Bug #53632 [Asn]: PHP hangs on numeric value 2.2250738585072011e-308

Edit report at http://bugs.php.net/bug.php?id=53632&edit=1 ID: 53632 User updated by: exploringbinary 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: 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. Previous Comments: ------------------------------------------------------------------------ [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 ------------------------------------------------------------------------ [2011-01-04 10:57:51] stuart dot caie at gmail dot com Appears to hang when compiled for 32bit Intel code, but not 64bit code. Hangs in zend_strtod() according to gdb. ------------------------------------------------------------------------ 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