From: jbparsons at ucdavis dot edu
Operating system: "unslung" - www.nslu2-linux.org
PHP version: 5.0.4
PHP Bug Type: Reproducible crash
Bug description: zend_strtod() broken on big-endian arm
Description:
------------
On big-endian arm systems, php sometimes crashes (infinite loop) inside
zend_strtod().
The problem seems to be the code at line 261 of zend_strtod.c, which
apparently assumes that every arm system has little-endian integers:
#if defined(IEEE_LITTLE_ENDIAN) + defined(VAX) + defined(__arm__)
#define Storeinc(a,b,c) (((unsigned short *)a)[1] = (unsigned short)b, \
((unsigned short *)a)[0] = (unsigned short)c, a++)
#else
#define Storeinc(a,b,c) (((unsigned short *)a)[0] = (unsigned short)b, \
((unsigned short *)a)[1] = (unsigned short)c, a++)
#endif
Reproduce code:
---------------
<?php
echo "start";
if ("79e88e6db0c25ca1ee5e2aac35a24d6c"
== "79e88e6db0c25ca1ee5e2aac35a24d6c")
{
echo "passed";
}
echo "end";
?>
Expected result:
----------------
startend
Actual result:
--------------
(gdb) run
Starting program: /share/hdd/data/home/jp30/t/php foo.php
start
[...minutes pass, then Ctrl-C is pressed...]
Program received signal SIGINT, Interrupt.
0x00146528 in zend_strtod ()
(gdb) bt
#0 0x00146528 in zend_strtod ()
Cannot access memory at address 0x4
--
Edit bug report at http://bugs.php.net/?id=33227&edit=1
--
Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=33227&r=trysnapshot4
Try a CVS snapshot (php5.0):
http://bugs.php.net/fix.php?id=33227&r=trysnapshot50
Try a CVS snapshot (php5.1):
http://bugs.php.net/fix.php?id=33227&r=trysnapshot51
Fixed in CVS: http://bugs.php.net/fix.php?id=33227&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=33227&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=33227&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=33227&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=33227&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=33227&r=support
Expected behavior: http://bugs.php.net/fix.php?id=33227&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=33227&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=33227&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=33227&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=33227&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=33227&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=33227&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=33227&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=33227&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=33227&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=33227&r=mysqlcfg
