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[SR-1473] Please support something like #warning for Swift code #44082

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swift-ci opened this issue May 10, 2016 · 3 comments
Closed

[SR-1473] Please support something like #warning for Swift code #44082

swift-ci opened this issue May 10, 2016 · 3 comments
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@harlanhaskins
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compiler The Swift compiler in itself feature A feature request or implementation improvement

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@swift-ci
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Previous ID SR-1473
Radar None
Original Reporter jalkut@red-sweater.com (JIRA User)
Type Improvement
Status Closed
Resolution Done
Additional Detail from JIRA
Votes 2
Component/s Compiler
Labels Improvement, LanguageFeatureRequest
Assignee @harlanhaskins
Priority Medium

md5: 75f6703a6f7bdb515a54173e2be87cb1

Issue Description:

I'm in the habit of peppering my source code with #warning tags as part of my workflow. I'm sure I'm not the only one. See:

http://indiestack.com/2016/05/artificial-swift-warnings/

Is this something that we might see in Swift someday? Is there a philosophical objection to "false" warnings, or has this issue not been discussed?
@belkadan
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I think it's mostly something that would get a lot of bikeshedding in the Swift Evolution Process. It would need some careful specification of how it interacts with #if.

@amomchilov
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To keep the prepreprossor minimal, this could be implemented as a function, e.g. `warning("Warning text here")`. It would be nice to have similar support for `error`, too.

@harlanhaskins
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This was added in Swift 4.2. https://github.com/apple/swift-evolution/blob/master/proposals/0196-diagnostic-directives.md

@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
This issue was closed.
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compiler The Swift compiler in itself feature A feature request or implementation improvement
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@belkadan @harlanhaskins @amomchilov @swift-ci