RE: [Linux-ia64] IA64 strncpy in 2.2.4-30 - bug and patch

[Chen, Kenneth W]

We found more bugs in the code, and here is an updated patch to fix them.
Note this patch supercedes the one I sent yesterday.

Also attached is the test program we used to verify the fix.

- Ken Chen


-----Original Message-----
From: Chen, Kenneth W 
Sent: Wednesday, November 06, 2002 6:57 PM
To: Chen, Kenneth W; Reese Faucette; address@hidden;
address@hidden
Cc: Akyil, Levent; address@hidden; Mallick, Asit K
Subject: RE: [Linux-ia64] IA64 strncpy in 2.2.4-30 - bug and patch


Here is a patch that fixes bugs in strncpy function included in glibc-2.2.4.  
We found there are more bugs during the investigation.  Please pound on this 
patch and let us know any issues.

- Ken Chen


-----Original Message-----
From: Chen, Kenneth W 
Sent: Tuesday, November 05, 2002 4:44 PM
To: Reese Faucette; address@hidden; address@hidden
Cc: Akyil, Levent; address@hidden
Subject: RE: [Linux-ia64] IA64 strncpy in 2.2.4-30 - bug and patch


I'm not able to reproduce the bug with your test case ...

-----Original Message-----
From: Reese Faucette [mailto:address@hidden
Sent: Tuesday, November 05, 2002 4:39 PM
To: address@hidden; address@hidden
Cc: Akyil, Levent; address@hidden
Subject: [Linux-ia64] IA64 strncpy in 2.2.4-30 - bug and patch


Hi,
I opened a bug with RedHat about a problem with strncpy() in glibc-2.2.4-30 on 
IA64, see https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=76952, but I've 
been told you folks are really the ones to talk to.
 
The bug report contains a testcase illustrating the problem, and also a patch.  
In short, the recovery code is busted, even after the patch from David 
Mosberger.  Attached is a copy of the patch from the bug report.
 
I have a testcase which exercizes both the recovery3 and recovery4 paths if 
you're interested.  
Regards,
-reese faucette
 
 


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strncpy2.fix.patch
Description: strncpy2.fix.patch

bug.c
Description: bug.c

bug2.c
Description: bug2.c