Re: How to debug "Access not within mapped region" runtime error

[Florian <flad at gmx dot at>]

Florian wrote:
> Jerry DeLisle wrote:
> > Florian wrote:
> > > I have a piece of code causing runtime troubles with gfortran 
> > > (compiling problems are solved thanks to your quick patchings). It 
> > > works with NAG, lahey, and intel fortran compiler, so I guess the 
> > > troubles are related with gfortran, that's why I would ask for advice 
> > > here how to debug the situation.


I could reduce my test case a lot now to show where the gdb seg fault 
comes from. I believe that this might be also the solution to the actual 
problem, though I am not sure yet.

This produces a seg fault in gdb when setting a breakpoint to 
chartestmod.f90:5 and trying to print startdate:


chartest.f90:
-----------------------------
program char_test

use chartestmod

implicit none

   INTEGER Request_Type
   CHARACTER (LEN = 19) :: StartDate

   StartDate='2003-03-15 00:00:00'

   CALL GeomSim(StartDate)

end
-----------------------------

chartestmod.f90:
-----------------------------
module chartestmod

contains

SUBROUTINE GeomSim(StartDate)

   CHARACTER (LEN=*), INTENT(IN) :: StartDate

    print*, startdate

end subroutine


end module
-----------------------------



Now, change in chartestmod.f90 'LEN=*' to 'LEN=19' and gdb does not 
segfault anymore. I somehow think that this is related to my actual 
problem, so: any ideas if this is related to a gfortran bug?

thanks, florian