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0760290387
Augment the TypeVarRefCollector such that it picks up any type variables present in the result type for a closure DeclContext when visiting a ReturnStmt. This ensures we correctly handle if/switch expressions that contain `return` statements. rdar://114402042
33 lines
991 B
Swift
33 lines
991 B
Swift
// RUN: %target-typecheck-verify-swift
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// rdar://114402042 - Make sure we connect the SingleValueStmtExpr to the outer
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// closure's return type.
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func foo<T>(_: () -> T) {}
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func bar<T>(_ x: T) {}
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func test() {
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foo {
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bar(if true { return } else { return })
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// expected-error@-1 {{'if' may only be used as expression in return, throw, or as the source of an assignment}}
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// expected-error@-2 2{{cannot 'return' in 'if' when used as expression}}
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}
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foo {
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bar(if true { { return } } else { { return } })
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// expected-error@-1 {{'if' may only be used as expression in return, throw, or as the source of an assignment}}
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}
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}
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func baz() -> String? {
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nil
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}
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var x: Int? = {
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print( // expected-error {{cannot convert value of type '()' to closure result type 'Int?'}}
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// expected-note@-1 {{to match this opening '('}}
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switch baz() {
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case ""?:
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return nil
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default:
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return nil
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}
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}() // expected-error {{expected ')' in expression list}}
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