Re: Error message from gfortran

[Tobias Burnus <burnus at net-b dot de>]

Hi Salvatore,

Salvatore Filippone wrote:
> I get the following error message from compiling the attached program;
> both Intel 10 and XLF 10 compile this (or the original it was extracted
> from) with no troubles. The problem also happens on a recent (about 2
> weeks) snapshot of 4.4.
> Compiler bug or user error?
>   
I do not see any regression here: The program is rejected here with 
gfortran 4.1, 4.2, 4.3 and 4.4.

However, it is accepted by ifort, openf95, g95, Lahey and NAG f95 thus 
it is probably valid.

* * *

I believe it is valid:

 interface foobar
   subroutine d_foobar(x)
     type(d_foo_type), intent (inout) :: x

and

 interface foobar
   subroutine s_foobar(x)
     type(s_foo_type), intent (inout) :: x

are not ambiguous. Interestingly, there is no problem using:

module foo_mod
 use s_foo_mod
 use d_foo_mod
end module foo_mod

The problem only occurs if one now includes "foo_mod". It could thus be 
a module-reading problem or some other resolving problem.

Can you fill a bug report?

Thanks,

Tobias

PS: Reduced test case:

module one
 type t1
 end type t1
 interface foo
   subroutine my1(x)
     import
     type(t1) :: x
   end subroutine my1
 end interface foo
end module one

module two
 type t2
 end type t2
 interface foo
   subroutine my2(x)
     import
     type(t2) :: x
   end subroutine my2
 end interface foo
end module two

module three
 use one
 use two
end module three

use three ! FAILS HERE
end