79925ac394
warning: field `0` is never read
--> test_suite/tests/regression/issue2846.rs:8:45
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8 | pub struct S(#[serde(with = $with)] i32);
| - field in this struct ^^^
...
12 | declare_in_macro!("with");
| ------------------------- in this macro invocation
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= help: consider removing this field
= note: `#[warn(dead_code)]` on by default
= note: this warning originates in the macro `declare_in_macro` (in Nightly builds, run with -Z macro-backtrace for more info)
28 lines
504 B
Rust
28 lines
504 B
Rust
#![allow(clippy::trivially_copy_pass_by_ref)]
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use serde_derive::Deserialize;
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macro_rules! declare_in_macro {
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($with:literal) => {
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#[derive(Deserialize)]
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pub struct S(
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#[serde(with = $with)]
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#[allow(dead_code)]
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i32,
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);
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};
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}
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declare_in_macro!("with");
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mod with {
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use serde::Deserializer;
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pub fn deserialize<'de, D>(_: D) -> Result<i32, D::Error>
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where
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D: Deserializer<'de>,
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{
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unimplemented!()
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}
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}
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