --enable-sysvmsg=shared --enable-sysvshm=shared --enable-sysvsem=shared --enable-posix=shared --with-unixODBC=shared,/usr --enable-fileinfo=shared --enable-intl=shared --with-icu-dir=/usr --with-enchant=shared,/usr --with-recode=shared,/usr ------------------------------------------------------------------------ [2011-01-04 16:08:46] brandonkirsch at hotmail dot com Update: PHP 5.2.6 is NOT affected by this bug on the same 32-bit architecture as my previous post. ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at http://bugs.php.net/bug.php?id=53632 -- Edit this bug report at http://bugs.php.net/bug.php?id=53632&edit=1
