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[SR-7889] Expression too complex Regression #50424

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an0 mannequin opened this issue Jun 6, 2018 · 4 comments
Open

[SR-7889] Expression too complex Regression #50424

an0 mannequin opened this issue Jun 6, 2018 · 4 comments
Labels
access control Feature → modifiers: Access control and access levels 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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@an0
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Mannequin

an0 mannequin commented Jun 6, 2018

Previous ID SR-7889
Radar rdar://problem/40875282
Original Reporter @an0
Type Bug
Environment

Xcode 10 beta 1

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

md5: 47f8458bb14de431fbe827ed1cc7dcfb

Issue Description:

This is a regression. It was OK in Swift 4.1.2 but now is too complex in Swift 4.2:

import SceneKit

let m = SCNMatrix4()
let ss = [m.m11, m.m12, m.m13, m.m14, m.m21, m.m22, m.m23, m.m24, m.m31, m.m32, m.m33, m.m34, m.m41, m.m42, m.m43, m.m44].map { $0.description }
let columnWidths = [max(ss[0].count, ss[4].count, ss[8].count, ss[12].count),
                    max(ss[1].count, ss[5].count, ss[9].count, ss[13].count),
                    max(ss[2].count, ss[6].count, ss[10].count, ss[14].count),
                    max(ss[3].count, ss[7].count, ss[11].count, ss[15].count)]
@belkadan
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belkadan commented Jun 6, 2018

cc @rudkx, @xedin

@xedin
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xedin commented Jun 6, 2018

@an0 As a workaround you can use contextual type for [Int] on columnWidths to make it compile again.

@rudkx
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rudkx commented Jun 7, 2018

@swift-ci create

@an0
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an0 mannequin commented Jun 7, 2018

@xedin Thanks for the workaround.

@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
@AnthonyLatsis AnthonyLatsis added regression swift 4.2 access control Feature → modifiers: Access control and access levels and removed 4.2 regression labels Nov 19, 2022
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access control Feature → modifiers: Access control and access levels 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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@xedin @rudkx @belkadan @AnthonyLatsis