Yeah, I finally traced it to an MCA param setting in my default param file. I 
swear, as much as I like our MCA param system, there are times like this when 
it leaves something to be desired.

Sigh. Sorry for the “false” alarm.


> On Jul 17, 2015, at 8:54 PM, Gilles Gouaillardet 
> <gilles.gouaillar...@gmail.com> wrote:
> 
> Ralph,
> 
> based on the source code (ompi_mpi_params.c:91) I was expecting a Boolean 
> ompi_mpi_param_check
> 
> Cheers,
> 
> Gilles
> 
> On Saturday, July 18, 2015, Ralph Castain <r...@open-mpi.org 
> <mailto:r...@open-mpi.org>> wrote:
> Yep, I checked:
> 
>      MPI parameter check: runtime
> 
> 
> 
>> On Jul 17, 2015, at 8:00 PM, Gilles Gouaillardet 
>> <gilles.gouaillar...@gmail.com 
>> <javascript:_e(%7B%7D,'cvml','gilles.gouaillar...@gmail.com');>> wrote:
>> 
>> Ralph,
>> 
>> I will try to reproduce this.
>> I guess you already checked the output of ompi_info to confirm params are 
>> checked at runtime.
>> 
>> Cheers,
>> 
>> Gilles
>> 
>> On Saturday, July 18, 2015, Ralph Castain <r...@open-mpi.org 
>> <javascript:_e(%7B%7D,'cvml','r...@open-mpi.org');>> wrote:
>> Hi folks
>> 
>> I keep getting segfault errors when testing 1.10, while others say the tests 
>> are passing for them. The tests are in the onesided area, but I don’t 
>> believe they necessarily are a onesided issue.
>> 
>> Specifically, the tests (e.g., test_start1.c) call MPI_Win_set_errhandler 
>> with a NULL argument for the first parameter (MPI_win). Looking at the code 
>> for that function, I see this:
>> 
>> int MPI_Win_set_errhandler(MPI_Win win, MPI_Errhandler errhandler)
>> {
>>     MPI_Errhandler tmp;
>> 
>>     OPAL_CR_NOOP_PROGRESS();
>> 
>>     if (MPI_PARAM_CHECK) {
>>         OMPI_ERR_INIT_FINALIZE(FUNC_NAME);
>> 
>>         if (ompi_win_invalid(win)) {
>>             return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_WIN,
>>                                           FUNC_NAME);
>>         } else if (NULL == errhandler ||
>>                    MPI_ERRHANDLER_NULL == errhandler ||
>>                    (OMPI_ERRHANDLER_TYPE_WIN != 
>> errhandler->eh_mpi_object_type &&
>>                     OMPI_ERRHANDLER_TYPE_PREDEFINED != 
>> errhandler->eh_mpi_object_type) ) {
>>             return OMPI_ERRHANDLER_INVOKE(win, MPI_ERR_ARG, FUNC_NAME);
>>         }
>>     }
>> 
>>     /* Prepare the new error handler */
>>     OBJ_RETAIN(errhandler);
>> 
>>     /* Ditch the old errhandler, and decrement its refcount.  On 64
>>        bits environments we have to make sure the reading of the
>>        error_handler became atomic. */
>>     do {
>>         tmp = win->error_handler;
>>     } while (!OPAL_ATOMIC_CMPSET(&(win->error_handler), tmp, errhandler));
>>     OBJ_RELEASE(tmp);
>> 
>>     /* All done */
>>     return MPI_SUCCESS;
>> }
>> 
>> If someone built with —with-mpi-param-check=always or runtime, then this 
>> function will return an error when given the NULL argument. Otherwise, it 
>> will definitely segfault. According to the configure output, this option is 
>> supposed to default to “runtime”. I don’t set it in my configury, so I would 
>> have thought this was the case. And when I look at the config.log, I see:
>> 
>> configure:10401: checking if want run-time MPI parameter checking
>> configure:10425: result: runtime
>> 
>> 
>> However, what I’m seeing implies that this is *not* the case - i.e., we 
>> aren’t checking MPI params, and hence I am crashing. Does anyone have any 
>> thoughts on what could be going on? Is this test itself even correct?
>> 
>> Ralph
>> 
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