[Bug fortran/45170] [F2003] allocatable character lengths

["burnus at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45170

--- Comment #18 from Tobias Burnus <burnus at gcc dot gnu.org> 2011-07-15 14:02:45 UTC ---
(In reply to comment #16)
>   Error: Variable 'length' cannot appear in the expression at (1)
> That comes from the specification expression check.

If one removes the check, it works, i.e. it is just a resolution (resolve.c)
problem and not a code generation one.


(In reply to comment #17)
>   subroutine hello (n,string)
>     character(:),allocatable,intent(out)::string
>     integer,intent(in)::n
>     string=helloworld(:n)

That one seems to be a very subtle issue, depending on the modifications (e.g.
allocate(character(len=)) instead of alloc on assignment), one might get the
correct string length - or even the correct string. Looking at the (original)
dump, the string length should be always correct, hence, I think we generate a
slightly wrong tree. The next step would be to look at -fdump-tree-optimized
and then work backwards.