Jonas Schievink f02f7b05b2 Rollup merge of #81503 - henryboisdequin:fix-const-fn-arr-err-msg, r=estebank ... Suggest to create a new `const` item if the `fn` in the array is a `const fn` Fixes #73734. If the `fn` in the array repeat expression is a `const fn`, suggest creating a new `const` item. On nightly, suggest creating an inline `const` block. This PR also removes the `suggest_const_in_array_repeat_expressions` as it is no longer necessary. Example: ```rust fn main() { // Should not compile but hint to create a new const item (stable) or an inline const block (nightly) let strings: [String; 5] = [String::new(); 5]; println!("{:?}", strings); } ``` Gives this error: ``` error[E0277]: the trait bound `std::string::String: std::marker::Copy` is not satisfied --> $DIR/const-fn-in-vec.rs:3:32 | 2 | let strings: [String; 5] = [String::new(); 5]; | ^^^^^^^^^^^^^^^^^^ the trait `std::marker::Copy` is not implemented for `String` | = note: the `Copy` trait is required because the repeated element will be copied ``` With this change, this is the error message: ``` error[E0277]: the trait bound `String: Copy` is not satisfied --> $DIR/const-fn-in-vec.rs:3:32 | LL | let strings: [String; 5] = [String::new(); 5]; | ^^^^^^^^^^^^^^^^^^ the trait `Copy` is not implemented for `String` | = help: moving the function call to a new `const` item will resolve the error ```		2021-02-15 16:06:47 +01:00
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src	Rollup merge of #81503 - henryboisdequin:fix-const-fn-arr-err-msg, r=estebank	2021-02-15 16:06:47 +01:00
Cargo.toml	bumped smallvec deps	2021-02-14 18:03:11 +03:00