[SR-8386] Compiler crash around @_specialized method #50913
Comments
|
Worth noting as always that attributes that start with an underscore are not officially supported for use outside the standard library. cc @eeckstein |
AnthonyLatsis
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the
crash
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Attachment: Download
Environment
I'm using the latest Xcode 10L213o on macOS 17G65, on a MacBookPro (config attached).
Additional Detail from JIRA
md5: ba68119c6dbb344e8e40c16e75ead965
Issue Description:
When compiling the unit tests on my swift-nio-http2 repo with the latest Xcode beta (10L213o), I get a segmentation fault from the compiler indicating a problem with an
@_specializedmethod. When I switch back to mainline Xcode (9E145) everything compiles and runs correctly.I've tagged the build on which I can reproduce it as Swift-42-specialized-compiler-crash, and you can find it on Github, and I've attached a fresh checkout below.
Here's the compiler output:
/Applications/Xcode-beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc -target x86_64-apple-macosx10.10 -sdk /Applications/Xcode-beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.14.sdk -F /Applications/Xcode-beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks -lz -L/usr/local/Cellar/nghttp2/1.32.0/lib -lnghttp2 -L /Users/jdovey/Projects/Github/Quatermain/swift-nio-http2/.build/x86_64-apple-macosx10.10/release -o /Users/jdovey/Projects/Github/Quatermain/swift-nio-http2/.build/x86_64-apple-macosx10.10/release/NIOHTTP2Server -module-name NIOHTTP2Server -emit-executable @/Users/jdovey/Projects/Github/Quatermain/swift-nio-http2/.build/x86_64-apple-macosx10.10/release/NIOHTTP2Server.product/Objects.LinkFileList{{ 0 swift 0x000000010da90b8a PrintStackTraceSignalHandler(void*) + 42}}
{{ 1 swift 0x000000010da9032e SignalHandler(int) + 302}}
{{ 2 libsystem_platform.dylib 0x00007fff51549f5a _sigtramp + 26}}
{{ 3 libsystem_malloc.dylib 0x00007fff513e7891 malloc_zone_memalign + 154}}
{{ 4 swift 0x000000010aa3f4f4 removeArgument(swift::SILBasicBlock*, unsigned int) + 1636}}
{{ 5 swift 0x000000010aa3d43b (anonymous namespace)::SimplifyCFG::simplifyArgs(swift::SILBasicBlock*) + 9195}}
{{ 6 swift 0x000000010aa3ab85 (anonymous namespace)::SimplifyCFG::simplifyBlocks() + 28261}}
{{ 7 swift 0x000000010aa2d919 (anonymous namespace)::SimplifyCFG::run() + 73}}
{{ 8 swift 0x000000010aa2d89c (anonymous namespace)::SimplifyCFGPass::run() + 716}}
{{ 9 swift 0x000000010a9145b9 swift::SILPassManager::execute() + 3977}}
{{ 10 swift 0x0000000109d50269 performCompile(swift::CompilerInstance&, swift::CompilerInvocation&, llvm::ArrayRef<char const*>, int&, swift::FrontendObserver*, swift::UnifiedStatsReporter*) + 47753}}
{{ 11 swift 0x0000000109d412e5 swift::performFrontend(llvm::ArrayRef<char const*>, char const*, void*, swift::FrontendObserver*) + 7733}}
{{ 12 swift 0x0000000109ce7155 main + 1349}}
{{ 13 libdyld.dylib 0x00007fff5123b015 start + 1}}
{{ Stack dump:}}
{{ 0. Program arguments: /Applications/Xcode-beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift -frontend -c /Users/jdovey/Projects/Github/Quatermain/swift-nio-http2/Sources/NIOHPACK/DynamicHeaderTable.swift /Users/jdovey/Projects/Github/Quatermain/swift-nio-http2/Sources/NIOHPACK/HPACKDecoder.swift /Users/jdovey/Projects/Github/Quatermain/swift-nio-http2/Sources/NIOHPACK/HPACKEncoder.swift /Users/jdovey/Projects/Github/Quatermain/swift-nio-http2/Sources/NIOHPACK/HPACKErrors.swift /Users/jdovey/Projects/Github/Quatermain/swift-nio-http2/Sources/NIOHPACK/HPACKHeader.swift /Users/jdovey/Projects/Github/Quatermain/swift-nio-http2/Sources/NIOHPACK/HeaderTables.swift /Users/jdovey/Projects/Github/Quatermain/swift-nio-http2/Sources/NIOHPACK/HuffmanCoding.swift /Users/jdovey/Projects/Github/Quatermain/swift-nio-http2/Sources/NIOHPACK/HuffmanTables.swift /Users/jdovey/Projects/Github/Quatermain/swift-nio-http2/Sources/NIOHPACK/IndexedHeaderTable.swift /Users/jdovey/Projects/Github/Quatermain/swift-nio-http2/Sources/NIOHPACK/IntegerCoding.swift /Users/jdovey/Projects/Github/Quatermain/swift-nio-http2/Sources/NIOHPACK/RingBufferView.swift /Users/jdovey/Projects/Github/Quatermain/swift-nio-http2/Sources/NIOHPACK/StaticHeaderTable.swift /Users/jdovey/Projects/Github/Quatermain/swift-nio-http2/Sources/NIOHPACK/StringRing.swift -supplementary-output-file-map /var/folders/2s/f233289n74qdm329zr6j7r6r000v1k/T/org.swift.swiftpm.jdovey/supplementaryOutputs-f1c3a1 -target x86_64-apple-macosx10.10 -enable-objc-interop -sdk /Applications/Xcode-beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.14.sdk -I /Users/jdovey/Projects/Github/Quatermain/swift-nio-http2/.build/x86_64-apple-macosx10.10/release -I /Users/jdovey/Projects/Github/Quatermain/swift-nio-http2/.build/checkouts/swift-nio.git-5049989083880110873/Sources/CNIOZlib/include -I /Users/jdovey/Projects/Github/Quatermain/swift-nio-http2/.build/checkouts/swift-nio.git-5049989083880110873/Sources/CNIOHTTPParser/include -I /Users/jdovey/Projects/Github/Quatermain/swift-nio-http2/.build/checkouts/swift-nio.git-5049989083880110873/Sources/CNIOSHA1/include -I /Users/jdovey/Projects/Github/Quatermain/swift-nio-http2/.build/checkouts/swift-nio.git-5049989083880110873/Sources/CNIOAtomics/include -I /Users/jdovey/Projects/Github/Quatermain/swift-nio-http2/.build/checkouts/swift-nio.git-5049989083880110873/Sources/CNIODarwin/include -I /Users/jdovey/Projects/Github/Quatermain/swift-nio-http2/.build/checkouts/swift-nio.git-5049989083880110873/Sources/CNIOLinux/include -I /usr/local/Cellar/nghttp2/1.32.0/include -F /Applications/Xcode-beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks -module-cache-path /Users/jdovey/Projects/Github/Quatermain/swift-nio-http2/.build/x86_64-apple-macosx10.10/release/ModuleCache -swift-version 4 -O -D SWIFT_PACKAGE -color-diagnostics -Xcc -fmodule-map-file=/Users/jdovey/Projects/Github/Quatermain/swift-nio-http2/.build/x86_64-apple-macosx10.10/release/CNIOZlib.build/module.modulemap -Xcc -fmodule-map-file=/Users/jdovey/Projects/Github/Quatermain/swift-nio-http2/.build/x86_64-apple-macosx10.10/release/CNIOHTTPParser.build/module.modulemap -Xcc -fmodule-map-file=/Users/jdovey/Projects/Github/Quatermain/swift-nio-http2/.build/x86_64-apple-macosx10.10/release/CNIOSHA1.build/module.modulemap -Xcc -fmodule-map-file=/Users/jdovey/Projects/Github/Quatermain/swift-nio-http2/.build/x86_64-apple-macosx10.10/release/CNIOAtomics.build/module.modulemap -Xcc -fmodule-map-file=/Users/jdovey/Projects/Github/Quatermain/swift-nio-http2/.build/x86_64-apple-macosx10.10/release/CNIODarwin.build/module.modulemap -Xcc -fmodule-map-file=/Users/jdovey/Projects/Github/Quatermain/swift-nio-http2/.build/x86_64-apple-macosx10.10/release/CNIOLinux.build/module.modulemap -Xcc -fmodule-map-file=/Users/jdovey/Projects/Github/Quatermain/swift-nio-http2/.build/checkouts/swift-nio-zlib-support.git-1665817388033149594/module.modulemap -Xcc -fmodule-map-file=/Users/jdovey/Projects/Github/Quatermain/swift-nio-http2/.build/checkouts/swift-nio-nghttp2-support.git-64789960024593924/module.modulemap -parse-as-library -module-name NIOHPACK -num-threads 4 -o /Users/jdovey/Projects/Github/Quatermain/swift-nio-http2/.build/x86_64-apple-macosx10.10/release/NIOHPACK.build/DynamicHeaderTable.swift.o -o /Users/jdovey/Projects/Github/Quatermain/swift-nio-http2/.build/x86_64-apple-macosx10.10/release/NIOHPACK.build/HPACKDecoder.swift.o -o /Users/jdovey/Projects/Github/Quatermain/swift-nio-http2/.build/x86_64-apple-macosx10.10/release/NIOHPACK.build/HPACKEncoder.swift.o -o /Users/jdovey/Projects/Github/Quatermain/swift-nio-http2/.build/x86_64-apple-macosx10.10/release/NIOHPACK.build/HPACKErrors.swift.o -o /Users/jdovey/Projects/Github/Quatermain/swift-nio-http2/.build/x86_64-apple-macosx10.10/release/NIOHPACK.build/HPACKHeader.swift.o -o /Users/jdovey/Projects/Github/Quatermain/swift-nio-http2/.build/x86_64-apple-macosx10.10/release/NIOHPACK.build/HeaderTables.swift.o -o /Users/jdovey/Projects/Github/Quatermain/swift-nio-http2/.build/x86_64-apple-macosx10.10/release/NIOHPACK.build/HuffmanCoding.swift.o -o /Users/jdovey/Projects/Github/Quatermain/swift-nio-http2/.build/x86_64-apple-macosx10.10/release/NIOHPACK.build/HuffmanTables.swift.o -o /Users/jdovey/Projects/Github/Quatermain/swift-nio-http2/.build/x86_64-apple-macosx10.10/release/NIOHPACK.build/IndexedHeaderTable.swift.o -o /Users/jdovey/Projects/Github/Quatermain/swift-nio-http2/.build/x86_64-apple-macosx10.10/release/NIOHPACK.build/IntegerCoding.swift.o -o /Users/jdovey/Projects/Github/Quatermain/swift-nio-http2/.build/x86_64-apple-macosx10.10/release/NIOHPACK.build/RingBufferView.swift.o -o /Users/jdovey/Projects/Github/Quatermain/swift-nio-http2/.build/x86_64-apple-macosx10.10/release/NIOHPACK.build/StaticHeaderTable.swift.o -o /Users/jdovey/Projects/Github/Quatermain/swift-nio-http2/.build/x86_64-apple-macosx10.10/release/NIOHPACK.build/StringRing.swift.o }}
{{ 1. While running pass #45148 SILFunctionTransform "SimplifyCFG" on SILFunction "@$S8NIOHPACK18DynamicHeaderTableV03addC05named5valueyx_q_tKSlRzSlR_s5UInt8V7ElementRtzAhIRt_r0_lF".}}
{{ for 'addHeader(named:value:)' at /Users/jdovey/Projects/Github/Quatermain/swift-nio-http2/Sources/NIOHPACK/DynamicHeaderTable.swift:138:14}}
{{ :0: error: unable to execute command: Segmentation fault: 11}}
{{ :0: error: compile command failed due to signal 11 (use -v to see invocation)}}
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