[Vm-dev] [OpenSmalltalk/opensmalltalk-vm] Reproducible segfault with Squeak (Issue #601)
Eliot Miranda
notifications at github.com
Sat Oct 30 18:25:53 UTC 2021
Cool, well found!
_,,,^..^,,,_ (phone)
> On Oct 30, 2021, at 7:33 AM, Max Leske ***@***.***> wrote:
>
>
> Found it! I was accidentally writing a class as the method class literal into a compiled method. This is usually an association (or ClassBinding). This explains the segfault upon super send.
>
> The reason this only showed up in trunk is that i had a correct Environment>>associationAt:ifAbsent: but not for #bindingOf:ifAbsent:, which, in trunk, is the new message send in Class>>binding.
>
> I'm closing this issue. Here's an MWE in case you want to do something with the segfault:
>
> | class method |
> Object subclass: #Foo
> instanceVariableNames: 'env'
> classVariableNames: ''
> poolDictionaries: ''
> category: 'Bar'.
>
> class := Smalltalk at: #Foo.
> class compile: 'printString super prinstString'.
>
> method := (Smalltalk at: #Foo) compiledMethodAt: #printString.
> method
> literalAt: method numLiterals
> put: class.
>
> class new printString
> —
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