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[SR-14295] super.init allowed in static method #56654

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AnthonyLatsis opened this issue Mar 3, 2021 · 2 comments
Open

[SR-14295] super.init allowed in static method #56654

AnthonyLatsis opened this issue Mar 3, 2021 · 2 comments
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 SILGen Area → compiler: The SIL generation stage type checker Area → compiler: Semantic analysis

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@AnthonyLatsis
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AnthonyLatsis commented Mar 3, 2021 •
edited

Previous ID SR-14295
Radar rdar://problem/75032461
Original Reporter @AnthonyLatsis
Type Bug
Environment

Version 12.4 (12D4e)

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

md5: 754ea7ec0485c98fcb67ae8d8a3aabd5

Issue Description:

super.init() here is dispatched statically but still creates an object of the Self type, allowing one to access uninitialized memory.

class A {
  required init() {}
}
class B: A {
  static func staticMethod() {
    let foo = super.init() // OK
    print(foo is B) // true
  }
}
@typesanitizer
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@swift-ci create

@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
@AnthonyLatsis
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This now crashes during SIL generation.

@AnthonyLatsis AnthonyLatsis added the type checker Area → compiler: Semantic analysis label Jun 11, 2022
@AnthonyLatsis AnthonyLatsis added crash Bug: A crash, i.e., an abnormal termination of software SILGen Area → compiler: The SIL generation stage labels Nov 6, 2022
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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 SILGen Area → compiler: The SIL generation stage type checker Area → compiler: Semantic analysis
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@typesanitizer @AnthonyLatsis