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[SR-3839] Ternary operator in convenience initialiser call missing one or more parameters yields an unhelpful error #46424

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hamishknight opened this issue Feb 2, 2017 · 1 comment
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[SR-3839] Ternary operator in convenience initialiser call missing one or more parameters yields an unhelpful error #46424

hamishknight opened this issue Feb 2, 2017 · 1 comment
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@hamishknight
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bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler in itself diagnostics QoI Bug: Diagnostics Quality of Implementation type checker Area → compiler: Semantic analysis

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@hamishknight
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Previous ID SR-3839
Radar None
Original Reporter @hamishknight
Type Bug
Status Closed
Resolution Done
Environment

Apple Swift version 3.1 (swiftlang-802.0.27.2 clang-802.0.27.2)
Target: x86_64-apple-macosx10.9

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

md5: a02517eeb7ed44ab1b67487fd7179aa5

Issue Description:

class Foo {
    convenience init(a: Int, b: Int) {}
}

let f = Foo(a: true ? 1 : 0) // error: 'Int1' is not convertible to 'Bool'

The expected error would be "Missing argument for parameter 'b' in call".
@xedin
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xedin commented Aug 22, 2017

Diagnostic has been improved in Swift 4:

Cannot invoke initializer for type 'Foo' with an argument list of type '(a: Int)'

And if you remove `convenience` following error is emitted:

Missing argument for parameter 'b' in call

@hamishknight Please verify using the latest nightly build of Swift compiler.

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

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bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler in itself diagnostics QoI Bug: Diagnostics Quality of Implementation type checker Area → compiler: Semantic analysis
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@xedin @hamishknight