Rollup of 7 pull requests#93768

Closed

matthiaskrgr wants to merge 16 commits into

rust-lang:masterfrom

matthiaskrgr:rollup-drdtfrp

Commits on Dec 15, 2021

Point at type when a `static` `#[global_allocator]` doesn't `impl` `GlobalAlloc`
estebank
committed

Commits on Dec 24, 2021

Don't allow using unstable features in bootstrap itself
jyn514
committed

Commits on Jan 17, 2022

Only suggest char literal for single-character strings
chordtoll
committed

Commits on Jan 24, 2022

Use `NtCreateFile` instead of `NtOpenFile` to open a file
ChrisDenton
committed

Commits on Feb 7, 2022

Commits on Feb 8, 2022