SILOptimizerCapturePromotionCrash.md

func foo(closure: Void -> Int) {}

extension Dictionary {
    func bar() {
        var x = 0
        foo { x }
    }
}

swift: /home/buildslave/jenkins/workspace/oss-swift-linux-packages-ubuntu_14_04/swift/lib/SILPasses/IPO/CapturePromotion.cpp:858: swift::SILFunction *constructClonedFunction(swift::PartialApplyInst *, swift::FunctionRefInst *, IndicesSet &): Assertion `!genericSig && "Function type has Unexpected generic signature!"' failed.
0  swift           0x0000000002f15e78 llvm::sys::PrintStackTrace(llvm::raw_ostream&) + 40
1  swift           0x0000000002f14646 llvm::sys::RunSignalHandlers() + 54
2  swift           0x0000000002f169aa
3  libpthread.so.0 0x00007fdb10696340
4  libc.so.6       0x00007fdb0f8becc9 gsignal + 57
5  libc.so.6       0x00007fdb0f8c20d8 abort + 328
6  libc.so.6       0x00007fdb0f8b7b86
7  libc.so.6       0x00007fdb0f8b7c32
8  swift           0x0000000000abc8c3
9  swift           0x0000000000ab898b
10 swift           0x00000000009eae8c swift::SILPassManager::runOneIteration() + 1820
11 swift           0x00000000009eb83b swift::SILPassManager::run() + 971
12 swift           0x00000000009f1096 swift::runSILDiagnosticPasses(swift::SILModule&) + 294
13 swift           0x00000000007648a9
14 swift           0x000000000076083c frontend_main(llvm::ArrayRef<char const*>, char const*, void*) + 2444
15 swift           0x000000000075b441 main + 2705
16 libc.so.6       0x00007fdb0f8a9ec5 __libc_start_main + 245
17 swift           0x000000000075a8bd