strange error message in submodule soaked library

Hi there,

since I have started to make use fo submodules a lot, every know and then I am getting such an error message:

/home/USER/.local/lib/Fortran/Lib_Tools_ifort_NoOMP_20150830/Lib_Tools_ifort_20150830.a(SubMod_Pedigree_Single_FromToFile.o):(.bss+0x980): multiple definition of `MOD_PEDIGREE_SINGLE_20160424$outer_.var$2273'
/home/USER/.local/lib/Fortran/Lib_Tools_ifort_NoOMP_20150830/Lib_Tools_ifort_20150830.a(SubMod_Pedigree_Single_Sort.o):(.data+0x0): first defined here
ld: Warning: size of symbol `MOD_PEDIGREE_SINGLE_20160424$outer_.var$2273' changed from 1080 in /home/USER/.local/lib/Fortran/Lib_Tools_ifort_NoOMP_20150830/Lib_Tools_ifort_20150830.a(SubMod_Pedigree_Single_Sort.o) to 304 in /home/USER/.local/lib/Fortran/Lib_Tools_ifort_NoOMP_20150830/Lib_Tools_ifort_20150830.a(SubMod_Pedigree_Single_FromToFile.o)

This disappears with stuff like commenting/uncommenting write statements etc somewhere, so totally out of nothing. I had such error messages never before. They started to appear when cutting up modules.

The structure I am using in the Modules is

Module Mod_A

Type :: Type_A
   Integer, allocatable :: a
   contains
      Procedure, PAss :: SetA => SubA
End Type_A
Private :: SubA
Interface
Module Subroutine SubA(this,a)
  Implicit None
  Class(Type_A), Intent(InOut) :: this
  Integer, Intent(In) :: a
End Subroutine
.........
End Interface
End Mod_A

The structure in the submodule similar to

Submodule(Mod_A) SubMod_A
contains
  Module Procedure SubA
    Implicit None
    outer:block
      if(not.allocated(this%a)) Then
        exit outer
      end if
      this%a=this%a+a
    end outer
  End Procedure
End SubMod_A

Thus, the main structural elements are: interface definition in the module only, non interface repetition in the submodule, every subroutine contains a "outer:block .... end oute" statement.

Since the error message leads to a total compiliation abort and therefore renders a 10,000 lines library useless, I am already banging my head against the wall about what's going on.

The error is very difficult to reproduce and, as written above, may disapear with uncommenting/commenting almost arbitrary pieces of code.

A first step would be to decrypt the varibales in the error message (outer_.var$2273) but I have no clue how to do that.

Any ideas??

Thanks a lot

Karl