[HEADS UP] Realm swift 3.0 support is blocked due to Xcode 8 beta 3 swift compiler bug

[liuxuan30]

So I use this thread to let everyone knows Realm swift 3.0 support had issues and blocks our swift 3.0 branch.

Due to swift 3.0 bug: https://bugs.swift.org/browse/SR-1779 (realm/realm-swift#3746), we are having issues to let Realm support swift 3.0:

If you tried to convert RLMArray and RLMResults in RealmChartUtils.swift to conform Sequence protocol you would see seg fault 11:

0  swift                    0x000000010d97128b llvm::sys::PrintStackTrace(llvm::raw_ostream&) + 43
1  swift                    0x000000010d970576 llvm::sys::RunSignalHandlers() + 70
2  swift                    0x000000010d9718df SignalHandler(int) + 287
3  libsystem_platform.dylib 0x00007fff8f87252a _sigtramp + 26
4  libsystem_malloc.dylib   0x00007fff8a6fd5a1 malloc_zone_malloc + 71
5  swift                    0x000000010b43f059 swift::irgen::IRGenFunction::emitTypeMetadataRef(swift::CanType) + 73
6  swift                    0x000000010b46c6ed bool llvm::function_ref<bool (swift::Type)>::callback_fn<swift::Type::visit(llvm::function_ref<void (swift::Type)>) const::'lambda'(swift::Type)>(long, swift::Type) + 13
7  swift                    0x000000010bbe0cee swift::Type::findIf(llvm::function_ref<bool (swift::Type)>) const::Walker::walkToTypePre(swift::Type) + 14
8  swift                    0x000000010bbe8b00 swift::TypeVisitor<(anonymous namespace)::Traversal, bool>::visit(swift::Type) + 3728
9  swift                    0x000000010bbe7c26 swift::Type::walk(swift::TypeWalker&) const + 54
10 swift                    0x000000010bbd8804 swift::Type::findIf(llvm::function_ref<bool (swift::Type)>) const + 36
11 swift                    0x000000010b4b964e swift::SILVisitor<(anonymous namespace)::IRGenSILFunction, void>::visit(swift::ValueBase*) + 49758
12 swift                    0x000000010b4a999d swift::irgen::IRGenModule::emitSILFunction(swift::SILFunction*) + 7933
13 swift                    0x000000010b3ff8c4 swift::irgen::IRGenerator::emitGlobalTopLevel() + 596
14 swift                    0x000000010b48deff performIRGeneration(swift::IRGenOptions&, swift::ModuleDecl*, swift::SILModule*, llvm::StringRef, llvm::LLVMContext&, swift::SourceFile*, unsigned int) + 1135
15 swift                    0x000000010b48e336 swift::performIRGeneration(swift::IRGenOptions&, swift::SourceFile&, swift::SILModule*, llvm::StringRef, llvm::LLVMContext&, unsigned int) + 70
16 swift                    0x000000010b3ba67c performCompile(swift::CompilerInstance&, swift::CompilerInvocation&, llvm::ArrayRef<char const*>, int&, swift::FrontendObserver*) + 13980
17 swift                    0x000000010b3b60d2 swift::performFrontend(llvm::ArrayRef<char const*>, char const*, void*, swift::FrontendObserver*) + 2898
18 swift                    0x000000010b384154 main + 2884
19 libdyld.dylib            0x00007fff86a0d5ad start + 1

[ahknight]

Related to #1119 IMO. These shouldn't be fundamentally joined.

[pmairoldi]

Fixed Already