There are numerous bug reports related to Fortran submodules, so I’m not entirely if this is new. But I couldn’t find the ICE reported anywhere. I have this test code:
module foo_m
implicit none
private
!!!public :: merge
interface merge
module procedure merge_this
end interface
interface
module subroutine merge_this (x)
integer, intent(in) :: x
end subroutine merge_this
end interface
end module foo_m
submodule (foo_m) foo_s
implicit none
contains
module subroutine merge_this (x)
integer, intent(in) :: x
end subroutine merge_this
subroutine use_merge ()
call merge(1)
end subroutine use_merge
end submodule foo_s
When compiling it with nvfortran 24.11, I get this generic internal compiler error:
nvfortran-Fatal-/home/cweiss/local/hpc_sdk/Linux_x86_64/24.11/compilers/bin/tools/fort1 TERMINATED by signal 11
The code compiles when I declare merge as public. Also, when I replace merge by a different name (and do not declare the interface public), I instead get this error:
NVFORTRAN-S-0155-Could not resolve generic procedure merge_loc
I assume that in the case of just merge, the compiler tries to use the intrinsic Fortran routine, which does not fit here.
In my understanding, submodules should be able to access private components from parent modules. That nvfortran cannot do so seems to be a known problem, right? Is there any workaround except for going through the code and putting the adequate public statements everywhere?