Auto merge of #149032 - matthiaskrgr:rollup-28xhwxa, r=matthiaskrgr

Rollup of 5 pull requests

Successful merges:

 - rust-lang/rust#145610 (Stabilize `char_max_len`)
 - rust-lang/rust#148504 (Fix link in c_longlong documentation)
 - rust-lang/rust#148698 (Fix query cycle when encounter unevaluated const)
 - rust-lang/rust#148865 (move GAT inference prevention hack)
 - rust-lang/rust#149016 (Document the `let this = self;` idiom used in MIR building)

r? `@ghost`
`@rustbot` modify labels: rollup

Author: bors