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Diffstat (limited to '')
-rw-r--r-- | src/test/ui/recursion/recursive-types-are-not-uninhabited.stderr | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/src/test/ui/recursion/recursive-types-are-not-uninhabited.stderr b/src/test/ui/recursion/recursive-types-are-not-uninhabited.stderr new file mode 100644 index 000000000..acbd0d059 --- /dev/null +++ b/src/test/ui/recursion/recursive-types-are-not-uninhabited.stderr @@ -0,0 +1,29 @@ +error[E0005]: refutable pattern in local binding: `Err(_)` not covered + --> $DIR/recursive-types-are-not-uninhabited.rs:6:9 + | +LL | let Ok(x) = res; + | ^^^^^ pattern `Err(_)` not covered + | + = 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: `Result<u32, &R>` defined here + --> $SRC_DIR/core/src/result.rs:LL:COL + | +LL | pub enum Result<T, E> { + | --------------------- +... +LL | Err(#[stable(feature = "rust1", since = "1.0.0")] E), + | ^^^ not covered + = note: the matched value is of type `Result<u32, &R>` +help: you might want to use `if let` to ignore the variant that isn't matched + | +LL | let x = if let Ok(x) = res { x } else { todo!() }; + | ++++++++++ ++++++++++++++++++++++ +help: alternatively, on nightly, you might want to use `#![feature(let_else)]` to handle the variant that isn't matched + | +LL | let Ok(x) = res else { todo!() }; + | ++++++++++++++++ + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0005`. |