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[SR-7176] Mutating getter will crash #49724

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swift-ci opened this issue Mar 12, 2018 · 4 comments
Closed

[SR-7176] Mutating getter will crash #49724

swift-ci opened this issue Mar 12, 2018 · 4 comments
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bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler in itself crash Bug: A crash, i.e., an abnormal termination of software

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@swift-ci
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Previous ID SR-7176
Radar None
Original Reporter linqingmo (JIRA User)
Type Bug
Status Resolved
Resolution Done
Environment

Swift Development Snapshot 2018-03-11(a)

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

md5: 3b123b3e113888b19e3a3925e188d4e0

Issue Description:

struct Test {
    private var _count = 0
    
    var count: Int {
        mutating get {
            counting()
            return _count
        }
    }
    
    private mutating func counting() {
        _count += 1
    }
}

Assertion failed: ((!selfParam.isIndirectMutating() || (baseFormalType->isAnyClassReferenceType() && isNonClassProtocolMember(accessor.getDecl()))) && "passing unmaterialized r-value as inout argument"), function prepareAccessorObjectBaseArg, file /Users/buildnode/jenkins/workspace/oss-swift-package-osx/swift/lib/SILGen/SILGenApply.cpp, line 4966.
@belkadan
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Mutating getters remain way untested. Thanks!

@slavapestov
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linqingmo (JIRA User) I cannot reproduce the issue. Is the test case incomplete? Were you using the 2018-03-11 snapshot on Linux? What flags did you pass to the compiler?

@slavapestov
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Never mind, declaring the struct as public reproduces it. The problem occurs on latest master too.

@slavapestov
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#15249

@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
@AnthonyLatsis AnthonyLatsis added the crash Bug: A crash, i.e., an abnormal termination of software label Dec 12, 2022
This issue was closed.
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Labels
bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler in itself crash Bug: A crash, i.e., an abnormal termination of software
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