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Diffstat (limited to 'src/test/ui/pattern/usefulness/issue-31561.stderr')
-rw-r--r-- | src/test/ui/pattern/usefulness/issue-31561.stderr | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/src/test/ui/pattern/usefulness/issue-31561.stderr b/src/test/ui/pattern/usefulness/issue-31561.stderr new file mode 100644 index 000000000..9da6b5eee --- /dev/null +++ b/src/test/ui/pattern/usefulness/issue-31561.stderr @@ -0,0 +1,31 @@ +error[E0005]: refutable pattern in local binding: `Bar` and `Baz` not covered + --> $DIR/issue-31561.rs:8:9 + | +LL | let Thing::Foo(y) = Thing::Foo(1); + | ^^^^^^^^^^^^^ patterns `Bar` and `Baz` 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: `Thing` defined here + --> $DIR/issue-31561.rs:3:5 + | +LL | enum Thing { + | ----- +LL | Foo(u8), +LL | Bar, + | ^^^ not covered +LL | Baz + | ^^^ not covered + = note: the matched value is of type `Thing` +help: you might want to use `if let` to ignore the variants that aren't matched + | +LL | let y = if let Thing::Foo(y) = Thing::Foo(1) { y } else { todo!() }; + | ++++++++++ ++++++++++++++++++++++ +help: alternatively, on nightly, you might want to use `#![feature(let_else)]` to handle the variants that aren't matched + | +LL | let Thing::Foo(y) = Thing::Foo(1) else { todo!() }; + | ++++++++++++++++ + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0005`. |