[omniORB] [External] Re: Exception not caught - omniORB-4.2.0

[Prasath_Palaniappan at amat.com]

Hi Duncan,

As we discussed earlier, we understood that gcc compiler is the root cause (in below mail) for this issue “Exception not caught - omniORB-4.2.0”.
But still we did not get any solution for our query from gcc support and also the same type of issue (bug in gcc on AIX mentioned in below email) has already been posted long back in gcc support.
That is also not yet answered by gcc support. This is very critical for us.

So, we request your thought on this issue whether is there any possibility to handle this issue on omniORB Code? or any workaround to fix this issue?
If so, could you please guide us what need to be changed in omniORB code or any solution to make it work. Then we can do that to get rid off this issue.

Sincerely waiting for your response.

Thanks & Regards,
P. Prasath.
_____________________________________________
From: Prasath Palaniappan
Sent: Thursday, December 12, 2019 2:56 PM
To: Duncan Grisby <duncan at grisby.org>; omniorb-list at omniorb-support.com
Cc: Shankar Chinnusamy <Shankar_Chinnusamy at amat.com>
Subject: RE: [External] Re: [omniORB] Exception not caught - omniORB-4.2.0


Hi Duncan,

We posted this query to gcc and got the response i.e. this is a bug in gcc on AIX. Please find the below link,
https://www.spinics.net/lists/gcchelp/msg49970.html

Thank you so much for your prompt support.

Thanks & Regards,
P. Prasath.
_____________________________________________
From: Prasath Palaniappan
Sent: Wednesday, December 11, 2019 7:32 PM
To: 'Duncan Grisby' <duncan at grisby.org<mailto:duncan at grisby.org>>; omniorb-list at omniorb-support.com<mailto:omniorb-list at omniorb-support.com>
Cc: Shankar Chinnusamy <Shankar_Chinnusamy at amat.com<mailto:Shankar_Chinnusamy at amat.com>>
Subject: RE: [External] Re: [omniORB] Exception not caught - omniORB-4.2.0


Hi Duncan,

As you suggested, I am looking into it on compiler and C++ runtime.
I recompiled the gcc-8.2.0 with "--enable-threads" option in order to fix the issue as mentioned in gcc page https://gcc.gnu.org/install/configure.html

I compiled omniORB and examples with this newly built gcc and tested the call_back example and ran into the same issue.
Gone through the traces and observed that omniDynamic library is not linked but this library does get linked and get initialized when we run the omniORB which is compiled with gcc-4.8.3.
omniORB with gcc-4.8.3:
omniORB: Initialising omniDynamic library.
omniORB with gcc-8.2.0:
omniORB: (0) 2019-12-11 01:33:35.484672: Information: the omniDynamic library is not linked.

I agree this is an information, but curious to know whether it impacts anything since it is named as dynamic library.
I looked into forum and found the same post in below link,
https://omniorb-list.realvnc.narkive.com/3WcwVC6I/omniorb-information-the-omnidynamic-library-is-not-linked
and tried your solution by setting "export ORBendPointPublish=ipv4".
It gets reflected in configuration as below but still the omniDynamic is not linked.
omniORB:   endPointPublish = ipv6
And also another query in below link which seems the same, but not answered yet.
https://www.omniorb-support.com/pipermail/omniorb-list/2010-February/030534.html

I am not blaming omni code. I am looking forward to you throwing some light to proceed further in this issue.

Thanks & Regards,
P. Prasath.

-----Original Message-----
From: Duncan Grisby <duncan at grisby.org<mailto:duncan at grisby.org>>
Sent: Wednesday, November 6, 2019 9:53 PM
To: Prasath Palaniappan <Prasath_Palaniappan at amat.com<mailto:Prasath_Palaniappan at amat.com>>; omniorb-list at omniorb-support.com<mailto:omniorb-list at omniorb-support.com>
Cc: Shankar Chinnusamy <Shankar_Chinnusamy at amat.com<mailto:Shankar_Chinnusamy at amat.com>>
Subject: [External] Re: [omniORB] Exception not caught - omniORB-4.2.0

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On Tue, 2019-11-05 at 18:06 +0000, Prasath via omniORB-list wrote:

[...]
> But when we run the omniORB + application which is compiled with gcc-
> 8.2.0, omniORB gets crashed because it unable to catch the Exception
> “CommFailure” and lead into termination.

This is exactly the same thing you reported back in April:

https://www.omniorb-support.com/pipermail/omniorb-list/2019-April/032050.html

The answer now is the same as the answer then. omniORB's code is correct. It has code that catches the exception. For some reason in your system it is not being caught, but that is not omniORB's fault.

[...]
> But the exception does not get caught with the catch when compiled
> omniORB with gcc-8.2.0.
> Could you please clarify us the cause for this issue and why ominORB
> unable to handle the exception if gcc-8.2.0 and also provide your
> suggestions to fix this issue?

Why do you insist on thinking that omniORB is to blame here?  As you say yourself, the same code works totally fine when you use gcc 4.8.3.
The one thing you have changed is the compiler version. THAT is the culprit, not omniORB. My suggestion to fix the issue is to find a compiler that works.

Duncan.

--
 -- Duncan Grisby         --
  -- duncan at grisby.org<mailto:duncan at grisby.org>     --
   -- http://www.grisby.org --


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