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[SR-11992] Unused variables in lazy properties should generate a warning #54426

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swift-ci opened this issue Jan 6, 2020 · 2 comments
Open

[SR-11992] Unused variables in lazy properties should generate a warning #54426

swift-ci opened this issue Jan 6, 2020 · 2 comments
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bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler in itself parser Area → compiler: The legacy C++ parser

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@swift-ci
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swift-ci commented Jan 6, 2020

Previous ID SR-11992
Radar rdar://problem/58455463
Original Reporter XmasRights (JIRA User)
Type Bug
Additional Detail from JIRA
Votes 2
Component/s Compiler
Labels Bug, Parser
Assignee maustinstar (JIRA)
Priority Medium

md5: f3be1ac0399e649a845bbd0002637704

relates to:

  • SR-13821 Variables never mutated in lazy properties should generate a warning

Issue Description:

In the code below, let x = 42 appropriately gives us an 'x' was never used warning. However the let z = 42 does not.

class Foo {
    lazy var y: Int = {
        let z = 42
        return 12
    }()

    func run() {
        let x = 42 // Initialization of immutable value 'x' was never used...
    }
}

Unused variables in lazy properties should produce the unused variable warning.
@beccadax
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beccadax commented Jan 9, 2020

@swift-ci create

@swift-ci
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swift-ci commented Nov 6, 2020

Comment by Michael Verges (JIRA)

See my PR: #34617

@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 parser Area → compiler: The legacy C++ parser
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