Rollup of 4 pull requests - #65406

Closed

Centril wants to merge 16 commits into

rust-lang:masterfrom

Centril:rollup-pwwfb94

Commits on Oct 2, 2019

Compute the layout of uninhabited structs
oli-obk
committed
4eb5fcb

Commits on Oct 9, 2019

Move test next to likeminded ones
oli-obk
committed
76a7667
Refactor a nested `if` to a `match`
oli-obk
committed
76fe6a4

Commits on Oct 10, 2019

Tweak `tcx` usage in `lub_concrete_regions()`.
nnethercote
committed
53e7393
Special-case `ReEmpty` in `expand_node()`.
nnethercote
committed
59e41ed
Remove `tag` from `iterate_until_fixed_point()`.
nnethercote
committed
8cd25e7
Check that we don't access nonexisting union fields
oli-obk
committed
373c362
resolve: Mark macros starting with an underscore as used
petrochenkov
committed
e8af4c1
expand: Simplify expansion of derives
petrochenkov
committed
1270140

Commits on Oct 13, 2019

Remove the `Option` in `TokenStream`.
nnethercote
committed
5c93492
Use `TokenStream::default()` in more places.
nnethercote
committed
1ce0347
Lazify some `mac_placeholder()` calls.
nnethercote
committed
18b48bf

Commits on Oct 14, 2019