Question: Would it be permissible to create a DW_TAG_imported_declaration
for a DW_TAG_namelist with an empty DW_TAG_namelist_item list and rely on
the compiler to fetch the namelist items from the module's DW_TAG_namelist?
I think if you are importing, you don't even need the DW_TAG_namelist:
DW_TAG_imported_declaration '/nml'
DW_AT_import DW_FORM_ref_addr [ reference to other file's DWARF ]
I'm a bit weak on how that cross-file reference works, but reading section 3.2.3
that's what I come up with.
I wish "my" compiler generated namelist entries, but it doesn't and so I
can't point to a worked example. I append my understanding of what you
would do with the suggested fix above.
-John
---[ file 1 ]---
module mm
integer :: ii
real :: rr
NAMELIST /nml/ ii, rr
end module mm
---[ sketch of DWARF for file 1 ]---
DW_TAG_module 'mm'
DW_TAG_variable 'ii'
DW_TAG_variable 'rr'
DW_TAG_namelist '/nml' <--- $1
DW_TAG_namelist_entry 'rr'
DW_TAG_namelist_entry 'ii'
---[ file 2 ]---
subroutine read_nml()
use mm, only: nml
read(99, nml=nml)
end subroutine read_nml
---[ sketch of DWARF for file 2 ]---
DW_TAG_subprogram 'read_nml'
DW_TAG_imported_declaration '/nml'
DW_AT_import DW_FORM_ref_addr [ somehow a reference to $1 ]
---[ end ]---
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