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

--- Comment #26 from Tobias Burnus <burnus at gcc dot gnu.org> 2011-08-29 
06:47:41 UTC ---
(In reply to comment #24)
> Your code in comment #14 is (I believe) invalid, and gfortran
> is issuing the correct error message.

I get:
  Error: Variable 'length' cannot appear in the expression at (1)

However, I believe that 
  allocate(character(len=length)::string)
is valid.

One has (F2008):
  R626 allocate-stmt is ALLOCATE ( [ type-spec :: ] allocation-list
                                   [, alloc-opt-list ] )
with
  R402 type-spec  is  intrinsic-type-spec  or  derived-type-spec
with 
  R404 intrinsic-type-spec  is  [...]
                            or  CHARACTER [ char-selector ]
with
  R420 char-selector  is  length-selector [or ...]
with
  R421 length-selector is ( [ LEN = ] type-param-value )  [or ...]

Thus, I do not see any syntax problems; I also couldn't find any constraint or
other reason which renders the code in comment #14 invalid.

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