René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Memory corruption take 2","articleBody":"I still see the following crash if I re-enable the `Examples/Testing` tests.\n\nhttps://github.com/swiftwasm/JavaScriptKit/blob/84243a4c66d47e17c540bbdc17ef49f191840a07/Plugins/PackageToJS/Tests/ExampleTests.swift#L249-L250\n\n```\n\n   RuntimeError: memory access out of bounds\n       at CounterPackageTests.xctest.dlmalloc (wasm://wasm/CounterPackageTests.xctest-0f40d596:wasm-function[89702]:0x115e7de)\n       at CounterPackageTests.xctest.malloc (wasm://wasm/CounterPackageTests.xctest-0f40d596:wasm-function[89701]:0x115e22a)\n       at CounterPackageTests.xctest.swift::Demangle::__runtime::Demangler::demangleBoundGenerics(swift::Demangle::__runtime::Vector\u003cswift::Demangle::__runtime::Node*\u003e\u0026, swift::Demangle::__runtime::Node*\u0026) (wasm://wasm/CounterPackageTests.xctest-0f40d596:wasm-function[28248]:0x522adc)\n       at CounterPackageTests.xctest.swift::Demangle::__runtime::Demangler::demangleBoundGenericType() (wasm://wasm/CounterPackageTests.xctest-0f40d596:wasm-function[28200]:0x512379)\n       at CounterPackageTests.xctest.swift::Demangle::__runtime::Demangler::demangleOperator() (wasm://wasm/CounterPackageTests.xctest-0f40d596:wasm-function[28174]:0x50e156)\n       at CounterPackageTests.xctest.swift::Demangle::__runtime::Demangler::demangleType(__swift::__runtime::llvm::StringRef, std::__2::function\u003cswift::Demangle::__runtime::Node* (swift::Demangle::__runtime::SymbolicReferenceKind, swift::Demangle::__runtime::Directness, int, void const*)\u003e) (wasm://wasm/CounterP\nackageTests.xctest-0f40d596:wasm-function[28172]:0x50db25)\n       at CounterPackageTests.xctest.swift_getTypeByMangledName (wasm://wasm/CounterPackageTests.xctest-0f40d596:wasm-function[27912]:0x4ee2ad)\n       at CounterPackageTests.xctest.(anonymous namespace)::DecodedMetadataBuilder::resolveOpaqueType(swift::Demangle::__runtime::Node*, __swift::__runtime::llvm::ArrayRef\u003c__swift::__runtime::llvm::ArrayRef\u003cswift::MetadataPackOrValue\u003e\u003e, unsigned int) (wasm://wasm/CounterPackageTests.xctest-0f40d596:wasm-functio\nn[27992]:0x500764)\n       at CounterPackageTests.xctest.swift::Demangle::__runtime::TypeDecoder\u003c(anonymous namespace)::DecodedMetadataBuilder\u003e::decodeMangledType(swift::Demangle::__runtime::Node*, unsigned int, bool) (wasm://wasm/CounterPackageTests.xctest-0f40d596:wasm-function[27925]:0x4f3cfe)\n       at CounterPackageTests.xctest.swift::Demangle::__runtime::TypeDecoder\u003c(anonymous namespace)::DecodedMetadataBuilder\u003e::decodeGenericArgs(swift::Demangle::__runtime::Node*, unsigned int, __swift::__runtime::llvm::SmallVectorImpl\u003cswift::MetadataPackOrValue\u003e\u0026) (wasm://wasm/CounterPackageTests.xctest-0f40d596\n:wasm-function[27971]:0x4fc426)\n```\n\nToolchain version: DEVELOPMENT-SNAPSHOT-2025-10-02-a","author":{"url":"https://github.com/kateinoigakukun","@type":"Person","name":"kateinoigakukun"},"datePublished":"2025-10-24T08:14:25.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/461/JavaScriptKit/issues/461"}