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[SR-10040] Cross module subclass of generic superclass is missing symbol #52443

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tjw opened this issue Mar 4, 2019 · 2 comments
Closed

[SR-10040] Cross module subclass of generic superclass is missing symbol #52443

tjw opened this issue Mar 4, 2019 · 2 comments
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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 regression swift 5.0

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@tjw
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tjw commented Mar 4, 2019

Previous ID SR-10040
Radar rdar://problem/48702093
Original Reporter @tjw
Type Bug
Status Resolved
Resolution Duplicate

Attachment: Download

Environment

Xcode 10.2b3
macOS 10.14.3

This worked correctly in Xcode 10.1, and works in 10.2b3 when using the Debug configuration.

Additional Detail from JIRA
Votes 0
Component/s Compiler
Labels Bug, 5.0Regression, CompilerCrash
Assignee None
Priority Medium

md5: c715869a4083bf59734ce37e3eff85c7

duplicates:

  • SR-9939 Undefined symbols linker error when compiling with Swift 5.0 in release mode

Issue Description:

Subclassing a generic superclass that is in a different module produces a linker error:

Undefined symbols for architecture x86_64:
  "CrossModuleGenericInit.Superclass.__allocating_init() -> CrossModuleGenericInit.Superclass<A>", referenced from:
      type metadata for DependentFramework.Subclass in Subclass.o

  • Open the attached project

  • Select the "CrossModuleGenericInit" scheme and ensure it is using the Release configuration

  • Build

  • A linker error is emitted
@AnnaZaks
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AnnaZaks mannequin commented Mar 8, 2019

@jckarter, Does this look familiar?

@jckarter
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jckarter commented Mar 8, 2019

Sounds like https://bugs.swift.org/browse/SR-9939.

@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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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 regression swift 5.0
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@tjw @jckarter @AnthonyLatsis