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[SR-11279] -profile-generate flag generates incorrect "Will never be executed" warning when there is No statement to execute #53680

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swift-ci opened this issue Aug 9, 2019 · 1 comment
Open

[SR-11279] -profile-generate flag generates incorrect "Will never be executed" warning when there is No statement to execute #53680

swift-ci opened this issue Aug 9, 2019 · 1 comment
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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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@swift-ci
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swift-ci commented Aug 9, 2019

Previous ID SR-11279
Radar None
Original Reporter eliottparis (JIRA User)
Type Bug
Environment

  • macOS 10.14.5 (18F203)

  • Xcode 10.2.1 (10E1001)

  • Swift 5.0

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

md5: 840a10e1487f521ee390d4d5cbb2e4dc

Issue Description:

Compiling a block of code that does not contain any statement in it generates an incorrect "Will never be executed" warning when the "-profile-generate" flag is set.

Example:

if false {}   // warning: Will never be executed           
else {
  return true
}

(Above example does compile without warning if the "-profile-generate" flag is not set)
@belkadan
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I'd argue it should always emit the warning, but it should definitely be consistent! cc ravikandhadai (JIRA User)

@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
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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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@belkadan @swift-ci