[swift-dev] Module verifier error with master branch

[Raj Barik]

OS: 10.12.6 (16G29)

Steps:
1) Checkout swift and build master branch
       git clone https://github.com/apple/swift.git
   ./swift/utils/update-checkout --clone

2) Edit swift/utils/build-presets.ini to remove tests
   [preset: buildbot_osx_package]
   mixin-preset=
    mixin_osx_package_base
    mixin_lightweight_assertions
    ...
3) Execute ./swift/utils/build-toolchain local.swift

4) Execute n sample swift package in Xcode:

Error:

Invalid bitcast

  %195 = bitcast i64 %194 to %objc_object*, !dbg !431

Invalid bitcast

  %256 = bitcast i64 %255 to %objc_object*, !dbg !443

<unknown>:0: error: fatal error encountered during compilation; please file
a bug report with your project and the crash log

<unknown>:0: note: Broken function found, compilation aborted!

0  swiftc                   0x000000010955ebc8
llvm::sys::PrintStackTrace(llvm::raw_ostream&)
+ 40

1  swiftc                   0x000000010955def6
llvm::sys::RunSignalHandlers() + 86

2  swiftc                   0x000000010955f12e SignalHandler(int) + 270

3  libsystem_platform.dylib 0x00007fffbb08cb3a _sigtramp + 26

4  libsystem_platform.dylib 0x000070000b4115a0 _sigtramp + 1345866368

5  libsystem_c.dylib        0x00007fffbaf11420 abort + 129

6  swiftc                   0x00000001067985c7
swift::performFrontend(llvm::ArrayRef<char
const*>, char const*, void*, swift::FrontendObserver*)::$_0::__invoke(void*,
std::__1::basic_string<char, std::__1::char_traits<char>,
std::__1::allocator<char> > const&, bool) + 551

7  swiftc                   0x0000000109506cac
llvm::report_fatal_error(llvm::Twine const&, bool) + 252

8  swiftc                   0x0000000109506baa
llvm::report_fatal_error(char const*, bool) + 42

9  swiftc                   0x00000001094c0d06 (anonymous namespace)::
VerifierLegacyPass::runOnFunction(llvm::Function&) + 54

10 swiftc                   0x0000000109466b22
llvm::FPPassManager::runOnFunction(llvm::Function&)
+ 498

11 swiftc                   0x00000001094663b9 llvm::legacy::
FunctionPassManagerImpl::run(llvm::Function&) + 169

12 swiftc                   0x000000010946627a llvm::legacy::
FunctionPassManager::run(llvm::Function&) + 362

13 swiftc                   0x0000000106893e02 swift::
performLLVMOptimizations(swift::IRGenOptions&, llvm::Module*,
llvm::TargetMachine*) + 1410

14 swiftc                   0x0000000106894736
swift::performLLVM(swift::IRGenOptions&,
swift::DiagnosticEngine*, llvm::sys::SmartMutex<false>*,
llvm::GlobalVariable*, llvm::Module*, llvm::TargetMachine*,
swift::version::Version const&, llvm::StringRef,
swift::UnifiedStatsReporter*) + 1574

15 swiftc                   0x00000001068993c9
ThreadEntryPoint(swift::irgen::IRGenerator*, llvm::sys::SmartMutex<false>*,
int) + 249

16 swiftc                   0x0000000106899fff void*
std::__1::__thread_proxy<std::__1::tuple<std::__1::unique_ptr<std::__1::__thread_struct,
std::__1::default_delete<std::__1::__thread_struct> >, void
(*)(swift::irgen::IRGenerator*, llvm::sys::SmartMutex<false>*, int),
swift::irgen::IRGenerator*, llvm::sys::SmartMutex<false>*, int> >(void*) +
47

17 libsystem_pthread.dylib  0x00007fffbb09693b _pthread_body + 180

18 libsystem_pthread.dylib  0x00007fffbb096887 _pthread_body + 0

19 libsystem_pthread.dylib  0x00007fffbb09608d thread_start + 13

Stack dump:

0. Running pass 'Module Verifier' on function '@_FUNCTION_NAME_'


Does anyone know how to turn off module verifier or fix the above error (I
do not see the "-disable-llvm-verify" option with swift/swiftc command
line)?
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