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[SR-7567] Crash lowering ill-scoped use of variable #50109

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CodaFi opened this issue Apr 29, 2018 · 4 comments
Closed

[SR-7567] Crash lowering ill-scoped use of variable #50109

CodaFi opened this issue Apr 29, 2018 · 4 comments
Labels
bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler in itself crash Bug: A crash, i.e., an abnormal termination of software

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@CodaFi
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CodaFi commented Apr 29, 2018

Previous ID SR-7567
Radar rdar://problem/39868144
Original Reporter @CodaFi
Type Bug
Status Resolved
Resolution Done

Attachment: Download

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

md5: 8852c7d129a3e92941fb022464355ba8

is duplicated by:

  • SR-7591 Compiler segfault 11: Cyclic declaration with a guard statement

relates to:

  • SR-7591 Compiler segfault 11: Cyclic declaration with a guard statement

Issue Description:

This code should diagnose `outer` as being ill-scoped but instead lets it through to SILGen where it blows up

func foo() {
  guard let outer = (5 as? Optional<Int>) else {
    guard true else {
      fatalError("Lowering referencing uncached type? \(outer)")
    }
  }
}
@belkadan
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belkadan commented May 1, 2018

Uh, wow. @DougGregor, do we have one of these already?

@DougGregor
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@swift-ci create

@DougGregor
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Wow indeed. I haven't seen this before.

@DougGregor
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#16388

@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
@AnthonyLatsis AnthonyLatsis added the crash Bug: A crash, i.e., an abnormal termination of software label Dec 12, 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 crash Bug: A crash, i.e., an abnormal termination of software
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@belkadan @DougGregor @CodaFi @AnthonyLatsis