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When simplifying a keypath constraint with a function type binding, single-parameter functions have the parameter type and the return type matched against the keypath root and value; whereas multiple-parameter functions cause an ambiguous failure (in `simplifyKeyPathConstraint`). Resolves rdar://problem/57930643
11 lines
397 B
Swift
11 lines
397 B
Swift
// RUN: %target-swift-frontend -typecheck -verify -primary-file %s
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// rdar://problem/57930643
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struct School {
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var name: String
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}
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func testKeyPathClosureLiteralError() -> [School] {
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let slist = [School(name:"AHS"), School(name:"BHS")]
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return slist.sorted(by: \School.name) // expected-error {{cannot convert key path into a multi-argument function type '(School, School) throws -> Bool'}}
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}
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