{"action":"closed","number":1,"pull_request":{"url":"https://api.github.com/repos/dm1973/numenta-apps/pulls/1","id":47171896,"html_url":"https://github.com/dm1973/numenta-apps/pull/1","diff_url":"https://github.com/dm1973/numenta-apps/pull/1.diff","patch_url":"https://github.com/dm1973/numenta-apps/pull/1.patch","issue_url":"https://api.github.com/repos/dm1973/numenta-apps/issues/1","number":1,"state":"closed","locked":false,"title":"This line causes Xcode to crash. I don't know why.","user":{"login":"lscheinkman","id":3209822,"avatar_url":"https://avatars.githubusercontent.com/u/3209822?v=3","gravatar_id":"","url":"https://api.github.com/users/lscheinkman","html_url":"https://github.com/lscheinkman","followers_url":"https://api.github.com/users/lscheinkman/followers","following_url":"https://api.github.com/users/lscheinkman/following{/other_user}","gists_url":"https://api.github.com/users/lscheinkman/gists{/gist_id}","starred_url":"https://api.github.com/users/lscheinkman/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/lscheinkman/subscriptions","organizations_url":"https://api.github.com/users/lscheinkman/orgs","repos_url":"https://api.github.com/users/lscheinkman/repos","events_url":"https://api.github.com/users/lscheinkman/events{/privacy}","received_events_url":"https://api.github.com/users/lscheinkman/received_events","type":"User","site_admin":false},"body":"@dm1973 This [line](https://github.com/dm1973/numenta-apps/pull/1/files#diff-b73a28544af906f7f96eef39a6ab2648L301) caused Xcode to crash on my computer when using the following command to build the app:\r\n```\r\nxcodebuild -workspace taurus.xcworkspace -scheme Taurus\r\n```\r\nHere is the stack dump:\r\n```\r\n1.\tWhile emitting SIL for 'drawValues' at /work/github/numenta/products/mobile-core/ios/ui/LineChartView.swift:237:5\r\n\r\n<unknown>:0: error: unable to execute command: Segmentation fault: 11\r\n<unknown>:0: error: swift frontend command failed due to signal (use -v to see invocation)\r\n\r\nStack dump:\r\n\r\n0  swift                    0x000000010d830edb llvm::sys::PrintStackTrace(__sFILE*) + 43\r\n1  swift                    0x000000010d83161b SignalHandler(int) + 379\r\n2  libsystem_platform.dylib 0x00007fff8b7d8f1a _sigtramp + 26\r\n3  swift                    0x000000010bb47d2a (anonymous namespace)::Transform::transform(swift::Lowering::ManagedValue, swift::Lowering::AbstractionPattern, swift::CanType, swift::Lowering::SGFContext) + 138\r\n4  swift                    0x000000010bfb703c swift::NominalTypeDecl::getMembers(bool) const + 28\r\n5  swift                    0x000000010bac5328 (anonymous namespace)::LowerType::visitAnyStructType(swift::CanType, swift::StructDecl*) + 40\r\n6  swift                    0x000000010bac119c swift::Lowering::TypeConverter::getTypeLoweringForUncachedLoweredType(swift::Lowering::TypeConverter::TypeKey) + 188\r\n7  swift                    0x000000010bac05be swift::Lowering::TypeConverter::getTypeLowering(swift::Lowering::AbstractionPattern, swift::Type, unsigned int) + 2846\r\n8  swift                    0x000000010bac028c swift::Lowering::TypeConverter::getTypeLowering(swift::Lowering::AbstractionPattern, swift::Type, unsigned int) + 2028\r\n9  swift                    0x000000010bb206a2 emitAddressOnlyErasure(swift::Lowering::SILGenFunction&, swift::ErasureExpr*, swift::Lowering::SGFContext) + 1026\r\n10 swift                    0x000000010bb1a9da swift::ASTVisitor<(anonymous namespace)::RValueEmitter, swift::Lowering::RValue, void, void, void, void, void, swift::Lowering::SGFContext>::visit(swift::Expr*, swift::Lowering::SGFContext) + 15530\r\n11 swift                    0x000000010bb16f77 swift::ASTVisitor<(anonymous namespace)::RValueEmitter, swift::Lowering::RValue, void, void, void, void, void, swift::Lowering::SGFContext>::visit(swift::Expr*, swift::Lowering::SGFContext) + 583\r\n12 swift                    0x000000010bb12967 swift::Lowering::SILGenFunction::emitExprInto(swift::Expr*, swift::Lowering::Initialization*) + 263\r\n13 swift                    0x000000010baf6303 (anonymous namespace)::ArgEmitter::emit(swift::Lowering::ArgumentSource&&, swift::Lowering::AbstractionPattern) + 1843\r\n14 swift                    0x000000010baf781d (anonymous namespace)::ArgEmitter::emitShuffle(swift::Expr*, swift::Expr*, llvm::ArrayRef<swift::TupleTypeElt>, swift::ConcreteDeclRef, llvm::ArrayRef<swift::Expr*>, llvm::ArrayRef<int>, llvm::ArrayRef<unsigned int>, swift::Type, swift::Lowering::AbstractionPattern) + 2445\r\n15 swift                    0x000000010baf6e05 (anonymous namespace)::ArgEmitter::emitExpanded(swift::Lowering::ArgumentSource&&, swift::Lowering::AbstractionPattern) + 1685\r\n16 swift                    0x000000010baf66d3 (anonymous namespace)::ArgEmitter::emit(swift::Lowering::ArgumentSource&&, swift::Lowering::AbstractionPattern) + 2819\r\n17 swift                    0x000000010baf561b (anonymous namespace)::CallSite::emit(swift::Lowering::SILGenFunction&, swift::Lowering::AbstractionPattern, (anonymous namespace)::ParamLowering&, llvm::SmallVectorImpl<swift::Lowering::ManagedValue>&, llvm::SmallVectorImpl<std::__1::pair<swift::Lowering::LValue, swift::SILLocation> >&, llvm::Optional<swift::ForeignErrorConvention> const&) && + 315\r\n18 swift                    0x000000010baea4ba (anonymous namespace)::CallEmission::apply(swift::Lowering::SGFContext) + 2730\r\n19 swift                    0x000000010bae920a swift::Lowering::SILGenFunction::emitApplyExpr(swift::Expr*, swift::Lowering::SGFContext) + 58\r\n20 swift                    0x000000010bb16ea4 swift::ASTVisitor<(anonymous namespace)::RValueEmitter, swift::Lowering::RValue, void, void, void, void, void, swift::Lowering::SGFContext>::visit(swift::Expr*, swift::Lowering::SGFContext) + 372\r\n21 swift                    0x000000010bb154ad swift::Lowering::SILGenFunction::emitIgnoredExpr(swift::Expr*) + 397\r\n22 swift                    0x000000010bb55e46 swift::ASTVisitor<(anonymous namespace)::StmtEmitter, void, void, void, void, void, void>::visit(swift::Stmt*) + 294\r\n23 swift                    0x000000010bb57ab9 swift::ASTVisitor<(anonymous namespace)::StmtEmitter, void, void, void, void, void, void>::visit(swift::Stmt*) + 7577\r\n24 swift                    0x000000010bb55e7b swift::ASTVisitor<(anonymous namespace)::StmtEmitter, void, void, void, void, void, void>::visit(swift::Stmt*) + 347\r\n25 swift                    0x000000010bb55d15 swift::Lowering::SILGenFunction::emitStmt(swift::Stmt*) + 21\r\n26 swift                    0x000000010bb26e7b swift::Lowering::SILGenFunction::emitFunction(swift::FuncDecl*) + 331\r\n27 swift                    0x000000010badf01f swift::Lowering::SILGenModule::emitFunction(swift::FuncDecl*) + 479\r\n28 swift                    0x000000010bb5a867 (anonymous namespace)::SILGenType::emitType() + 871\r\n29 swift                    0x000000010bb5a48e swift::Lowering::SILGenModule::visitNominalTypeDecl(swift::NominalTypeDecl*) + 30\r\n30 swift                    0x000000010bae276b swift::Lowering::SILGenModule::emitSourceFile(swift::SourceFile*, unsigned int) + 779\r\n31 swift                    0x000000010bae3330 swift::SILModule::constructSIL(swift::ModuleDecl*, swift::SILOptions&, swift::FileUnit*, llvm::Optional<unsigned int>, bool, bool) + 944\r\n32 swift                    0x000000010bae36dd swift::performSILGeneration(swift::FileUnit&, swift::SILOptions&, llvm::Optional<unsigned int>, bool) + 109\r\n33 swift                    0x000000010b941fd5 performCompile(swift::CompilerInstance&, swift::CompilerInvocation&, llvm::ArrayRef<char const*>, int&) + 11445\r\n34 swift                    0x000000010b93f10a frontend_main(llvm::ArrayRef<char const*>, char const*, void*) + 2682\r\n35 swift                    0x000000010b93b797 main + 2247\r\n36 libdyld.dylib            0x00007fff900795c9 start + 1\r\n```\r\n\r\nOnce this `print` is removed the build works.\r\n\r\nCC: @jcasner, 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