https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117832
--- Comment #2 from Iain Buclaw <ibuclaw at gcc dot gnu.org> --- Gave a little test of this flag. Doesn't look like it will be able to replace all the uses where `memset(0)` is currently generated in the D front-end. It probably doesn't harm to have both this and `-ftrivial-auto-var-init=zero` set by default, keeping in the explicit memsets for now. At worst just double zeroing, but I'd expect the middle-end to discard as necessary.
