[patch,gfortran] PR 22607: PURE return-by-reference functions

[Richard Henderson]

On Tue, Nov 08, 2005 at 11:54:36PM +0200, Erik Edelmann wrote:
> I do, however, not know much about the backend.  Among the things
> I don't know is whether DECL_IS_PURE (fndecl) = 1 is supposed to
> work for return-by-ref. functions or not (might this actually be
> a backend bug?).  Comments from people with better understanding
> of the backend are wellcome.

If the function writes to memory, it isn't "pure" in the 
backend sense.  Return-by-ref would seem to violate that.


r~