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c6dd3ad839
Instead of diagnosing in CSApply, let's create a fix and diagnose in the solver instead. Additionally, make sure we assign ErrorTypes to any VarDecls bound by the invalid pattern, which fixes a crash. rdar://110638279
13 lines
525 B
Swift
13 lines
525 B
Swift
// RUN: %target-typecheck-verify-swift
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enum E: Error { case e }
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// rdar://106598067 – Make sure we don't crash.
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// FIXME: We ought to have a tailored diagnostic to change to 'as' instead of 'as?'
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let fn = {
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do {} catch let x as? E {}
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// expected-error@-1 {{pattern variable binding cannot appear in an expression}}
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// expected-error@-2 {{expression pattern of type 'E?' cannot match values of type 'any Error'}}
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// expected-warning@-3 {{'catch' block is unreachable because no errors are thrown in 'do' block}}
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}
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