http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45170
--- Comment #27 from Steve Kargl <sgk at troutmask dot apl.washington.edu> 2011-08-29 16:22:16 UTC --- On Mon, Aug 29, 2011 at 06:47:41AM +0000, burnus at gcc dot gnu.org wrote: > 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 ...] > >From F2003: C402 (R402) The type-param-value for a kind type parameter shall be an initialization expression. 7.1.7 An initialization expression is an expression with limitations that make it suitable for use as a kind type parameter, initializer, or named constant. It is an expression in which each operation is intrinsic, and each primary is (1) A constant or subobject of a constant, character(:),allocatable::string integer::length length=5 allocate(character(len=length)::string) length is not a constant.
