[swiftc] Add test case for crash triggered in swift::TypeChecker::checkGenericParamList(…) #2996
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…ckGenericParamList(swift::ArchetypeBuilder*, swift::GenericParamList*, swift::GenericSignature*, bool, swift::GenericTypeResolver*) Stack trace: ``` 4 swift 0x0000000000ed89bd swift::TypeChecker::checkGenericParamList(swift::ArchetypeBuilder*, swift::GenericParamList*, swift::GenericSignature*, bool, swift::GenericTypeResolver*) + 93 6 swift 0x0000000000ed90de swift::TypeChecker::validateGenericFuncSignature(swift::AbstractFunctionDecl*) + 94 9 swift 0x0000000000e9b741 swift::TypeChecker::validateDecl(swift::ValueDecl*, bool) + 1089 10 swift 0x00000000010f587c swift::DeclContext::lookupQualified(swift::Type, swift::DeclName, swift::NLOptions, swift::LazyResolver*, llvm::SmallVectorImpl<swift::ValueDecl*>&) const + 2652 11 swift 0x0000000000edcf37 swift::TypeChecker::lookupMemberType(swift::DeclContext*, swift::Type, swift::Identifier, swift::OptionSet<swift::NameLookupFlags, unsigned int>) + 295 13 swift 0x0000000000f0d47e swift::TypeChecker::resolveIdentifierType(swift::DeclContext*, swift::IdentTypeRepr*, swift::OptionSet<swift::TypeResolutionFlags, unsigned int>, bool, swift::GenericTypeResolver*, llvm::function_ref<bool (swift::TypeCheckRequest)>*) + 158 15 swift 0x0000000000f0e554 swift::TypeChecker::resolveType(swift::TypeRepr*, swift::DeclContext*, swift::OptionSet<swift::TypeResolutionFlags, unsigned int>, swift::GenericTypeResolver*, llvm::function_ref<bool (swift::TypeCheckRequest)>*) + 164 16 swift 0x0000000000f0d370 swift::TypeChecker::validateType(swift::TypeLoc&, swift::DeclContext*, swift::OptionSet<swift::TypeResolutionFlags, unsigned int>, swift::GenericTypeResolver*, llvm::function_ref<bool (swift::TypeCheckRequest)>*) + 192 17 swift 0x0000000000e9953a swift::TypeChecker::checkInheritanceClause(swift::Decl*, swift::GenericTypeResolver*) + 5370 18 swift 0x0000000000e9b50f swift::TypeChecker::validateDecl(swift::ValueDecl*, bool) + 527 21 swift 0x0000000000ea0c86 swift::TypeChecker::typeCheckDecl(swift::Decl*, bool) + 150 24 swift 0x0000000000f060aa swift::TypeChecker::typeCheckFunctionBodyUntil(swift::FuncDecl*, swift::SourceLoc) + 346 25 swift 0x0000000000f05f0e swift::TypeChecker::typeCheckAbstractFunctionBodyUntil(swift::AbstractFunctionDecl*, swift::SourceLoc) + 46 26 swift 0x0000000000f06ad3 swift::TypeChecker::typeCheckAbstractFunctionBody(swift::AbstractFunctionDecl*) + 179 28 swift 0x0000000000ec3761 swift::performTypeChecking(swift::SourceFile&, swift::TopLevelContext&, swift::OptionSet<swift::TypeCheckingFlags, unsigned int>, unsigned int, unsigned int) + 1281 29 swift 0x0000000000c58169 swift::CompilerInstance::performSema() + 3289 31 swift 0x00000000007d7499 swift::performFrontend(llvm::ArrayRef<char const*>, char const*, void*, swift::FrontendObserver*) + 2857 32 swift 0x00000000007a34b8 main + 2872 Stack dump: 0. Program arguments: /path/to/swift/bin/swift -frontend -c -primary-file validation-test/compiler_crashers/28312-swift-typechecker-checkgenericparamlist.swift -target x86_64-unknown-linux-gnu -disable-objc-interop -module-name main -o /tmp/28312-swift-typechecker-checkgenericparamlist-dcf2e2.o 1. While type-checking getter for w at validation-test/compiler_crashers/28312-swift-typechecker-checkgenericparamlist.swift:10:6 2. While type-checking 'c' at validation-test/compiler_crashers/28312-swift-typechecker-checkgenericparamlist.swift:10:7 3. While resolving type A.b at [validation-test/compiler_crashers/28312-swift-typechecker-checkgenericparamlist.swift:10:15 - line:10:17] RangeText="A.b" 4. While type-checking 'b' at validation-test/compiler_crashers/28312-swift-typechecker-checkgenericparamlist.swift:10:27 <unknown>:0: error: unable to execute command: Segmentation fault <unknown>:0: error: compile command failed due to signal (use -v to see invocation) ```
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What's in this pull request?
Crash case with stack trace:
Resolved bug number: –
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