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error: expected a pattern, found an expression
--> $DIR/issue-24375.rs:6:9
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LL | tmp[0] => {}
| ^^^^^^ not a pattern
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= note: arbitrary expressions are not allowed in patterns: <https://doc.rust-lang.org/book/ch19-00-patterns.html>
help: consider moving the expression to a match arm guard
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LL - tmp[0] => {}
LL + val if val == tmp[0] => {}
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help: consider extracting the expression into a `const`
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LL + const VAL: /* Type */ = tmp[0];
LL ~ match z {
LL ~ VAL => {}
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error: aborting due to 1 previous error
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