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[SR-14499] Compiler crash #56854

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swift-ci opened this issue Apr 16, 2021 · 4 comments
Closed

[SR-14499] Compiler crash #56854

swift-ci opened this issue Apr 16, 2021 · 4 comments
Labels
bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler in itself type checker Area → compiler: Semantic analysis

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@swift-ci
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Previous ID SR-14499
Radar None
Original Reporter Alexis.S (JIRA User)
Type Bug
Status Resolved
Resolution Done

Attachment: Download

Environment

macOS 11.2.3

Apple Swift version 5.4 (swiftlang-1205.0.26.4 clang-1205.0.19.54)

Reproducible with switftc, and in Xcode project or playground

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

md5: 39d3331bfd0bb3e40979cc133002d640

Issue Description:

The compiler crashes (abort trap 6) when uncommenting one of the crash block of comments and commenting the pass one.

struct A { }
struct B { }
 
func reproduce() -> [(A, B)] {
[
// Pass 
//(true, A.init(), B.init()),

// Crash
//(true, .init(), B.init()),

// Crash
//(true, A.init(), .init()),

// Crash
//(true, .init(), .init()),
]
.filter(\.0)
.prefix(3)
.map { ($0.1, $0.2) }
}
@LucianoPAlmeida
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Couldn't reproduce this on a near main build, can you please verify on the current main snapshot from https://swift.org/download/ ?

cc @xedin

@swift-ci
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Comment by Alexis Schultz (JIRA)

I can't download a full toolchain rn but I reproduce the issue with the newly released Xcode 12.5 rc

@LucianoPAlmeida
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By the crash logs, looks like the issue may be resolved by #36427 (@xedin can confirm it) so it would indeed not be available on 12.5

@LucianoPAlmeida
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Already fixed on main and regression tests added =]

@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
This issue was closed.
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Labels
bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler in itself type checker Area → compiler: Semantic analysis
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@LucianoPAlmeida @swift-ci