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rustc_hir_analysis: add a helper to check function the signature mismatches

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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.
This commit is contained in:
Eduardo Sánchez Muñoz 2023-09-17 20:13:05 +02:00
parent 0692db1a90
commit c599761140
48 changed files with 423 additions and 385 deletions
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6
compiler/rustc_infer/messages.ftl
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@ -198,6 +198,10 @@ infer_nothing = {""}
infer_oc_cant_coerce = cannot coerce intrinsics to function pointers
infer_oc_closure_selfref = closure/generator type that references itself
infer_oc_const_compat = const not compatible with trait
infer_oc_fn_lang_correct_type = {$lang_item_name ->
[panic_impl] `#[panic_handler]`
*[lang_item_name] lang item `{$lang_item_name}`
} function has wrong type
infer_oc_fn_main_correct_type = `main` function has wrong type
infer_oc_fn_start_correct_type = `#[start]` function has wrong type
infer_oc_generic = mismatched types
@ -337,6 +341,7 @@ infer_subtype = ...so that the {$requirement ->
[no_else] `if` missing an `else` returns `()`
[fn_main_correct_type] `main` function has the correct type
[fn_start_correct_type] `#[start]` function has the correct type
[fn_lang_correct_type] lang item function has the correct type
[intrinsic_correct_type] intrinsic has the correct type
[method_correct_type] method receiver has the correct type
*[other] types are compatible
@ -350,6 +355,7 @@ infer_subtype_2 = ...so that {$requirement ->
[no_else] `if` missing an `else` returns `()`
[fn_main_correct_type] `main` function has the correct type
[fn_start_correct_type] `#[start]` function has the correct type
[fn_lang_correct_type] lang item function has the correct type
[intrinsic_correct_type] intrinsic has the correct type
[method_correct_type] method receiver has the correct type
*[other] types are compatible