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error: top-level or-patterns are not allowed in function parameters
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--> $DIR/fn-param-wrap-parens.rs:13:9
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LL | fn fun1(A | B: E) {}
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| ^^^^^
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help: wrap the pattern in parentheses
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LL | fn fun1((A | B): E) {}
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| + +
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error: aborting due to 1 previous error
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