You are viewing a plain text version of this content. The canonical link for it is here.
Posted to dev@qpid.apache.org by "Steve Huston (JIRA)" <qp...@incubator.apache.org> on 2009/07/21 22:28:14 UTC
[jira] Created: (QPID-1998) Possible 0-pointer crash in
SystemInfo::getProcessName()
Possible 0-pointer crash in SystemInfo::getProcessName()
--------------------------------------------------------
Key: QPID-1998
URL: https://issues.apache.org/jira/browse/QPID-1998
Project: Qpid
Issue Type: Bug
Components: C++ Client
Affects Versions: 0.5
Environment: Windows
Reporter: Steve Huston
Assignee: Steve Huston
Fix For: 0.6
As reported on users@qpid.apache.org by Alan Conway:
Nithesh Shetty wrote:
[snip]
>
> Now the problem is it give exception if u check the call stack then
> it show ptr = 0x00000000 line 664
> qpid::sys::SystemInfo::getProcessName()
> qpid::client::ConnectionHandler::ConnectionHandle()
> qpid::client::ConnectionImpl::ConnectionImp()
> qpid::client:Connection::open() ( open connection is from read thread)
>
> tested the above code on windows
>
There's a bug in the windows code for getProcessName which might be the cause of
your woes.
std::string SystemInfo::getProcessName()
{
// Only want info for the current process, so ask for something specific.
// The module info won't be used here but it keeps the snapshot limited to
// the current process so a search through all processes is not needed.
HANDLE snap = CreateToolhelp32Snapshot(TH32CS_SNAPMODULE, 0);
if (snap == INVALID_HANDLE_VALUE)
return 0;
^^^^^^^^
This return statment is constructing a string from a 0 pointer which is going to
lead to a null pointer crash. I don't know if its likely to be the cause of your
crash since I don't know under what circumstances you'd get the
INVALID_HANDLE_VALUE.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
---------------------------------------------------------------------
Apache Qpid - AMQP Messaging Implementation
Project: http://qpid.apache.org
Use/Interact: mailto:dev-subscribe@qpid.apache.org
[jira] Resolved: (QPID-1998) Possible 0-pointer crash in
SystemInfo::getProcessName()
Posted by "Steve Huston (JIRA)" <qp...@incubator.apache.org>.
[ https://issues.apache.org/jira/browse/QPID-1998?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Steve Huston resolved QPID-1998.
--------------------------------
Resolution: Fixed
Fixed; trunk r796581
> Possible 0-pointer crash in SystemInfo::getProcessName()
> --------------------------------------------------------
>
> Key: QPID-1998
> URL: https://issues.apache.org/jira/browse/QPID-1998
> Project: Qpid
> Issue Type: Bug
> Components: C++ Client
> Affects Versions: 0.5
> Environment: Windows
> Reporter: Steve Huston
> Assignee: Steve Huston
> Fix For: 0.6
>
>
> As reported on users@qpid.apache.org by Alan Conway:
> Nithesh Shetty wrote:
> [snip]
> >
> > Now the problem is it give exception if u check the call stack then
> > it show ptr = 0x00000000 line 664
> > qpid::sys::SystemInfo::getProcessName()
> > qpid::client::ConnectionHandler::ConnectionHandle()
> > qpid::client::ConnectionImpl::ConnectionImp()
> > qpid::client:Connection::open() ( open connection is from read thread)
> >
> > tested the above code on windows
> >
> There's a bug in the windows code for getProcessName which might be the cause of
> your woes.
> std::string SystemInfo::getProcessName()
> {
> // Only want info for the current process, so ask for something specific.
> // The module info won't be used here but it keeps the snapshot limited to
> // the current process so a search through all processes is not needed.
> HANDLE snap = CreateToolhelp32Snapshot(TH32CS_SNAPMODULE, 0);
> if (snap == INVALID_HANDLE_VALUE)
> return 0;
> ^^^^^^^^
> This return statment is constructing a string from a 0 pointer which is going to
> lead to a null pointer crash. I don't know if its likely to be the cause of your
> crash since I don't know under what circumstances you'd get the
> INVALID_HANDLE_VALUE.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
---------------------------------------------------------------------
Apache Qpid - AMQP Messaging Implementation
Project: http://qpid.apache.org
Use/Interact: mailto:dev-subscribe@qpid.apache.org