Rollup of 4 iffy pull requests Successful merges: - #89234 (Disallow non-c-like but "fieldless" ADTs from being casted to integer if they use arbitrary enum discriminant) - #91045 (Issue 90702 fix: Stop treating some crate loading failures as fatal errors) - #91394 (Bump stage0 compiler) - #91411 (Enable svh tests on msvc) Failed merges: r? `@ghost` `@rustbot` modify labels: rollup
For high-level intro to how type checking works in rustc, see the type checking chapter of the rustc dev guide.