[swift-corelibs-dev] [XCTest] Cannot build using XCode
Brian Gesiak
modocache at gmail.com
Tue Jul 5 19:35:54 CDT 2016
Looks like our continuous integration server works fine:
https://github.com/apple/swift-corelibs-xctest/pull/132
Madhu, are you sure you're using the latest master branch commit on each of
the apple/swift repositories? Specifically, you should pull down the latest
changes on: swift, swift-llvm, swift-clang, swift-corelibs-foundation,
swift-corelibs-xctest, swift-llbuild, and swift-package-manager. The CI
server appears to be fine, so if you're seeing compilation errors, I think
you may be using code that is out of date.
- Brian Gesiak
On Tue, Jul 5, 2016 at 10:36 AM, Brian Croom <brian.s.croom at gmail.com>
wrote:
> Hmm, it does look like XCTest needs some work done to get things working
> with the latest Swift 3 changes made in the stdlib and corelibs-foundation.
> I don't have access to a development environment to investigate further,
> but as far as I can tell, this wouldn't build on Linux either. Has there
> been any indication of these issues from CI, I wonder?
>
> On Friday, 1 July 2016, Madhu Samuel <madhusamuel at gmail.com> wrote:
>
>> I just found more error details in the log. You can find it below. Hope
>> this helps.
>>
>> Error 1
>> --------------------------------------
>>
>> CompileSwift normal x86_64
>> /Users/madhusamuel/dev/swift/swift-corelibs-xctest/Sources/XCTest/Public/XCTestMain.swift
>> cd /Users/madhusamuel/dev/swift/swift-corelibs-xctest
>> ...
>> ...
>> /Users/madhusamuel/dev/swift/swift-corelibs-xctest/Sources/XCTest/Public/XCTestMain.swift:65:71:
>> error: 'lastPathComponent' is unavailable: Use lastPathComponent on URL
>> instead.
>> currentTestSuite = XCTestSuite(name:
>> "\(testBundle.bundlePath.lastPathComponent).xctest")
>>
>> ^~~~~~~~~~~~~~~~~
>> SwiftFoundation.String:173:16: note: 'lastPathComponent' has been
>> explicitly marked unavailable here
>> public var lastPathComponent: String { get }
>> ^
>>
>>
>> Error 2
>> --------------------------------------
>> CompileSwift normal x86_64
>> /Users/madhusamuel/dev/swift/swift-corelibs-xctest/Sources/XCTest/Private/TestListing.swift
>> cd /Users/madhusamuel/dev/swift/swift-corelibs-xctest
>> ...
>> ...
>> /Objects-normal/x86_64/TestListing.swiftdeps -o
>> /Users/madhusamuel/dev/swift/build/Ninja-ReleaseAssert/xctest-macosx-x86_64/XCTest.build/Debug/SwiftXCTest.build/Objects-normal/x86_64/TestListing.o
>> /Users/madhusamuel/dev/swift/swift-corelibs-xctest/Sources/XCTest/Private/TestListing.swift:45:46:
>> error: cannot convert value of type 'String.Encoding' to expected argument
>> type 'UInt'
>> print(NSString(data: json, encoding: NSUTF8StringEncoding)!)
>> ^~~~~~~~~~~~~~~~~~~~
>> .rawValue
>> Assertion failed: (!failed && "Call arguments did not match up?"),
>> function coerceCallArguments, file
>> /Users/madhusamuel/dev/swift/swift/lib/Sema/CSApply.cpp, line 4655.
>> 0 swift 0x000000010b6a6d5b
>> llvm::sys::PrintStackTrace(llvm::raw_ostream&) + 43
>> 1 swift 0x000000010b6a5f86
>> llvm::sys::RunSignalHandlers() + 70
>> 2 swift 0x000000010b6a7631 SignalHandler(int) + 641
>> 3 libsystem_platform.dylib 0x00007fff8ecf552a _sigtramp + 26
>> 4 swift 0x000000010c290579 cmark_strbuf__initbuf +
>> 73960
>> 5 swift 0x000000010b6a727e abort + 14
>> 6 swift 0x000000010b6a7261 __assert_rtn + 81
>> 7 swift 0x0000000108ff5bae (anonymous
>> namespace)::ExprRewriter::coerceCallArguments(swift::Expr*, swift::Type,
>> llvm::PointerUnion<swift::ApplyExpr*, llvm::PointerEmbeddedInt<unsigned
>> int, 2> >, swift::constraints::ConstraintLocatorBuilder) + 6190
>> 8 swift 0x0000000108fe4b0d (anonymous
>> namespace)::ExprRewriter::finishApply(swift::ApplyExpr*, swift::Type,
>> swift::constraints::ConstraintLocatorBuilder) + 541
>> 9 swift 0x0000000108ff638e (anonymous
>> namespace)::ExprRewriter::visitApplyExpr(swift::ApplyExpr*) + 78
>> 10 swift 0x0000000108fe2325 (anonymous
>> namespace)::ExprRewriter::walkToExprPost(swift::Expr*) + 21
>> 11 swift 0x0000000109180db0 (anonymous
>> namespace)::Traversal::visit(swift::Expr*) + 160
>> 12 swift 0x0000000109182969 (anonymous
>> namespace)::Traversal::visit(swift::Expr*) + 7257
>> 13 swift 0x0000000109180145
>> swift::Expr::walk(swift::ASTWalker&) + 53
>> 14 swift 0x0000000108fdedcb
>> swift::constraints::ConstraintSystem::applySolution(swift::constraints::Solution&,
>> swift::Expr*, swift::Type, bool, bool, bool) + 475
>> 15 swift 0x0000000109081e53
>> swift::TypeChecker::typeCheckExpression(swift::Expr*&, swift::DeclContext*,
>> swift::TypeLoc, swift::ContextualTypePurpose,
>> swift::OptionSet<swift::TypeCheckExprFlags, unsigned int>,
>> swift::ExprTypeCheckListener*) + 739
>> 16 swift 0x00000001090f9fc4
>> swift::ASTVisitor<(anonymous namespace)::StmtChecker, void, swift::Stmt*,
>> void, void, void, void>::visit(swift::Stmt*) + 4820
>> 17 swift 0x00000001090f8e3e
>> swift::ASTVisitor<(anonymous namespace)::StmtChecker, void, swift::Stmt*,
>> void, void, void, void>::visit(swift::Stmt*) + 334
>> 18 swift 0x00000001090f93d3
>> swift::ASTVisitor<(anonymous namespace)::StmtChecker, void, swift::Stmt*,
>> void, void, void, void>::visit(swift::Stmt*) + 1763
>> 19 swift 0x00000001090f8e3e
>> swift::ASTVisitor<(anonymous namespace)::StmtChecker, void, swift::Stmt*,
>> void, void, void, void>::visit(swift::Stmt*) + 334
>> 20 swift 0x00000001090f81f9 (anonymous
>> namespace)::StmtChecker::typeCheckBody(swift::BraceStmt*&) + 25
>> 21 swift 0x00000001090f74df
>> swift::TypeChecker::typeCheckFunctionBodyUntil(swift::FuncDecl*,
>> swift::SourceLoc) + 383
>> 22 swift 0x00000001090f7303
>> swift::TypeChecker::typeCheckAbstractFunctionBodyUntil(swift::AbstractFunctionDecl*,
>> swift::SourceLoc) + 35
>> 23 swift 0x00000001090f7e84
>> swift::TypeChecker::typeCheckAbstractFunctionBody(swift::AbstractFunctionDecl*)
>> + 180
>> 24 swift 0x00000001090b3116
>> typeCheckFunctionsAndExternalDecls(swift::TypeChecker&) + 166
>> 25 swift 0x00000001090b3db0
>> swift::performTypeChecking(swift::SourceFile&, swift::TopLevelContext&,
>> swift::OptionSet<swift::TypeCheckingFlags, unsigned int>, unsigned int,
>> unsigned int) + 1568
>> 26 swift 0x0000000108d714bc
>> swift::CompilerInstance::performSema() + 3916
>> 27 swift 0x0000000108885c8a
>> performCompile(swift::CompilerInstance&, swift::CompilerInvocation&,
>> llvm::ArrayRef<char const*>, int&, swift::FrontendObserver*) + 442
>> 28 swift 0x000000010888483f
>> swift::performFrontend(llvm::ArrayRef<char const*>, char const*, void*,
>> swift::FrontendObserver*) + 2895
>> 29 swift 0x0000000108847300 main + 2448
>> 30 libdyld.dylib 0x00007fff8bdc95ad start + 1
>> Stack dump:
>>
>>
>>
>>
>> On Sat, Jul 2, 2016 at 8:29 AM, Madhu Samuel <madhusamuel at gmail.com>
>> wrote:
>>
>>> Hi Brian,
>>>
>>> Thanks for you response.
>>>
>>> Still I cannot compile corelibs-xctest with xcode-beta. It seems the
>>> error is too generic to debug! If xctest is not yet configured against
>>> xcode 8 beta, probably, I will wait. At this point, I am lazy to create my
>>> own toolchain, since my last attempt went bust!
>>>
>>>
>>> The steps I followed
>>>
>>> 1. delete swift/build
>>> 2. utils/update-checkout
>>> 3. sudo xcode-select -s
>>> /Applications/Xcode-beta.app/Contents/Developer
>>> 4. utils/build-script -r -t (success)
>>> 5. utils/build-script -R. (success)
>>> 6.
>>> $ cd swift-corelibs-xctest
>>> $ ../swift/utils/build-script --preset corelibs-xctest
>>>
>>>
>>> Environment
>>>
>>> *Swift Version: Swift version 3.0 (swiftlang-800.0.30 clang-800.0.24)*
>>> Xcode Environment: Version 8.0 beta (8S128d)
>>> Python Version: Python 2.7.10
>>>
>>>
>>>
>>> The Error
>>>
>>> CompileSwift normal x86_64
>>> /Users/madhusamuel/dev/swift/swift-corelibs-xctest/Sources/XCTest/Public/XCTestExpectation.swift
>>>
>>> .....
>>> ....
>>>
>>>
>>> <unknown>:0: error: unable to execute command: Illegal instruction: 4
>>> <unknown>:0: error: compile command failed due to signal (use -v to see
>>> invocation)
>>> ** BUILD FAILED **
>>>
>>>
>>> The following build commands failed:
>>> CompileSwift normal x86_64
>>> /Users/madhusamuel/dev/swift/swift-corelibs-xctest/Sources/XCTest/Public/XCTestMain.swift
>>> CompileSwift normal x86_64
>>> /Users/madhusamuel/dev/swift/swift-corelibs-xctest/Sources/XCTest/Private/TestListing.swift
>>> CompileSwiftSources normal x86_64 com.apple.xcode.tools.swift.compiler
>>> (3 failures)
>>> Traceback (most recent call last):
>>> File
>>> "/Users/madhusamuel/dev/swift/swift-corelibs-xctest/build_script.py", line
>>> 445, in <module>
>>> main()
>>> File
>>> "/Users/madhusamuel/dev/swift/swift-corelibs-xctest/build_script.py", line
>>> 441, in main
>>> parsed_args.func(parsed_args)
>>> File
>>> "/Users/madhusamuel/dev/swift/swift-corelibs-xctest/build_script.py", line
>>> 64, in build
>>> source_dir=SOURCE_DIR))
>>> File
>>> "/Users/madhusamuel/dev/swift/swift-corelibs-xctest/build_script.py", line
>>> 30, in run
>>> subprocess.check_call(command, shell=True)
>>> File
>>> "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py",
>>> line 540, in check_call
>>> raise CalledProcessError(retcode, cmd)
>>> subprocess.CalledProcessError: Command 'xcodebuild -workspace
>>> /Users/madhusamuel/dev/swift/swift-corelibs-xctest/XCTest.xcworkspace
>>> -scheme SwiftXCTest
>>> SWIFT_EXEC="/Users/madhusamuel/dev/swift/build/Ninja-ReleaseAssert/swift-macosx-x86_64/bin/swiftc"
>>> SWIFT_LINK_OBJC_RUNTIME=YES
>>> SYMROOT="/Users/madhusamuel/dev/swift/build/Ninja-ReleaseAssert/xctest-macosx-x86_64"
>>> OBJROOT="/Users/madhusamuel/dev/swift/build/Ninja-ReleaseAssert/xctest-macosx-x86_64"'
>>> returned non-zero exit status 65
>>> ../swift/utils/build-script: fatal error: command terminated with a
>>> non-zero exit status 1, aborting
>>> ../swift/utils/build-script: fatal error: command terminated with a
>>> non-zero exit status 1, aborting
>>>
>>>
>>> Regards,
>>> Madhu
>>>
>>> On Thu, Jun 30, 2016 at 11:38 PM, Brian Gesiak <modocache at gmail.com>
>>> wrote:
>>>
>>>> Madhu,
>>>>
>>>> Sorry for the late reply to this -- I obviously need to update my email
>>>> settings! :(
>>>>
>>>> Could you pull down the latest changes to Swift, and let me know if
>>>> you're still experiencing difficulties compiling corelibs-xctest?
>>>>
>>>> - Brian Gesiak
>>>>
>>>>
>>>> On Tue, Jun 21, 2016 at 12:03 AM, Madhu Samuel <madhusamuel at gmail.com>
>>>> wrote:
>>>>
>>>>> Wow, the swift build is a success. Though there are a few warnings at
>>>>> the end. I guess the issue was with cached values in the build directory.
>>>>>
>>>>> But, in the next step to build xctest using "/utils/build-script
>>>>> --preset corelibs-xctest", the build fails. The build error log is given
>>>>> below.
>>>>>
>>>>> ------------------------
>>>>>
>>>>> CompileSwift normal x86_64
>>>>> /Users/madhusamuel/dev/swift/swift-corelibs-xctest/Sources/XCTest/Public/XCTestExpectation.swift
>>>>> ....
>>>>> ....
>>>>>
>>>>> <unknown>:0: error: unable to execute command: Illegal instruction: 4
>>>>> <unknown>:0: error: compile command failed due to signal (use -v to
>>>>> see invocation)
>>>>> ** BUILD FAILED **
>>>>>
>>>>>
>>>>> The following build commands failed:
>>>>> CompileSwift normal x86_64
>>>>> /Users/madhusamuel/dev/swift/swift-corelibs-xctest/Sources/XCTest/Private/TestListing.swift
>>>>> CompileSwiftSources normal x86_64 com.apple.xcode.tools.swift.compiler
>>>>> (2 failures)
>>>>> Traceback (most recent call last):
>>>>> File
>>>>> "/Users/madhusamuel/dev/swift/swift-corelibs-xctest/build_script.py", line
>>>>> 445, in <module>
>>>>> main()
>>>>> File
>>>>> "/Users/madhusamuel/dev/swift/swift-corelibs-xctest/build_script.py", line
>>>>> 441, in main
>>>>> parsed_args.func(parsed_args)
>>>>> File
>>>>> "/Users/madhusamuel/dev/swift/swift-corelibs-xctest/build_script.py", line
>>>>> 64, in build
>>>>> source_dir=SOURCE_DIR))
>>>>> File
>>>>> "/Users/madhusamuel/dev/swift/swift-corelibs-xctest/build_script.py", line
>>>>> 30, in run
>>>>> subprocess.check_call(command, shell=True)
>>>>> File
>>>>> "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py",
>>>>> line 540, in check_call
>>>>> raise CalledProcessError(retcode, cmd)
>>>>> subprocess.CalledProcessError: Command 'xcodebuild -workspace
>>>>> /Users/madhusamuel/dev/swift/swift-corelibs-xctest/XCTest.xcworkspace
>>>>> -scheme SwiftXCTest
>>>>> SWIFT_EXEC="/Users/madhusamuel/dev/swift/build/Ninja-ReleaseAssert/swift-macosx-x86_64/bin/swiftc"
>>>>> SWIFT_LINK_OBJC_RUNTIME=YES
>>>>> SYMROOT="/Users/madhusamuel/dev/swift/build/Ninja-ReleaseAssert/xctest-macosx-x86_64"
>>>>> OBJROOT="/Users/madhusamuel/dev/swift/build/Ninja-ReleaseAssert/xctest-macosx-x86_64"'
>>>>> returned non-zero exit status 65
>>>>> ../swift/utils/build-script: fatal error: command terminated with a
>>>>> non-zero exit status 1, aborting
>>>>> ../swift/utils/build-script: fatal error: command terminated with a
>>>>> non-zero exit status 1, aborting
>>>>>
>>>>>
>>>>>
>>>>> On Tue, Jun 21, 2016 at 12:35 PM, Madhu Samuel <madhusamuel at gmail.com>
>>>>> wrote:
>>>>>
>>>>>> Hi Brian Croom,
>>>>>>
>>>>>> Thanks for the quick response. I deleted the entire build directory
>>>>>> now. Initiated a new build. Fingers crossed...
>>>>>>
>>>>>> Will update the status as soon as the build finishes.
>>>>>>
>>>>>> On Tue, Jun 21, 2016 at 12:31 PM, Brian Croom <
>>>>>> brian.s.croom at gmail.com> wrote:
>>>>>>
>>>>>>> Hmm, have you tried deleting your `build/swift-macosx-x86_64/`
>>>>>>> directory? I wonder if cached CMake values could cause that issue.
>>>>>>>
>>>>>>> (By the way, I can confirm that getting the build going for the
>>>>>>> first time is the most challenging! I hope we can get things going for you
>>>>>>> soon.)
>>>>>>>
>>>>>>> 2016-06-20 22:22 GMT-04:00 Madhu Samuel <madhusamuel at gmail.com>:
>>>>>>>
>>>>>>>> So after spending almost a week trying to build swift and core
>>>>>>>> libraries (mainly xctest) during the end of May un-successfully, I made up
>>>>>>>> my mind to give another attempt today.
>>>>>>>>
>>>>>>>> I checkout the latest code from swift repo. Since the xctest
>>>>>>>> documentation says, "Confirm you're able to build the Swift project using
>>>>>>>> utils/build-script -R", that's where I started.
>>>>>>>>
>>>>>>>> Unfortunately, build-script -R gives the below error.
>>>>>>>>
>>>>>>>> <unknown>:0: error: Swift does not support the SDK 'MacOSX10.11.sdk'
>>>>>>>>
>>>>>>>>
>>>>>>>> My active developer directory is
>>>>>>>> '/Applications/Xcode-beta.app/Contents/Developer'.
>>>>>>>> The toolchain is 'Xode 8.0'
>>>>>>>>
>>>>>>>> The build is taken in Mac OSX El Capitan 10.11.4
>>>>>>>>
>>>>>>>> Let me know whether I miss anything? I assume getting the build
>>>>>>>> working for the first time is the hardest, but there I am!
>>>>>>>>
>>>>>>>> Any help is appreciated!
>>>>>>>>
>>>>>>>> Regards,
>>>>>>>> Madhu
>>>>>>>>
>>>>>>>> On Mon, May 30, 2016 at 8:32 AM, Madhu Samuel <
>>>>>>>> madhusamuel at gmail.com> wrote:
>>>>>>>>
>>>>>>>>> Wow, that was a quick response. Thanks Brian Gesiak and Brian
>>>>>>>>> Croom.
>>>>>>>>>
>>>>>>>>> My first quick attempt using build-toolchain script to build my
>>>>>>>>> own tool chain failed. Anyway I will give it another try and let you know
>>>>>>>>> the status.
>>>>>>>>>
>>>>>>>>> On Mon, May 30, 2016 at 1:52 AM, Brian Croom <
>>>>>>>>> brian.s.croom at gmail.com> wrote:
>>>>>>>>>
>>>>>>>>>> That's right, breaking changes have been made to Swift since
>>>>>>>>>> the latest toolchain snapshot was released, and Corelibs Foundation has
>>>>>>>>>> been updated accordingly.
>>>>>>>>>>
>>>>>>>>>> Until the next snapshot, an alternative to building your own
>>>>>>>>>> toolchain would be to check out an older commit of Foundation which still
>>>>>>>>>> builds with the compiler in the snapshot toolchain, since XCTest
>>>>>>>>>> doesn't depend on any of the more recent Foundation changes. I've had
>>>>>>>>>> success using this commit:
>>>>>>>>>> https://github.com/apple/swift-corelibs-foundation/commit/04d4f92870652160388f1c69de3fd7bb0656860c
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> --Brian
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> söndag 29 maj 2016 skrev Brian Gesiak via swift-corelibs-dev <
>>>>>>>>>> swift-corelibs-dev at swift.org>:
>>>>>>>>>>
>>>>>>>>>>> Madhu,
>>>>>>>>>>>
>>>>>>>>>>> Oy, my bad -- I only just noticed you put the toolchain version
>>>>>>>>>>> at the bottom of your original email.
>>>>>>>>>>>
>>>>>>>>>>> It's possible the May 9th toolchain is already too old to build
>>>>>>>>>>> XCTest. I'll double-check myself. In the meantime, you may want to try
>>>>>>>>>>> building your own toolchain and using that.
>>>>>>>>>>>
>>>>>>>>>>> - Brian Gesiak
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> On Sun, May 29, 2016 at 7:23 AM -0700, "Brian Gesiak" <
>>>>>>>>>>> modocache at gmail.com> wrote:
>>>>>>>>>>>
>>>>>>>>>>> Madhu,
>>>>>>>>>>>>
>>>>>>>>>>>> Thanks for the report!
>>>>>>>>>>>>
>>>>>>>>>>>> The main difference between the build scripts (which use
>>>>>>>>>>>> xcodebuild) and using Xcode itself is the version of Swift that is used.
>>>>>>>>>>>> The build scripts build a Swift 3.0 compiler, then use that to build
>>>>>>>>>>>> XCTest. When using Xcode directly, you need to select a recent Swift
>>>>>>>>>>>> toolchain yourself.
>>>>>>>>>>>>
>>>>>>>>>>>> Which Swift toolchain are you using to compile XCTest in Xcode?
>>>>>>>>>>>>
>>>>>>>>>>>> Our tests only make sure apple/swift master works. If the
>>>>>>>>>>>> latest Swift toolchain from http://swift.org doesn't work, you
>>>>>>>>>>>> may have to built your own toolchain. You can do so using the
>>>>>>>>>>>> `utils/build-toolchain` script in the Swift repository.
>>>>>>>>>>>>
>>>>>>>>>>>> Once you figure out your Swift toolchain version, let us know!
>>>>>>>>>>>> You should be able to find out in the preferences pane in Xcode.
>>>>>>>>>>>>
>>>>>>>>>>>> - Brian Gesiak
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>> On Sun, May 29, 2016 at 1:24 AM -0700, "Madhu Samuel via
>>>>>>>>>>>> swift-corelibs-dev" <swift-corelibs-dev at swift.org> wrote:
>>>>>>>>>>>>
>>>>>>>>>>>> Hi All,
>>>>>>>>>>>>>
>>>>>>>>>>>>> I am new to this forum.
>>>>>>>>>>>>>
>>>>>>>>>>>>> I am trying to build the xctest project. I followed the
>>>>>>>>>>>>> instructions at https://github.com/apple/swift-corelibs-xctest
>>>>>>>>>>>>>
>>>>>>>>>>>>> I am able to successfully build via the build scripts. But, if
>>>>>>>>>>>>> I build XCTest using xcode using the SwiftXCTest scheme I am getting a few
>>>>>>>>>>>>> errors.
>>>>>>>>>>>>>
>>>>>>>>>>>>> 1.
>>>>>>>>>>>>> swift-corelibs-foundation/Foundation/NSXMLDTDNode.swift:242:64: error:
>>>>>>>>>>>>> cannot convert value of type 'UnsafeMutablePointer<Void>' (aka
>>>>>>>>>>>>> 'UnsafeMutablePointer<()>') to expected argument type 'OpaquePointer'
>>>>>>>>>>>>> let unmanaged =
>>>>>>>>>>>>> Unmanaged<NSXMLDTDNode>.fromOpaque(privateData)
>>>>>>>>>>>>>
>>>>>>>>>>>>> 2. swift-corelibs-foundation/Foundation/NSTimer.swift:14:47:
>>>>>>>>>>>>> error: cannot convert value of type 'UnsafeMutablePointer<Void>' (aka
>>>>>>>>>>>>> 'UnsafeMutablePointer<()>') to expected argument type 'OpaquePointer'
>>>>>>>>>>>>> let t =
>>>>>>>>>>>>> Unmanaged<NSTimer>.fromOpaque(info!).takeUnretainedValue()
>>>>>>>>>>>>>
>>>>>>>>>>>>> etc.
>>>>>>>>>>>>>
>>>>>>>>>>>>> My dev environment,
>>>>>>>>>>>>> OS: Mac OSX El Capitan 10.11.4 (15E65).
>>>>>>>>>>>>> Xcode Version: Version 7.3.1 (7D1014)
>>>>>>>>>>>>> XCode Toolchain: Swift Development Snapshot 2016-05-09 (a)
>>>>>>>>>>>>>
>>>>>>>>>>>>> Any help is appreciated.
>>>>>>>>>>>>>
>>>>>>>>>>>>> Regards,
>>>>>>>>>>>>> Madhu
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>
>>>>>
>>>>
>>>
>>
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