ID: 31433
User updated by: dgrimes at scvl dot com
Reported By: dgrimes at scvl dot com
-Status: Feedback
+Status: Open
Bug Type: Reproducible crash
Operating System: SCO OpenServer 5
PHP Version: 4CVS, 5CVS (2005-01-22)
New Comment:
SCO sent this to me:
Dean, Please have a look at this TA and let me know if you think this
will help your situation. It appears that this is applicable to
OSr5.0.0 to 5.0.6.
Thanks,
Todd
*********************** TA # 100815 **********************************
Calling realpath(S) from within my program causes a core dump.
KEYWORDS: v5 5.0.0 osr5 openserver dev sys development system ds getcwd
realpath memory fault coredump core dump ENGREF LTD-246-807
RELEASE: SCO OpenServer Development System Release 5.0.0
PROBLEM: If I make a call to realpath(S) from within my source I find
that, when compiled, the resulting binary will terminate with
the error:
Memory fault(coredump)
CAUSE: The character buffer passed to realpath(S) is being passed
to
a function called pathcanon(). This function is calling
getcwd(S)
with a buffer size of 4096 bytes. getcwd(S) clears this
buffer
and overruns the stack causing the core dump.
SOLUTION: This problem has been reported to SCO Engineering.
To work around this problem, make sure that the character
buffer passed to realpath(S) is 4096 bytes in size:
char buff[4096];
realpath(filename, buff);
where 'filename' is the name of the file whose path you wish
to resolve.
--------------------------------------
Thanks,
Dean
Previous Comments:
------------------------------------------------------------------------
[2005-01-26 06:18:49] [EMAIL PROTECTED]
See also bug #23665
------------------------------------------------------------------------
[2005-01-26 06:14:08] [EMAIL PROTECTED]
You could ask SCO support why the realpath() function is called from
libsocket.so.2 and not from libc.so.1..
------------------------------------------------------------------------
[2005-01-26 05:49:06] [EMAIL PROTECTED]
Can you provide the above backtrace but using the snapshot?
------------------------------------------------------------------------
[2005-01-24 22:59:30] dgrimes at scvl dot com
That version compiled just fine but I still have the original problem.
PHP 4.0.6 compiles and doesn't have this issue. It's the version were
using now. I can open an issue with SCO if you think it's a bad libc.
Can you give me more information that supports that conclusion?
Dean
------------------------------------------------------------------------
[2005-01-22 21:34:09] [EMAIL PROTECTED]
Please try using this CVS snapshot:
http://snaps.php.net/php4-STABLE-latest.tar.gz
For Windows:
http://snaps.php.net/win32/php4-win32-STABLE-latest.zip
The compile failure should at least be fixed now.
------------------------------------------------------------------------
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