rust/compiler/rustc_hir_analysis
Eduardo Sánchez Muñoz c599761140 rustc_hir_analysis: add a helper to check function the signature mismatches
This function is now used to check `#[panic_handler]`, `start` lang item, `main`, `#[start]` and intrinsic functions.

The diagnosis produced are now closer to the ones produced by trait/impl method signature mismatch.
2023-09-19 18:15:23 +02:00
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For high-level intro to how type checking works in rustc, see the type checking chapter of the rustc dev guide.