1> import Foundation
  2> import SwiftUI
  3> import Combine
  4> @Published var password = "" 
  5. password = "abcd"
password: String = <computed property>
error: Couldn't lookup symbols:
  __lldb_expr_8.(_password in _5548754462C78259F55DA6F04588F7AF) : Combine.Published<Swift.String>

  4> @Published var password = ""
password: String = <computed property>
error: Couldn't lookup symbols:
  __lldb_expr_10.(_password in _A53E14A5BE650E96AADE0122C9B49D7E) : Combine.Published<Swift.String>

  4> password="abcd"
Execution interrupted. Enter code to recover and continue.
Enter LLDB commands to investigate (type :help for assistance.)
Process 8435 stopped
* thread #&#8203;1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS (code=1, address=0x0)
    frame #&#8203;0: 0x0000000000000000
error: memory read failed for 0x0
Target 0: (repl_swift) stopped.

% ./swift
***  You are running Swift's integrated REPL,  ***
***  intended for compiler and stdlib          ***
***  development and testing purposes only.    ***
***  The full REPL is built as part of LLDB.   ***
***  Type ':help' for assistance.              ***
(swift) import Foundation
(swift) import SwiftUI
(swift) import Combine
(swift) @Published var password = "" 
Combine.Published:3:16: warning: property wrapper's `value` property should be renamed to 'wrappedValue'; use of 'value' is deprecated
    public var value: Value { get set }
               ^
Combine.Published:10:16: warning: property wrapper's `delegateValue` property should be renamed to 'projectedValue'; use of 'delegateValue' is deprecated
    public var delegateValue: Published<Value>.Publisher { mutating get }
               ^
Global is external, but doesn't have external or weak linkage!
[24 x i8]* @"$s6REPL_39_password33_1A982C302490160D9F7355F575D42EA4LL7Combine9PublishedVySSGvp"
<unknown>:0: error: fatal error encountered during compilation; please file a bug report with your project and the crash log
<unknown>:0: note: Broken module found, compilation aborted!
Stack dump:
0.  Program arguments: /Users/local/swift/build/Ninja-ReleaseAssert+stdlib-Release/swift-macosx-x86_64/bin/swift -frontend -repl -enable-objc-interop -sdk /Applications/Xcode8.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.15.sdk -color-diagnostics -module-name REPL 
1.  Swift version 5.1-dev (LLVM 8d110eebee, Swift e4989cd749)
2.  while processing REPL source:
import Foundation
import SwiftUI
import Combine
@Published var password = "" 
0  swift                    0x0000000108c7ebc5 llvm::sys::PrintStackTrace(llvm::raw_ostream&) + 37
1  swift                    0x0000000108c7dc08 llvm::sys::RunSignalHandlers() + 248
2  swift                    0x0000000108c7f1b8 SignalHandler(int) + 264
3  libsystem_platform.dylib 0x00007fff67fc3b1d _sigtramp + 29
4  libsystem_platform.dylib 0x000000011bd0f9a4 _sigtramp + 3017064100
5  libsystem_c.dylib        0x00007fff67e99a5c abort + 120
6  swift                    0x00000001050f16c7 swift::performFrontend(llvm::ArrayRef<char const*>, char const*, void*, swift::FrontendObserver*)::$_1::__invoke(void*, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, bool) + 519
7  swift                    0x0000000108bf500b llvm::report_fatal_error(llvm::Twine const&, bool) + 251
8  swift                    0x0000000108bf4f0b llvm::report_fatal_error(char const*, bool) + 43
9  swift                    0x0000000108ba77a2 (anonymous namespace)::VerifierLegacyPass::doFinalization(llvm::Module&) + 178
10 swift                    0x0000000108b33356 llvm::FPPassManager::doFinalization(llvm::Module&) + 54
11 swift                    0x0000000108b32ae5 llvm::legacy::FunctionPassManagerImpl::doFinalization(llvm::Module&) + 85
12 swift                    0x00000001052390f8 swift::performLLVMOptimizations(swift::IRGenOptions&, llvm::Module*, llvm::TargetMachine*) + 1304
13 swift                    0x0000000105239cf0 swift::performLLVM(swift::IRGenOptions&, swift::DiagnosticEngine*, llvm::sys::SmartMutex<false>*, llvm::GlobalVariable*, llvm::Module*, llvm::TargetMachine*, swift::version::Version const&, llvm::StringRef, swift::UnifiedStatsReporter*) + 1856
14 swift                    0x000000010523d10d performIRGeneration(swift::IRGenOptions&, swift::ModuleDecl*, std::__1::unique_ptr<swift::SILModule, std::__1::default_delete<swift::SILModule> >, llvm::StringRef, swift::PrimarySpecificPaths const&, llvm::LLVMContext&, swift::SourceFile*, llvm::GlobalVariable**) + 2349
15 swift                    0x000000010523b5b0 swift::performIRGeneration(swift::IRGenOptions&, swift::ModuleDecl*, std::__1::unique_ptr<swift::SILModule, std::__1::default_delete<swift::SILModule> >, llvm::StringRef, swift::PrimarySpecificPaths const&, llvm::LLVMContext&, llvm::ArrayRef<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > >, llvm::GlobalVariable**) + 960
16 swift                    0x0000000105105dcb REPLEnvironment::executeSwiftSource(llvm::StringRef, std::__1::vector<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, std::__1::allocator<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > > > const&) + 827
17 swift                    0x0000000105101353 swift::runREPL(swift::CompilerInstance&, std::__1::vector<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, std::__1::allocator<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > > > const&, bool) + 1795
18 swift                    0x00000001050ee723 performCompile(swift::CompilerInstance&, swift::CompilerInvocation&, llvm::ArrayRef<char const*>, int&, swift::FrontendObserver*, swift::UnifiedStatsReporter*) + 3075
19 swift                    0x00000001050ecbe2 swift::performFrontend(llvm::ArrayRef<char const*>, char const*, void*, swift::FrontendObserver*) + 3026
20 swift                    0x0000000105094ce9 main + 729
21 libdyld.dylib            0x00007fff67dc3319 start + 1
22 libdyld.dylib            0x0000000000000009 start + 2552483057
zsh: abort      ./swift

% ./lldb --repl
Welcome to Swift version 5.1-dev (LLVM 200186e28b, Swift bd21fb4e65).
Type :help for assistance.
1> import SwiftUI
2> import Combine
3> @Published var password = ""
error: repl.swift:3:1: error: property wrappers are not yet supported in top-level code
@Published var password = ""
^