Replace zeroing-on-drop with filling-on-drop.#23535

Merged

bors merged 9 commits intorust-lang:masterfrom

pnkfelix:fsk-filling-drop

Mar 28, 2015

Commits on Mar 26, 2015

Switch drop-flag to `u8` to allow special tags to instrument state.
pnkfelix
committed
Regression tests for issues uncovered only post the run-pass and compile-fail tests.
pnkfelix
committed
filling-drop: switch `DTOR_NEEDED` and `DTOR_DONE` to non-trivial values.
pnkfelix
committed
A better `core::mem::dropped` implementation suggested by huonw on the PR.
pnkfelix
committed
Added instability markers to `POST_DROP_*` consts, and related opt-in's.
pnkfelix
committed
Use `-Z force-dropflag-checks=on/off` for emitting sanity-check.
pnkfelix
committed
Add tests exercising the dropflag checking functionality.
pnkfelix
committed
add feature flags required post rebase.
pnkfelix
committed

Commits on Mar 27, 2015

workaround pretty-print bugs to placate `make check-pretty`.
pnkfelix
committed