WeakList implementation segfaults compiler
Originator: | rnewman | ||
Number: | rdar://24540588 | Date Originated: | 2016-02-06 |
Status: | Open | Resolved: | |
Product: | Developer Tools | Product Version: | |
Classification: | Reproducible: |
Summary: A WeakList implementation that compiles and works with earlier versions of Xcode causes a compiler crash in Xcode 7.3 beta (7D129n). The only change for the new beta is to rename anyGenerator to AnyGenerator to match language changes. Steps to Reproduce: Load the attached file in a playground. Expected Results: Compile completes. Actual Results: Compiler segfaults with this stack: 0 swift 0x000000010a4f05ab llvm::sys::PrintStackTrace(llvm::raw_ostream&) + 43 1 swift 0x000000010a4efa46 llvm::sys::RunSignalHandlers() + 70 2 swift 0x000000010a4f0bd3 SignalHandler(int) + 243 3 libsystem_platform.dylib 0x00007fff99fb0eaa _sigtramp + 26 4 libsystem_platform.dylib 0xe1723eb0ffffffff _sigtramp + 1711599983 5 swift 0x00000001083b1a4e (anonymous namespace)::WitnessTableBuilder::emitReturnOfCheckedLoadFromCache(swift::irgen::IRGenFunction&, swift::irgen::Address, llvm::Value*, llvm::function_ref<llvm::Value* ()>) + 1358 6 swift 0x00000001083b0c4e swift::SILWitnessVisitor<(anonymous namespace)::WitnessTableBuilder>::visitProtocolDecl(swift::ProtocolDecl*) + 1534 7 swift 0x00000001083ab495 swift::irgen::IRGenModule::emitSILWitnessTable(swift::SILWitnessTable*) + 293 8 swift 0x00000001083415fd swift::irgen::IRGenModuleDispatcher::emitGlobalTopLevel() + 621 9 swift 0x00000001083c9e63 performIRGeneration(swift::IRGenOptions&, swift::ModuleDecl*, swift::SILModule*, llvm::StringRef, llvm::LLVMContext&, swift::SourceFile*, unsigned int) + 1059 10 swift 0x00000001083ca310 swift::performIRGeneration(swift::IRGenOptions&, swift::SourceFile&, swift::SILModule*, llvm::StringRef, llvm::LLVMContext&, unsigned int) + 64 11 swift 0x00000001082b51ea performCompile(swift::CompilerInstance&, swift::CompilerInvocation&, llvm::ArrayRef<char const*>, int&) + 15098 12 swift 0x00000001082b0b62 frontend_main(llvm::ArrayRef<char const*>, char const*, void*) + 2722 13 swift 0x00000001082ac8db main + 3051 14 libdyld.dylib 0x00007fff950005ad start + 1 15 libdyld.dylib 0x0000000000000079 start + 1795160781 Version: Xcode 7.3 beta (7D129n), OS 10.11.3. Notes: Configuration: N/A Attachments: 'WeakList.swift' was successfully uploaded. File is almost exactly: https://github.com/mozilla/firefox-ios/blob/master/Utils/WeakList.swift
Comments
Please note: Reports posted here will not necessarily be seen by Apple. All problems should be submitted at bugreport.apple.com before they are posted here. Please only post information for Radars that you have filed yourself, and please do not include Apple confidential information in your posts. Thank you!