Chayim Refael Friedman 6b133c6b1b Implement fallback properly
fallback.rs was ported straight from rustc (minus the lint parts).

This fixes the `!` regressions.
2025-09-24 20:42:06 +03:00
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2025-09-24 20:42:06 +03:00
2025-09-24 20:42:06 +03:00