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Bug 582198 - FORWARD_NULL
FORWARD_NULL
Status: RESOLVED OBSOLETE
Product: libxml2
Classification: Platform
Component: general
git master
Other All
: Normal minor
: ---
Assigned To: Daniel Veillard
libxml QA maintainers
Depends on:
Blocks:
 
 
Reported: 2009-05-11 17:01 UTC by TC Nguyen
Modified: 2021-07-05 13:24 UTC
See Also:
GNOME target: ---
GNOME version: ---


Description TC Nguyen 2009-05-11 17:01:41 UTC 
Please describe the problem:
The FORWARD_NULL checker finds many instances where a pointer is checked against NULL and then later dereferenced. Dereferencing a NULL pointer will cause a program to crash. Typically, this defect results from the code checking for NULL and then not properly handling the condition, or not checking for NULL in a code path.



Steps to reproduce:
1. file rtxsrc.c line # 1608 => exec->counts = NULL;
2. line #1622 check => if ((exec->inputString[exec->index] == 0) && (exec->counts == NULL))
3. Line 1649 check => if (exec->counts == NULL) 


Actual results:
N/A

Expected results:


Does this happen every time?


Other information:
Comment 1 Murray Cumming 2010-03-30 16:05:21 UTC 
Whatever myserious tool it is that shows this, it seems to be a libxml issue rather than a libxml++ issue.
Comment 2 Murray Cumming 2010-06-14 06:59:02 UTC 
Is this a coverity warning?

I guess that a patch would be welcome.
Comment 3 GNOME Infrastructure Team 2021-07-05 13:24:51 UTC 
GNOME is going to shut down bugzilla.gnome.org in favor of gitlab.gnome.org.
As part of that, we are mass-closing older open tickets in bugzilla.gnome.org
which have not seen updates for a longer time (resources are unfortunately
quite limited so not every ticket can get handled).

If you can still reproduce the situation described in this ticket in a recent
and supported software version, then please follow
  https://wiki.gnome.org/GettingInTouch/BugReportingGuidelines
and create a new ticket at
  https://gitlab.gnome.org/GNOME/libxml2/-/issues/

Thank you for your understanding and your help.