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Add dyn keyword to E0373 examples #137963

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Mar 5, 2025
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Add dyn keyword to E0373 examples #137963

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4 changes: 2 additions & 2 deletions compiler/rustc_error_codes/src/error_codes/E0373.md
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Original file line number Diff line number Diff line change
Expand Up @@ -3,7 +3,7 @@ A captured variable in a closure may not live long enough.
Erroneous code example:

```compile_fail,E0373
fn foo() -> Box<Fn(u32) -> u32> {
fn foo() -> Box<dyn Fn(u32) -> u32> {
let x = 0u32;
Box::new(|y| x + y)
}
Expand Down Expand Up @@ -42,7 +42,7 @@ This approach moves (or copies, where possible) data into the closure, rather
than taking references to it. For example:

```
fn foo() -> Box<Fn(u32) -> u32> {
fn foo() -> Box<dyn Fn(u32) -> u32> {
let x = 0u32;
Box::new(move |y| x + y)
}
Expand Down
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