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Error[E0658] is broken #72611
Description
fn apply_to_3<F>(f: F) -> i32 where
F: Fn<i32, Output=i32> {
f(3)
}doesn't compile, it's normal but, the error message isn't right:
error[E0658]: the precise format of `Fn`-family traits' type parameters is subject to change
--> src/main.rs:12:8
|
12 | F: Fn<i32, Output=i32> {
| ^^ help: use parenthetical notation instead: `Fni32 -> i32`
|
= note: see issue #29625 <https://github.com/rust-lang/rust/issues/29625> for more information
Fni32 -> i32 is missing parentheses. And E0658 is not an error about Fn-family traits.
Activity
Rollup merge of rust-lang#72668 - awoimbee:give-fn-parenthetical-nota…