os-rust/tests/ui/suggestions/const-pat-non-exaustive-let-new-var.rs
Esteban Küber ff2f7a7a83 Point at const definition when used instead of a binding in a let statement
After:

```
error[E0005]: refutable pattern in local binding
  --> $DIR/bad-pattern.rs:19:13
   |
LL |     const PAT: u32 = 0;
   |     -------------- missing patterns are not covered because `PAT` is interpreted as a constant pattern, not a new variable
...
LL |         let PAT = v1;
   |             ^^^
   |             |
   |             pattern `1_u32..=u32::MAX` not covered
   |             help: introduce a variable instead: `PAT_var`
   |
   = note: `let` bindings require an "irrefutable pattern", like a `struct` or an `enum` with only one variant
   = note: for more information, visit https://doc.rust-lang.org/book/ch18-02-refutability.html
   = note: the matched value is of type `u32`
```

Before:

```
error[E0005]: refutable pattern in local binding
  --> $DIR/bad-pattern.rs:19:13
   |
LL |         let PAT = v1;
   |             ^^^
   |             |
   |             pattern `1_u32..=u32::MAX` not covered
   |             missing patterns are not covered because `PAT` is interpreted as a constant pattern, not a new variable
   |             help: introduce a variable instead: `PAT_var`
   |
   = note: `let` bindings require an "irrefutable pattern", like a `struct` or an `enum` with only one variant
   = note: for more information, visit https://doc.rust-lang.org/book/ch18-02-refutability.html
   = note: the matched value is of type `u32`
```
2024-11-17 23:39:59 +00:00

10 lines
354 B
Rust

fn main() {
let A = 3;
//~^ ERROR refutable pattern in local binding
//~| patterns `i32::MIN..=1_i32` and `3_i32..=i32::MAX` not covered
//~| HELP introduce a variable instead
//~| SUGGESTION A_var
const A: i32 = 2;
//~^ missing patterns are not covered because `A` is interpreted as a constant pattern, not a new variable
}