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Bug #7617 Floating point exception when starting PHP cgi binary
Submitted: 2000-11-03 06:10 UTC Modified: 2001-01-09 17:45 UTC
From: bjoern at baer dot main dot de Assigned:
Status: Closed Package: Reproducible Crash
PHP Version: 4.0 Latest CVS (29/11/2000) OS: FreeBSD 3.3
Private report: No CVE-ID: None
View Developer Edit
 [2000-11-03 06:10 UTC] bjoern at baer dot main dot de 
Configuring, making PHP with the following options:

./configure \
#  --with-apxs=/usr/local/apache/bin/apxs \
  --with-config-file-path=/usr/local/apache/conf/ \
  --with-ssl=/usr/local/openssl \
  --with-gd=/usr/local \
  --enable-t1lib=/usr/local \
  --with-mysql=/usr/local \
  --enable-track-vars \
  --with-mcrypt \
  --with-xml \
  --with-yp \
  --with-ldap \
  --enable-ftp \
  --with-ttf \
  --enable-sysvshm \
  --enable-sysvsem \
  --enable-url-fopen-wrapper=yes \
  --enable-versioning \
  --enable-dba

make compiles a PHP binary, but:

www@w3bus:/usr/local/src/baerli/php4 > ./php
Floating point exception (core dumped)

It dumps a php.core (536576 Bytes), but I don't know how to analyze it?

TIA, Bj?rn.

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 [2000-11-03 07:19 UTC] bjoern at baer dot main dot de 
gdb php php.core shows:

Core was generated by `php'.
Program terminated with signal 8, Floating point exception.
Reading symbols from /usr/lib/libpam.so.1...done.
Reading symbols from /usr/lib/libstdc++.so.2...done.
Reading symbols from /usr/lib/libg++.so.4...done.
Reading symbols from /usr/lib/libm.so.2...done.
Reading symbols from /usr/lib/libcrypt.so.2...done.
Reading symbols from /usr/lib/libc_r.so.3...done.
Reading symbols from /usr/libexec/ld-elf.so.1...done.
#0  0x80820ed in php_minit_crypt (type=1, module_number=2,
    executor_globals=0x813e800) at crypt.c:109
109             srand48((unsigned int) time(0) * getpid() * (php_combined_lcg() * 10000.0));
 [2000-11-03 11:41 UTC] sniper@php.net 
please update your cvs..and if it still crashes, reopen
this bug report.

--Jani
 [2000-11-03 12:56 UTC] bjoern at baer dot main dot de 
Same result as above.
 [2000-11-28 18:33 UTC] bjoern at baer dot main dot de 
Doesn't work :-(
 [2000-11-29 15:57 UTC] sniper@php.net 
Do you have any example code (short) which can be used to reproduce this?

--Jani
 [2000-12-23 08:59 UTC] bjoern at baer dot main dot de 
It works now when changing line 109 in ext/standard/crypt.c to the following code:

srand48((long)time(NULL) * (long)getpid() * (long)(php_combined_lcg()*(double)10000.0));

With this code PHP doesn't crash under FreeBSD with a floating point exception and everything works fine. Please be so kind and change the code in CVS, thanks.
 [2001-01-09 17:45 UTC] sniper@php.net 
Fix committed by Derick Rethans. 

--Jani
 
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