On 5/25/19 7:43 PM, Toon Moene wrote:
On 5/25/19 7:31 PM, Thomas Koenig wrote:
Hi Toon,
On 5/25/19 7:01 PM, Steve Kargl wrote:
For WRF, I suppose you or Martin could be a good citizen and
contact the project to report a bug.
I have thought about this. As a person with experience building and
running weather forecasting codes, I would be first in line to try
this. But the SPEC code could be modified and not resemble a fresh
WRF setup ...
The current version of netcdf has, in module_netcdf_nf_interfaces.F90,
!- nf_put_vara_double
--
Interface
Function nf_put_vara_double(ncid, varid, start, counts, dvals) &
RESULT(status)
USE netcdf_nf_data, ONLY: RK8
Integer, Intent(IN) :: ncid, varid
Integer, Intent(IN) :: start(*), counts(*)
Real(RK8), Intent(IN) :: dvals(*)
Integer :: status
End Function nf_put_vara_double
End Interface
which looks good (well, it's not BIND(C)). In another file,
it has it as a simple INTEGER declaration with EXTERNAL.
I don't know which of the two is actually used.
OK.
One thing I can do (tomorrow) is to download WRF, build it and see how
it uses netcdf.
The trunk compiler I have at hand is revision 271618, so it includes
your update that's the subject of PR90539.
What I started with is some modern versions of the libraries needed:
hdf5-1.10.5, netcdf-c-4.6.3, and netcdf-fortran-4.4.5, built with trunk
revision 271618.
netcdf-c-4.6.3 (the C netcdf library) passed all its own tests.
netcdf-fortran-4.4.5 is the library of Fortran "glue" routines to the C
library.
These are the relevant C interoperability comments during configure,
indicating that it will use BIND(C) declarations for interfacing with
the C library:
checking for Fortran flag to compile .f90 files... none
checking fortran 90 modules inclusion flag... -I
checking if Fortran compiler supports Fortran 2003 ISO_C_BINDING... yes
checking if Fortran compiler supports Fortran 2008 ISO_FORTRAN_ENV
additions... yes
checking if Fortran compiler supports TS29113 standard extension... yes
checking whether F03 native code is desired... yes
However, there *is* a Segmentation Fault when running one of its tests:
cat nf_test/tst_f90.log
Program received signal SIGSEGV: Segmentation fault - invalid memory
reference.
Backtrace for this error:
#0 0x7f915ef0d8b0 in ???
#1 0x7f915ef0cae3 in ???
#2 0x7f915eb6483f in ???
#3 0x7f915fa151cd in __netcdf_MOD_nf90_put_var_1d_fourbytereal
at
/home/toon/netcdf/netcdf-fortran-4.4.5/fortran/netcdf_expanded.f90:940
#4 0x402cfc in netcdftest
at /home/toon/netcdf/netcdf-fortran-4.4.5/nf_test/tst_f90.f90:95
#5 0x40226c in main
at /home/toon/netcdf/netcdf-fortran-4.4.5/nf_test/tst_f90.f90:7
FAIL tst_f90 (exit status: 139)
This is the error location in
/home/toon/netcdf/netcdf-fortran-4.4.5/fortran/netcdf_expanded.f90:
939nf90_put_var_1D_FourByteReal = &
940 nf_put_vara_real(ncid, varid, localStart, localCount,
values)
941 end if
942end function nf90_put_var_1D_FourByteReal
So at least *a* Segmentation Fault is reproducible with these freely
available libraries
Kind regards,
--
Toon Moene - e-mail: t...@moene.org - phone: +31 346 214290
Saturnushof 14, 3738 XG Maartensdijk, The Netherlands
At home: http://moene.org/~toon/; weather: http://moene.org/~hirlam/
Progress of GNU Fortran: http://gcc.gnu.org/wiki/GFortran#news
