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[SR-8321] 4.2 regression with inout-to-pointer case expressions #50849

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hamishknight opened this issue Jul 19, 2018 · 1 comment
Closed

[SR-8321] 4.2 regression with inout-to-pointer case expressions #50849

hamishknight opened this issue Jul 19, 2018 · 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 regression swift 4.2 type checker Area → compiler: Semantic analysis

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@hamishknight
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Previous ID SR-8321
Radar None
Original Reporter @hamishknight
Type Bug
Status Closed
Resolution Invalid
Environment

Apple Swift version 4.1.2 (swiftlang-902.0.54 clang-902.0.39.2)
Target: x86_64-apple-darwin17.6.0

Apple Swift version 4.2-dev (LLVM da1c9a3ae4, Clang a0e59b03e6, Swift e325e32)
Target: x86_64-apple-darwin17.6.0

Additional Detail from JIRA
Votes 0
Component/s Compiler
Labels Bug, 4.2Regression, TypeChecker
Assignee None
Priority Medium

md5: 2fec481b892614e8c266431c0c02b81a

Issue Description:

The following compiles in Swift 4.1 and on master, but doesn't compile in the latest 4.2 snapshot:

var x = 0
func foo(_ ptr: UnsafeMutableRawPointer) {
  switch ptr {
  case &x: // error in 4.2: Use of extraneous '&'
    break
  default:
    break
  }
}
@hamishknight
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Huh, weird it's now working in the latest 4.2 snaphot.... never mind then!

@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
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Labels
bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler in itself regression swift 4.2 type checker Area → compiler: Semantic analysis
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@hamishknight @AnthonyLatsis