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[SR-12704] Crash when dumping the AST of a typealias in a #if condition #55148

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swift-ci opened this issue Apr 29, 2020 · 5 comments
Closed

[SR-12704] Crash when dumping the AST of a typealias in a #if condition #55148

swift-ci opened this issue Apr 29, 2020 · 5 comments
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@typesanitizer
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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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@swift-ci
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Previous ID SR-12704
Radar rdar://problem/62894031
Original Reporter vinivendra (JIRA User)
Type Bug
Status Closed
Resolution Done

Attachment: Download

Environment

macOS 10.15.4, Swift 5.2.

Additional Detail from JIRA
Votes 0
Component/s Compiler
Labels Bug, CompilerCrash
Assignee @typesanitizer
Priority Medium

md5: 9f466a30ef09bbdc3e794ee3586789fc

Issue Description:

If we create a file containing:

#if !MY_FLAG

typealias MyString = String

#endif

Then try to dump its AST with:

xcrun swiftc test.swift -dump-ast -D MY_FLAG

The compiler crashes. The error message (and stack dump etc) are in the attached file.
@theblixguy
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cc davidungar (JIRA User)

@beccadax
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beccadax commented May 5, 2020

@swift-ci create

@typesanitizer
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Seems to work ok on master @ ad00350, can you try reproducing with a toolchain from a recent development snapshot? https://swift.org/download/#snapshots

@swift-ci
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swift-ci commented May 9, 2020

Comment by Vinicius Vendramini (JIRA)

Yeah, it seems to be working fine on the development snapshot.

@typesanitizer
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Marking as Resolved since this has been fixed on master.

@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
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@typesanitizer typesanitizer

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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@beccadax @theblixguy @typesanitizer @swift-ci @AnthonyLatsis