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[SR-8434] Don't require a return in functions that take an uninhabited type #50957

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mdiep opened this issue Aug 1, 2018 · 2 comments
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[SR-8434] Don't require a return in functions that take an uninhabited type #50957

mdiep opened this issue Aug 1, 2018 · 2 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

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@mdiep
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mdiep commented Aug 1, 2018

Previous ID SR-8434
Radar None
Original Reporter @mdiep
Type Bug
Status Resolved
Resolution Done
Environment

Swift 4.2

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

md5: b06324695f5e01392b38d15797b30528

relates to:

  • SR-8766 Allow returning self from instance procedure on an uninhabited type whose return type is that uninhabited type

Issue Description:

func f(_: Never) -> Int {}

1:26: error: missing return in a function expected to return 'Int'
func f(_: Never) -> Int {}

That shouldn't be an error. This function can never be called, so no return is actually needed.
@mdiep
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mdiep commented Aug 1, 2018

Swift should also warn if there is code in such a function (SR-8435).

@theblixguy
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PR: #20528

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

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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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@mdiep @theblixguy