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[SR-11214] Swift compiler incorrectly warns or errors when a try is captured by a throwing @autoclosure parameter to a function which does not itself throw. #53613

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tkrajacic opened this issue Jul 26, 2019 · 2 comments
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[SR-11214] Swift compiler incorrectly warns or errors when a try is captured by a throwing @autoclosure parameter to a function which does not itself throw. #53613

tkrajacic opened this issue Jul 26, 2019 · 2 comments
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bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler in itself

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@tkrajacic
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Previous ID SR-11214
Radar rdar://problem/53578737
Original Reporter @tkrajacic
Type Bug
Status Resolved
Resolution Duplicate

Attachment: Download

Environment

Xcode 11b4

Additional Detail from JIRA
Votes 0
Component/s Compiler
Labels Bug
Assignee None
Priority Medium

md5: 334b4a0425d8766e9fca105ae7568f5a

duplicates:

Issue Description:

The sample project shows that there is an incorrect diagnostic

'catch' block is unreachable because no errors are thrown in 'do' block

when in reality removing the do-catch will result in a compile error.
@gwynne
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gwynne commented Jul 26, 2019

@swift-ci create

@theblixguy
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Example that does not involve XCTest:

func foo(_: @autoclosure () throws -> Void) {}
func bar() throws {}

func test() {
  do {
    foo(try bar())
  } catch { // 'catch' block is unreachable because no errors are thrown in 'do' block
    print(error)
  }
}

@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
This issue was closed.
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bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler in itself
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@tkrajacic @gwynne @theblixguy