[mpich-devel] Two issues with MPI_File error handling

[Rob Latham]

On 05/07/2015 11:34 AM, Lisandro Dalcin wrote:
> On 7 May 2015 at 18:44, Rob Latham <robl at mcs.anl.gov> wrote:
>>
>>> 1) MPI_File_call_errhandler(file, value) should return MPI_SUCCESS
>>> instead of value under normal operation (as the MPI spec says), and
>>> particularly if the error handler is set to MPI_ERRORS_RETURN. This
>>> bug is trivial to fix.
>>
>>
>> Trivial to fix...if we only had to worry about  C and Fortran!
>
> I'm probably missing something here, so I have to ask.
>
> I said this was "trivial to fix" for the particular case of
> MPI_ERRORS_RETURN. How should C++ bindings behave in case
> MPI_ERRORS_RETURN is set? In other cases, I agree with you, fixing
> this beast is not easy. However, you have a point about C++ bindings
> being deprecated.

It is I who was missing something.  I read the code too fast, saw the 
special C++ case, and thought it mattered for MPI_ERRORS_RETURN.

This one is easy.  The core dumping one is a little more work but I see 
an angle of attack now.

==rob

>
>

-- 
Rob Latham
Mathematics and Computer Science Division
Argonne National Lab, IL USA