Rollup of 6 pull requests - #65885

Merged

bors merged 16 commits into

rust-lang:masterfrom

Centril:rollup-y6b2qbf

Oct 28, 2019

Commits on Oct 19, 2019

Stabilize `Option::flatten`
eopb
committed
65af429

Commits on Oct 27, 2019

syntax/attr: reduce reliance on parser
Centril
committed
1632940
rustc, rustc_passes: don't depend on syntax_expand.
Centril
committed
fb12c70
librustc_lexer: Enhance documentation
popzxc
committed
993b920
doc: explain why it is unsafe to construct Vec<u8> from Vec<u16>

tesuji
and
steveklabnik
committed
3f98078
Implement core::intrinsics::caller_location.
anp
committed
743964a
Panicking infra uses &core::panic::Location.
anp
committed
aec97e0
Implementation of const caller_location.
anp
committed
017877c
Always use consteval to codegen caller_location.
anp
committed
86e55b1
Gather together usefulness tests
Nadrieril
committed
09f9947

Commits on Oct 28, 2019