8a392a5992
Fix drop-tracking ICE when a struct containing a field with a significant drop is used across an await Previously, drop-tracking would incorrectly assume the struct would be dropped immediately, which was not true. Fixes #98476. Also fixes https://github.com/rust-lang/rust/issues/98477, I think because the parent HIR node for type variables is the whole function instead of the expression where the variable is used. r? `@eholk`
For high-level intro to how type checking works in rustc, see the type checking chapter of the rustc dev guide.