http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56867
--- Comment #6 from Thomas Koenig <tkoenig at gcc dot gnu.org> 2013-04-08 20:23:59 UTC --- I stumbled across this while looking at PR 30398, when I wanted to add some dependency checking to make call memcpy instead of memmove if there was no dependency. Look for an optimization, find a bug... I have been working on the idea to add an argument to gfc_trans_scalar_assign (which does not know about the gfc_expr*s any more) which indicates if there coul be a dependency, which could be checked via gfc_check_dependency and then passed to gfc_trans_string_copy. This kind of analysis could also be used in PR 56594 to create a temporary.
