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A-diagnosticsArea: Messages for errors, warnings, and lintsArea: Messages for errors, warnings, and lintsT-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.
Description
Code
use serde::Deserialize; // 1.0.152
#[derive(Deserialize)]
struct Nested {
float: f64,
}
#[derive(Deserialize)]
#[serde(tag = "tag")]
enum InternallyTagged {
Flatten {
#[serde(flatten)]
nested: Nested,
string: &'static str,
},
}
Current output
Compiling playground v0.0.1 (/playground)
error[E0261]: use of undeclared lifetime name `'de`
--> src/lib.rs:8:10
|
8 | #[derive(Deserialize)]
| ^^^^^^^^^^^
| |
| undeclared lifetime
| lifetime `'de` is missing in item created through this procedural macro
|
= note: for more information on higher-ranked polymorphism, visit https://doc.rust-lang.org/nomicon/hrtb.html
= note: this error originates in the derive macro `Deserialize` (in Nightly builds, run with -Z macro-backtrace for more info)
help: consider making the bound lifetime-generic with a new `'de` lifetime
|
8 | #[derive(for<'de> Deserialize)]
| ++++++++
help: consider making the bound lifetime-generic with a new `'de` lifetime
|
8 | #[derive(for<'de> Deserialize)]
| ++++++++
help: consider introducing lifetime `'de` here
|
8 | #[derive(Deserialize<'de>)]
| +++++
For more information about this error, try `rustc --explain E0261`.
error: could not compile `playground` due to previous error
Desired output
No response
Rationale and extra context
The compiler suggest incorrect corrections to add lifetimes where they cannot appear. The reproduction of this bug depends on the serde bug serde-rs/serde#2371, which should not be fixed.
Other cases
No response
Anything else?
No response
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A-diagnosticsArea: Messages for errors, warnings, and lintsArea: Messages for errors, warnings, and lintsT-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.