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[SR-12271] @discardableResult not working for static function with function return type #54699

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swift-ci opened this issue Feb 26, 2020 · 4 comments
Closed

[SR-12271] @discardableResult not working for static function with function return type #54699

swift-ci opened this issue Feb 26, 2020 · 4 comments
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@theblixguy
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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-12271
Radar None
Original Reporter fumoboy007 (JIRA User)
Type Bug
Status Closed
Resolution Done

Attachment: Download

Environment

Apple Swift version 5.1.3 (swiftlang-1100.0.282.1 clang-1100.0.33.15)
Target: x86_64-apple-darwin19.3.0

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

md5: 2b293c108978b3a0712411c5b80192dc

is duplicated by:

  • SR-7297 Discarding a function from a discardableResult method causes a compiler error

Issue Description:

The following code does not compile:

class Foo {
   @discardableResult
   static func bar() -> () -> Void {
      return {}
   }
}

Foo.bar()

The error:

error: expression resolves to an unused function
Foo.bar()
~~~~^~~~~
@theblixguy
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Fix: #30077

@theblixguy
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Fixed on master. Please verify using the next development snapshot and close this ticket.

@swift-ci
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Comment by Darren Mo (JIRA)

Verified. Thanks!

1 similar comment
@swift-ci
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Comment by Darren Mo (JIRA)

Verified. Thanks!

@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
This issue was closed.
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@theblixguy theblixguy

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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@theblixguy @swift-ci