[Bug fortran/33339] GFORTRAN OPTIMIZATION ERROR ABOVE -O0 FOR MPICH2 TEST F90_RMA/BASEATTRWINF90.F90

["longb at cray dot com" <gcc-bugzilla at gcc dot gnu dot org>]

------- Comment #6 from longb at cray dot com  2007-09-12 21:05 -------
Subject: Re:  GFORTRAN OPTIMIZATION ERROR ABOVE -O0 FOR
 MPICH2 TEST F90_RMA/BASEATTRWINF90.F90



sgk at troutmask dot apl dot washington dot edu wrote:
> ------- Comment #5 from sgk at troutmask dot apl dot washington dot edu  2007-09-10 18:28 -------
> Subject: Re:  GFORTRAN OPTIMIZATION ERROR ABOVE -O0 FOR MPICH2 TEST
> F90_RMA/BASEATTRWINF90.F90
>
> On Mon, Sep 10, 2007 at 04:03:21PM -0000, longb at cray dot com wrote:
>   
>> gcc version 4.2.1 20070719 (rpm:3)
>>
>> Note: The version of gcc we are using is not the same as the one you 
>> noted, and for the XT systems all linking is static.
>>     
>
> I checked my version again, and it was 4.2.1 20070523.  There
> aren't many significant changes between this version and yours
> to at least the Fortran front-end.  I just rebuild 4.2.2 (note
> it's been marked for a release) and get
>
> GNU F95 version 4.2.2 20070905 (prerelease) (x86_64-portbld-freebsd7.0)
>
> Your program with my addition and static linking gives
>
> node10:kargl[254] ../mpich2/bin/mpiexec -machinefile mf1 -n 1 ./long
>  Got right value for WIN_DISP_UNIT ( 4 , should be 4 )
> node10:kargl[255] ./long
>  Got right value for WIN_DISP_UNIT ( 4 , should be 4 )
>
>   
>> Our version of mpich2 appears to be older.  I can ask the MPI group for 
>> a newer version.
>>     
>
> The mpich2 changelog suggests that there may be some changes which
> effect gfortran+mpich2.
>   

I had our MPI guy run the test with a virgin mpich2 build and he also 
finds no error.  This
appears to be a bug in the version of the mpich2 library we have on our 
system.  I've reassigned
the bug to them.

Please close the bug against gfortran.

Cheers,
Bil


>
>   


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33339