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[SR-12705] Wrong diagnostic when method called with wrong argument labels on result of operator #55149

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belkadan opened this issue Apr 30, 2020 · 2 comments
Closed

[SR-12705] Wrong diagnostic when method called with wrong argument labels on result of operator #55149

belkadan opened this issue Apr 30, 2020 · 2 comments
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@belkadan
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bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler in itself type checker Area → compiler: Semantic analysis

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@belkadan
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Previous ID SR-12705
Radar rdar://problem/62894033
Original Reporter @belkadan
Type Bug
Status Resolved
Resolution Done
Environment

Apple Swift version 5.2.2 (swiftlang-1103.0.32.6 clang-1103.0.32.51)

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

md5: 87e74907a6ae795bb6224a8366804a56

Issue Description:

func bindToInt(
  _ base: UnsafeMutableRawPointer,
  at offset: Int
) -> UnsafeMutablePointer<Int> {
  let result = (base + offset).bindMemory(to: Int.self, count: 1)
  return result
}

<stdin>:5:17: error: cannot convert value of type 'UnsafeMutableRawPointer' to expected argument type 'Int'
  let result = (base + offset).bindMemory(to: Int.self, count: 1)
                ^
<stdin>:5:32: error: value of type 'Int' has no member 'bindMemory'
  let result = (base + offset).bindMemory(to: Int.self, count: 1)
               ~~~~~~~~~~~~~~~ ^~~~~~~~~~

The correct error is shown if the offsetting is extracted into a temporary: "incorrect argument label in call (have 'to:count:', expected 'to:capacity:')"
@beccadax
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beccadax commented May 5, 2020

@swift-ci create

@xedin
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xedin commented Apr 2, 2021

Looks like this has been fixed on main branch:

 error: incorrect argument label in call (have 'to:count:', expected 'to:capacity:')
  let result = (base + offset).bindMemory(to: Int.self, count: 1)
                                         ^              ~~~~~
                                                        capacity

@belkadan Please use the latest main branch snapshot to verify and close.

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

Labels
bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler in itself type checker Area → compiler: Semantic analysis
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@xedin @belkadan @beccadax