Edit report at http://bugs.php.net/bug.php?id=53632&edit=1
ID: 53632 Updated by: ras...@php.net 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: 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. Previous Comments: ------------------------------------------------------------------------ [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. ------------------------------------------------------------------------ [2011-01-04 14:36:28] brandonkirsch at hotmail dot com I have the same problem on PHP 5.3.2 on 32-bit Linux. Configure: './configure' '--with-apxs2=/usr/local/apache2/bin/apxs' '--with- mssql=/usr/local/freetds' '--with-ldap' '--prefix=/usr/local/php5' '--with- config-file-path=/usr/local/php5/etc' '--enable-sockets' '--enable-soap' '-- with-openssl' '--with-unixODBC=/usr' '--with-gd' '--with-jpeg-dir=/usr/lib' '-- with-pdo-odbc=unixODBC,/usr' '--with-pdo-dblib=/usr/local/freetds' uname -a: Linux servername 2.6.16.60-0.42.5-default #1 Mon Aug 24 09:41:41 UTC 2009 i686 i686 i386 GNU/Linux ------------------------------------------------------------------------ [2011-01-04 12:21:52] chx1975 at gmail dot com Excellent analysis at http://news.ycombinator.com/item?id=2066084 ------------------------------------------------------------------------ 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
