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[SR-6988] We sometimes select type checking solutions involving forcing optionals rather than injecting into optionals #49536

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rudkx opened this issue Feb 12, 2018 · 1 comment
Open

[SR-6988] We sometimes select type checking solutions involving forcing optionals rather than injecting into optionals #49536

rudkx opened this issue Feb 12, 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 type checker Area → compiler: Semantic analysis

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@rudkx
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rudkx commented Feb 12, 2018

Previous ID SR-6988
Radar rdar://problem/37475971
Original Reporter @rudkx
Type Bug
Additional Detail from JIRA
Votes 0
Component/s Compiler
Labels Bug, TypeChecker
Assignee None
Priority Medium

md5: c71fe7102ca4a79518d188deac717bcf

Issue Description:

Almost certainly a regression due to my recent changes for IUOs.

I removed the solver score keeping track of forced optionals thinking that the favored disjunction choice would deal with that, but that's not the case if we have overloads like this:

func f(x: Int?, y: Int?) {}
func f(x: Int, y: Int) {}

var x: Int! = nil
var y: Int = 2

f(x: x, y: y)
@rudkx
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rudkx commented Feb 12, 2018

@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 type checker Area → compiler: Semantic analysis
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