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Diffstat (limited to 'tests/ui/pattern/usefulness/refutable-pattern-errors.stderr')
| -rw-r--r-- | tests/ui/pattern/usefulness/refutable-pattern-errors.stderr | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/tests/ui/pattern/usefulness/refutable-pattern-errors.stderr b/tests/ui/pattern/usefulness/refutable-pattern-errors.stderr new file mode 100644 index 000000000..c518de477 --- /dev/null +++ b/tests/ui/pattern/usefulness/refutable-pattern-errors.stderr @@ -0,0 +1,25 @@ +error[E0005]: refutable pattern in function argument + --> $DIR/refutable-pattern-errors.rs:1:9 + | +LL | fn func((1, (Some(1), 2..=3)): (isize, (Option<isize>, isize))) { } + | ^^^^^^^^^^^^^^^^^^^^^ pattern `(_, _)` not covered + | + = note: the matched value is of type `(isize, (Option<isize>, isize))` + +error[E0005]: refutable pattern in local binding + --> $DIR/refutable-pattern-errors.rs:6:9 + | +LL | let (1, (Some(1), 2..=3)) = (1, (None, 2)); + | ^^^^^^^^^^^^^^^^^^^^^ patterns `(i32::MIN..=0_i32, _)` and `(2_i32..=i32::MAX, _)` 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: the matched value is of type `(i32, (Option<i32>, i32))` +help: you might want to use `if let` to ignore the variants that aren't matched + | +LL | if let (1, (Some(1), 2..=3)) = (1, (None, 2)) { todo!() } + | ++ ~~~~~~~~~~~ + +error: aborting due to 2 previous errors + +For more information about this error, try `rustc --explain E0005`. |