bar.swift

#!swift
import Foundation

import Glibc

let operation = NSBlockOperation(block: {
  for _ in 1...5 {
    print("Hello")
  }
})

swift-async.log

fatal error: init(block:) is not yet implemented: file Foundation/NSObjCRuntime.swift, line 64
0  swift            0x0000000002f15268 llvm::sys::PrintStackTrace(llvm::raw_ostream&) + 40
1  swift            0x0000000002f13a36 llvm::sys::RunSignalHandlers() + 54
2  swift            0x0000000002f15d9a
3  libpthread.so.0  0x00007f7052d59340
4  libswiftCore.so  0x00007f705082229c _TTSf4s_s_s_n___TFs16_assertionFailedFTVs12StaticStringSSS_Su_T_ + 124
5  libFoundation.so 0x00007f704dddb000
6  libFoundation.so 0x00007f704dddc09c
7  libFoundation.so 0x00007f704dddc0d9 _TFC10Foundation16NSBlockOperationCfT5blockFT_T__S0_ + 57
8  libFoundation.so 0x00007f7053beb069 _TFC10Foundation16NSBlockOperationCfT5blockFT_T__S0_ + 98627529
9  swift            0x0000000000ce9284 llvm::MCJIT::runFunction(llvm::Function*, llvm::ArrayRef<llvm::GenericValue>) + 996
10 swift            0x0000000000cec80f llvm::ExecutionEngine::runFunctionAsMain(llvm::Function*, std::vector<std::string, std::allocator<std::string> > const&, char const* const*) + 1215
11 swift            0x0000000000b4ab5a swift::RunImmediately(swift::CompilerInstance&, std::vector<std::string, std::allocator<std::string> > const&, swift::IRGenOptions&, swift::SILOptions const&) + 2074
12 swift            0x0000000000762b69
13 swift            0x000000000075ef3b frontend_main(llvm::ArrayRef<char const*>, char const*, void*) + 2395
14 swift            0x0000000000759bb1 main + 2705
15 libc.so.6        0x00007f7051f6cec5 __libc_start_main + 245
16 swift            0x000000000075902d
Stack dump:
0.	Program arguments: /home/vagrant/swift-2.2-SNAPSHOT-2015-12-01-b-ubuntu14.04/usr/bin/swift -frontend -interpret bar.swift -target x86_64-unknown-linux-gnu -disable-objc-interop -module-name bar