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[SR-13639] Code after return, inconsistent diagnostics and behavior #56075

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jepers opened this issue Oct 1, 2020 · 1 comment
Open

[SR-13639] Code after return, inconsistent diagnostics and behavior #56075

jepers opened this issue Oct 1, 2020 · 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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@jepers
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jepers commented Oct 1, 2020

Previous ID SR-13639
Radar rdar://problem/69845495
Original Reporter @jepers
Type Bug
Additional Detail from JIRA
Votes 0
Component/s Compiler
Labels Bug
Assignee guitardog (JIRA)
Priority Medium

md5: 93178b7c4343d2f9fee8e7bba810aecd

Issue Description:

The following program runs and prints a series of numbers, so either the warning is misleading or the behavior is not as intended.

func foo() -> Int {

  return _E.bar

  struct _E { // WARNING: Code after 'return' will never be executed
    private static var count = 0
    static var bar: Int {
      count += (Bool.random() ? foo() : 1)
      return count
    }
  }
}

for _ in 0 ..< 7 { print(foo()) }

Related thread (with more similar examples):
https://forums.swift.org/t/should-this-misleading-warning-be-here/40678
@typesanitizer
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@swift-ci create

@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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@typesanitizer @jepers