rust/tests/ui/parser/issues/issue-24375.stderr
Esteban Küber 7f5548fa8b On function and method calls in patterns, link to the book
```
error: expected a pattern, found an expression
 --> f889.rs:3:13
  |
3 |     let (x, y.drop()) = (1, 2); //~ ERROR
  |             ^^^^^^^^ not a pattern
  |
  = note: arbitrary expressions are not allowed in patterns: <https://doc.rust-lang.org/book/ch18-00-patterns.html>

error[E0532]: expected a pattern, found a function call
 --> f889.rs:2:13
  |
2 |     let (x, drop(y)) = (1, 2); //~ ERROR
  |             ^^^^ not a tuple struct or tuple variant
  |
  = note: function calls are not allowed in patterns: <https://doc.rust-lang.org/book/ch18-00-patterns.html>
```

Fix #97200.
2024-10-06 01:44:59 +00:00

25 lines
766 B
Plaintext

error: expected a pattern, found an expression
--> $DIR/issue-24375.rs:6:9
|
LL | tmp[0] => {}
| ^^^^^^ not a pattern
|
= note: arbitrary expressions are not allowed in patterns: <https://doc.rust-lang.org/book/ch18-00-patterns.html>
help: consider moving the expression to a match arm guard
|
LL | val if val == tmp[0] => {}
| ~~~ ++++++++++++++++
help: consider extracting the expression into a `const`
|
LL + const VAL: /* Type */ = tmp[0];
LL ~ match z {
LL ~ VAL => {}
|
help: consider wrapping the expression in an inline `const` (requires `#![feature(inline_const_pat)]`)
|
LL | const { tmp[0] } => {}
| +++++++ +
error: aborting due to 1 previous error