7cc8c44871
Ignore type of projections for upvar capturing Fix #89606 Ignore type of projections for upvar capturing. Originally HashMap is used, and the hash/eq implementation of Place takes the type of projections into account. These types may differ by lifetime which causes #89606 to ICE. I originally considered erasing regions but `place.ty()` is used when creating upvar tuple type, more than just serving as a key type, so I switched to a linear comparison with custom eq (`compare_place_ignore_ty`) instead. r? `@wesleywiser` `@rustbot` label +T-compiler
For high-level intro to how type checking works in rustc, see the type checking chapter of the rustc dev guide.