Nicholas Nethercote ebfac4ecaf Avoid using () in derive(From) output. ...

Using an error type instead of `()` avoids the duplicated errors
on `struct SUnsizedField` in `deriving-from-wrong-target.rs`. It also
improves the expanded output from this:
```
struct S2(u32, u32);
impl ::core::convert::From<()> for S2 {
    #[inline]
    fn from(value: ()) -> S2 { (/*ERROR*/) }
}
```
to this:
```
struct S2(u32, u32);
impl ::core::convert::From<(/*ERROR*/)> for S2 {
    #[inline]
    fn from(value: (/*ERROR*/)) -> S2 { (/*ERROR*/) }
}
```
The new code also only matchs on `item.kind` once.

2025-08-19 18:16:57 +10:00

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auxiliary

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built-in-proc-macro-scope.rs

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built-in-proc-macro-scope.stdout

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coerce-pointee-bounds-issue-127647.rs

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derive-no-std.rs

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derive-partialord-correctness.rs

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deriving-all-codegen.rs

Remove the From derive macro from prelude

2025-08-18 13:12:19 +02:00

deriving-all-codegen.stdout

Remove the From derive macro from prelude

2025-08-18 13:12:19 +02:00

deriving-associated-types.rs

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deriving-bounds.rs

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deriving-clone-array.rs

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deriving-clone-enum.rs

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deriving-clone-generic-enum.rs

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deriving-clone-generic-struct.rs

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deriving-clone-generic-tuple-struct.rs

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deriving-clone-struct.rs

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deriving-clone-tuple-struct.rs

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deriving-cmp-generic-enum.rs

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deriving-cmp-generic-struct-enum.rs

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deriving-cmp-generic-struct.rs

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deriving-cmp-generic-tuple-struct.rs

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deriving-cmp-shortcircuit.rs

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deriving-coerce-pointee-expanded.rs

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deriving-coerce-pointee-expanded.stdout

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deriving-coerce-pointee-neg.rs

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deriving-coerce-pointee-neg.stderr

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deriving-coerce-pointee.rs

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deriving-copyclone.rs

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deriving-default-box.rs

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deriving-default-enum.rs

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deriving-enum-single-variant.rs

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deriving-eq-ord-boxed-slice.rs

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deriving-from-wrong-target.rs

Avoid using () in derive(From) output.

2025-08-19 18:16:57 +10:00

deriving-from-wrong-target.stderr

Avoid using () in derive(From) output.

2025-08-19 18:16:57 +10:00

deriving-from.rs

Remove the From derive macro from prelude

2025-08-18 13:12:19 +02:00

deriving-hash.rs

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deriving-in-fn.rs

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deriving-in-macro.rs

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deriving-meta-multiple.rs

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deriving-meta.rs

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deriving-self-lifetime-totalord-totaleq.rs

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deriving-show-2.rs

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deriving-show.rs

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deriving-via-extension-c-enum.rs

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deriving-via-extension-enum.rs

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deriving-via-extension-hash-enum.rs

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deriving-via-extension-hash-struct.rs

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deriving-via-extension-struct-empty.rs

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deriving-via-extension-struct-like-enum-variant.rs

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deriving-via-extension-struct-tuple.rs

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deriving-via-extension-struct.rs

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deriving-via-extension-type-params.rs

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deriving-with-helper.rs

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deriving-with-repr-packed.rs

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do-not-suggest-calling-fn-in-derive-macro.rs

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do-not-suggest-calling-fn-in-derive-macro.stderr

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issue-3935.rs

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issue-6341.rs

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issue-15689-1.rs

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issue-15689-2.rs

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issue-18738.rs

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issue-19358.rs

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issue-58319.rs

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issue-89188-gat-hrtb.rs

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issue-103157.rs

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issue-103157.stderr

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multiple-defaults.rs

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multiple-defaults.stderr

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proc-macro-attribute-mixing.rs

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proc-macro-attribute-mixing.stdout

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