[Bug fortran/71861] ICE in write_symbol(): bad module symbol

[gerhard.steinmetz.fort...@t-online.de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71861

--- Comment #1 from Gerhard Steinmetz <gerhard.steinmetz.fort...@t-online.de> 
---
Side note :


$ cat z0.f90
module m
   abstract interface
      function abs(x)
         real :: abs, x
      end
   end interface
end


$ gfortran-6 -Wall z0.f90
z0.f90:3:6:

       function abs(x)
      1
Warning: 'abs' declared at (1) may shadow the intrinsic of the same name.  In
order to call the intrinsic, explicit INTRINSIC declarations may be required.
[-Wintrinsic-shadow]