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[SR-13868] bogus local function called from guard block leads to "failed to produce diagnostic" error #56266

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mayoff opened this issue Nov 17, 2020 · 1 comment
Open

[SR-13868] bogus local function called from guard block leads to "failed to produce diagnostic" error #56266

mayoff opened this issue Nov 17, 2020 · 1 comment
Labels
bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler in itself diagnostics QoI Bug: Diagnostics Quality of Implementation failed to produce diagnostic Bug → internal error: Failed to produce diagnostic for expression type checker Area → compiler: Semantic analysis

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@mayoff
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mayoff commented Nov 17, 2020

Previous ID SR-13868
Radar rdar://problem/71549774
Original Reporter @mayoff
Type Bug
Environment

Xcode 12.3 beta 1

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

md5: de111a449780bf881bf5c1445a4acfa1

Issue Description:

func makePool(x: Any?) -> Any? {
    func reportError() {
        _ = thing
    }


    guard let y = x else {
        reportError()
        return nil
    }


    let thing = y
    return thing
} 



:; xcrun swiftc -version
Apple Swift version 5.3.2 (swiftlang-1200.0.44.1 clang-1200.0.32.28)
Target: x86_64-apple-darwin19.6.0
:; xcrun swiftc -c /tmp/t.swift 
/tmp/t.swift:11:17: error: failed to produce diagnostic for expression; please file a bug report
    let thing = y
                ^
@typesanitizer
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@swift-ci create

@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
@AnthonyLatsis AnthonyLatsis added diagnostics QoI Bug: Diagnostics Quality of Implementation failed to produce diagnostic Bug → internal error: Failed to produce diagnostic for expression type checker Area → compiler: Semantic analysis labels Dec 22, 2022
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Labels
bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler in itself diagnostics QoI Bug: Diagnostics Quality of Implementation failed to produce diagnostic Bug → internal error: Failed to produce diagnostic for expression type checker Area → compiler: Semantic analysis
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@mayoff @typesanitizer @AnthonyLatsis