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[SR-14299] swift demangle stuck with no feedback given incorrect input #56658

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LucianoPAlmeida opened this issue Mar 4, 2021 · 3 comments
Closed

[SR-14299] swift demangle stuck with no feedback given incorrect input #56658

LucianoPAlmeida opened this issue Mar 4, 2021 · 3 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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@LucianoPAlmeida
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Previous ID SR-14299
Radar None
Original Reporter @LucianoPAlmeida
Type Bug
Status Closed
Resolution Invalid
Environment

Xcode 12.4

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

md5: 2d6e8f31767578e88d997fe63c5200fa

Issue Description:

Trying to use swift-demangle with the $ before the mangled name

swift demangle $ss30_copySequenceToContiguousArrayys0dE0Vy7ElementQzGxSTRzlFs07LazyMapB0VySaySiGSiG_Tg5

And it simply got stuck without any message or execute anything.
Using it like bellow it works as expected

swift demangle ss30_copySequenceToContiguousArrayys0dE0Vy7ElementQzGxSTRzlFs07LazyMapB0VySaySiGSiG_Tg5
$ss30_copySequenceToContiguousArrayys0dE0Vy7ElementQzGxSTRzlFs07LazyMapB0VySaySiGSiG_Tg5 ---> generic specialization <Swift.LazyMapSequence<[Swift.Int], Swift.Int>> of Swift._copySequenceToContiguousArray<A where A: Swift.Sequence>(A) -> Swift.ContiguousArray<A.Element>

So I wonder if this is a bug or what should happen in that case? I would expect an error message or even better if it just works ignoring the initial $.

Let me know if this makes sense or am I missing something =]
@LucianoPAlmeida
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cc theindigamer (JIRA User)

@typesanitizer
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It depends on what shell you're using. The string needs to be quoted; otherwise if it expands to empty, swift demangle will try to read from stdin.

@LucianoPAlmeida
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Ah ok sorry, my mistake. Thank you for the clarification =]

@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
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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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@typesanitizer @LucianoPAlmeida