INFO:2026-01-02T15:49:49Z:root:pulling... From github.com:llvm/llvm-project * branch main -> FETCH_HEAD 75d4812532b0..7976ac990000 main -> origin/main Switched to branch 'main' Your branch is behind 'origin/main' by 1 commit, and can be fast-forwarded. (use "git pull" to update your local branch) HEAD is now at 7976ac990000 [clang][bytecode] Check if block is initialized before invoking destructor (#174082) INFO:2026-01-02T15:49:52Z:root:syncing... Deleted branch merge (was 0e561eb2d9b5). Switched to a new branch 'merge' branch 'merge' set up to track 'origin/main'. [merge 630d26cb6b88] [gn build] Port 7c0420dc8484 1 file changed, 1 insertion(+) [merge fe39afb56322] [gn build] Port 92f16356340d 2 files changed, 1 insertion(+), 1 deletion(-) [gn build] Port 7c0420dc8484 -- https://github.com/llvm/llvm-project/commit/7c0420dc8484 [gn build] Port 92f16356340d -- https://github.com/llvm/llvm-project/commit/92f16356340d INFO:2026-01-02T15:49:55Z:root:building ninja: Entering directory `out/gn' [0/1] Regenerating ninja files [1/461] ACTION //bolt/tools/driver:llvm-boltdiff(//llvm/utils/gn/build/toolchain:unix) [2/461] ACTION //bolt/tools/driver:perf2bolt(//llvm/utils/gn/build/toolchain:unix) [3/461] ACTION //llvm/tools/llvm-ar:llvm-lib(//llvm/utils/gn/build/toolchain:unix) [4/461] ACTION //llvm/tools/llvm-ar:llvm-ranlib(//llvm/utils/gn/build/toolchain:unix) [5/461] ACTION //llvm/tools/llvm-ar:llvm-dlltool(//llvm/utils/gn/build/toolchain:unix) [6/461] LINK obj/llvm/unittests/CGData/CodeGenDataTests [7/461] LINK obj/llvm/unittests/DebugInfo/GSYM/DebugInfoGSYMTests [8/461] LINK ./bin/llvm-xray [9/461] LINK obj/llvm/unittests/ExecutionEngine/JITLink/JITLinkTests [10/461] LINK obj/llvm/unittests/MC/MCTests [11/461] LINK ./bin/llvm-rtdyld [12/461] LINK obj/llvm/unittests/Target/AArch64/AArch64Tests [13/461] LINK obj/llvm/unittests/tools/llvm-exegesis/AArch64/LLVMExegesisAArch64Tests [14/461] LINK obj/llvm/unittests/Passes/PassBuilderBindings/PassesBindingsTests [15/461] LINK obj/lld/unittests/AsLibELF/LLDAsLibELFTests FAILED: obj/lld/unittests/AsLibELF/LLDAsLibELFTests ../../../chrome/src/third_party/llvm-build/Release+Asserts/bin/clang++ -Wl,--color-diagnostics -fuse-ld=lld -o obj/lld/unittests/AsLibELF/LLDAsLibELFTests -Wl,--start-group obj/lld/unittests/AsLibELF/LLDAsLibELFTests.ROCm.o obj/lld/unittests/AsLibELF/LLDAsLibELFTests.SomeDrivers.o obj/third-party/unittest/UnitTestMain/UnitTestMain.TestMain.o lib/liblldCommon.a lib/liblldELF.a lib/libLLVMCodeGen.a lib/libLLVMAnalysis.a lib/libLLVMBinaryFormat.a lib/libLLVMSupport.a lib/libLLVMSupportBlake3.a lib/libLLVMDemangle.a lib/libLLVMTargetParser.a lib/libLLVMFrontendHLSL.a lib/libLLVMCore.a lib/libLLVMRemarks.a lib/libLLVMBitstreamReader.a lib/libLLVMProfileData.a lib/libLLVMDebugInfoDWARF.a lib/libLLVMDebugInfoDWARFLowLevel.a lib/libLLVMMC.a lib/libLLVMDebugInfoCodeView.a lib/libLLVMDebugInfoMSF.a lib/libLLVMObject.a lib/libLLVMBitReader.a lib/libLLVMIRReader.a lib/libLLVMAsmParser.a lib/libLLVMMCParser.a lib/libLLVMTextAPI.a lib/libLLVMSymbolize.a lib/libLLVMDebugInfoBTF.a lib/libLLVMDebugInfoGSYM.a lib/libLLVMDebugInfoPDB.a lib/libLLVMBitWriter.a lib/libLLVMTransformUtils.a lib/libLLVMCGData.a lib/libLLVMCodeGenTypes.a lib/libLLVMTarget.a lib/libLLVMObjCARCOpts.a lib/libLLVMScalarOpts.a lib/libLLVMAggressiveInstCombine.a lib/libLLVMInstCombine.a lib/libLLVMOption.a lib/libLLVMLTO.a lib/libLLVMExtensions.a lib/libLLVMLinker.a lib/libLLVMPasses.a lib/libLLVMGlobalISel.a lib/libLLVMIRPrinter.a lib/libLLVMCFGuard.a lib/libLLVMCoroutines.a lib/libLLVMipo.a lib/libLLVMFrontendOpenMP.a lib/libLLVMFrontendAtomic.a lib/libLLVMFrontendOffloading.a lib/libLLVMObjectYAML.a lib/libLLVMInstrumentation.a lib/libLLVMVectorize.a lib/libLLVMSandboxIR.a lib/libLLVMHipStdPar.a lib/libLLVMPlugins.a lib/libLLVMAArch64CodeGen.a lib/libLLVMAArch64Desc.a lib/libLLVMAArch64Info.a lib/libLLVMAArch64Utils.a lib/libLLVMAsmPrinter.a lib/libLLVMSelectionDAG.a lib/libLLVMAArch64AsmParser.a lib/libLLVMAArch64Disassembler.a lib/libLLVMMCDisassembler.a lib/libLLVMAMDGPUCodeGen.a lib/libLLVMAMDGPUDesc.a lib/libLLVMAMDGPUInfo.a lib/libLLVMAMDGPUUtils.a lib/libLLVMMIRParser.a lib/libLLVMAMDGPUAsmParser.a lib/libLLVMAMDGPUDisassembler.a lib/libLLVMAMDGPUTargetMCA.a lib/libLLVMARMCodeGen.a lib/libLLVMARMDesc.a lib/libLLVMARMInfo.a lib/libLLVMARMUtils.a lib/libLLVMARMAsmParser.a lib/libLLVMARMDisassembler.a lib/libLLVMAVRCodeGen.a lib/libLLVMAVRDesc.a lib/libLLVMAVRInfo.a lib/libLLVMAVRAsmParser.a lib/libLLVMAVRDisassembler.a lib/libLLVMBPFCodeGen.a lib/libLLVMBPFDesc.a lib/libLLVMBPFInfo.a lib/libLLVMBPFAsmParser.a lib/libLLVMBPFDisassembler.a lib/libLLVMHexagonCodeGen.a lib/libLLVMHexagonDesc.a lib/libLLVMHexagonInfo.a lib/libLLVMHexagonAsmParser.a lib/libLLVMHexagonDisassembler.a lib/libLLVMLanaiCodeGen.a lib/libLLVMLanaiDesc.a lib/libLLVMLanaiInfo.a lib/libLLVMLanaiAsmParser.a lib/libLLVMLanaiDisassembler.a lib/libLLVMLoongArchCodeGen.a lib/libLLVMLoongArchDesc.a lib/libLLVMLoongArchInfo.a lib/libLLVMLoongArchAsmParser.a lib/libLLVMLoongArchDisassembler.a lib/libLLVMMipsCodeGen.a lib/libLLVMMipsDesc.a lib/libLLVMMipsInfo.a lib/libLLVMMipsAsmParser.a lib/libLLVMMipsDisassembler.a lib/libLLVMNVPTXCodeGen.a lib/libLLVMNVPTXDesc.a lib/libLLVMNVPTXInfo.a lib/libLLVMPowerPCCodeGen.a lib/libLLVMPowerPCDesc.a lib/libLLVMPowerPCInfo.a lib/libLLVMPowerPCAsmParser.a lib/libLLVMPowerPCDisassembler.a lib/libLLVMRISCVCodeGen.a lib/libLLVMRISCVDesc.a lib/libLLVMRISCVInfo.a lib/libLLVMRISCVAsmParser.a lib/libLLVMRISCVDisassembler.a lib/libLLVMTargetRISCVMCA.a lib/libLLVMMCA.a lib/libLLVMSparcCodeGen.a lib/libLLVMSparcDesc.a lib/libLLVMSparcInfo.a lib/libLLVMSparcAsmParser.a lib/libLLVMSparcDisassembler.a lib/libLLVMSystemZCodeGen.a lib/libLLVMSystemZDesc.a lib/libLLVMSystemZInfo.a lib/libLLVMSystemZAsmParser.a lib/libLLVMSystemZDisassembler.a lib/libLLVMWebAssemblyCodeGen.a lib/libLLVMWebAssemblyDesc.a lib/libLLVMWebAssemblyInfo.a lib/libLLVMWebAssemblyUtils.a lib/libLLVMWebAssemblyAsmParser.a lib/libLLVMWebAssemblyDisassembler.a lib/libLLVMX86CodeGen.a lib/libLLVMX86Desc.a lib/libLLVMX86Info.a lib/libLLVMX86AsmParser.a lib/libLLVMX86Disassembler.a lib/libLLVMTargetX86MCA.a lib/libgtest.a -Wl,--end-group -ldl -lpthread -lz ld.lld: error: undefined symbol: vtable for llvm::lto::DTLTO >>> referenced by LTO.cpp >>> ../obj/lld/ELF/ELF.LTO.o:(lld::elf::BitcodeCompiler::BitcodeCompiler(lld::elf::Ctx&)) in archive lib/liblldELF.a >>> the vtable symbol may be undefined because the class is missing its key function (see https://lld.llvm.org/missingkeyfunction) clang++: error: linker command failed with exit code 1 (use -v to see invocation) [16/461] LINK ./bin/lld FAILED: bin/lld ../../../chrome/src/third_party/llvm-build/Release+Asserts/bin/clang++ -Wl,--color-diagnostics -fuse-ld=lld -o ./bin/lld -Wl,--start-group obj/lld/tools/lld/lld.lld.o obj/BUILD_DIR/gen/lld/tools/lld/lld.lld-driver.o lib/liblldCOFF.a lib/liblldELF.a lib/liblldMachO.a lib/liblldMinGW.a lib/liblldWasm.a lib/libLLVMSupport.a lib/libLLVMTargetParser.a lib/liblldCommon.a lib/libLLVMCodeGen.a lib/libLLVMAnalysis.a lib/libLLVMBinaryFormat.a lib/libLLVMSupportBlake3.a lib/libLLVMDemangle.a lib/libLLVMFrontendHLSL.a lib/libLLVMCore.a lib/libLLVMRemarks.a lib/libLLVMBitstreamReader.a lib/libLLVMProfileData.a lib/libLLVMDebugInfoDWARF.a lib/libLLVMDebugInfoDWARFLowLevel.a lib/libLLVMMC.a lib/libLLVMDebugInfoCodeView.a lib/libLLVMDebugInfoMSF.a lib/libLLVMObject.a lib/libLLVMBitReader.a lib/libLLVMIRReader.a lib/libLLVMAsmParser.a lib/libLLVMMCParser.a lib/libLLVMTextAPI.a lib/libLLVMSymbolize.a lib/libLLVMDebugInfoBTF.a lib/libLLVMDebugInfoGSYM.a lib/libLLVMDebugInfoPDB.a lib/libLLVMBitWriter.a lib/libLLVMTransformUtils.a lib/libLLVMCGData.a lib/libLLVMCodeGenTypes.a lib/libLLVMTarget.a lib/libLLVMObjCARCOpts.a lib/libLLVMScalarOpts.a lib/libLLVMAggressiveInstCombine.a lib/libLLVMInstCombine.a lib/libLLVMOption.a lib/libLLVMLTO.a lib/libLLVMExtensions.a lib/libLLVMLinker.a lib/libLLVMPasses.a lib/libLLVMGlobalISel.a lib/libLLVMIRPrinter.a lib/libLLVMCFGuard.a lib/libLLVMCoroutines.a lib/libLLVMipo.a lib/libLLVMFrontendOpenMP.a lib/libLLVMFrontendAtomic.a lib/libLLVMFrontendOffloading.a lib/libLLVMObjectYAML.a lib/libLLVMInstrumentation.a lib/libLLVMVectorize.a lib/libLLVMSandboxIR.a lib/libLLVMHipStdPar.a lib/libLLVMPlugins.a lib/libLLVMAArch64CodeGen.a lib/libLLVMAArch64Desc.a lib/libLLVMAArch64Info.a lib/libLLVMAArch64Utils.a lib/libLLVMAsmPrinter.a lib/libLLVMSelectionDAG.a lib/libLLVMAArch64AsmParser.a lib/libLLVMAArch64Disassembler.a lib/libLLVMMCDisassembler.a lib/libLLVMAMDGPUCodeGen.a lib/libLLVMAMDGPUDesc.a lib/libLLVMAMDGPUInfo.a lib/libLLVMAMDGPUUtils.a lib/libLLVMMIRParser.a lib/libLLVMAMDGPUAsmParser.a lib/libLLVMAMDGPUDisassembler.a lib/libLLVMAMDGPUTargetMCA.a lib/libLLVMARMCodeGen.a lib/libLLVMARMDesc.a lib/libLLVMARMInfo.a lib/libLLVMARMUtils.a lib/libLLVMARMAsmParser.a lib/libLLVMARMDisassembler.a lib/libLLVMAVRCodeGen.a lib/libLLVMAVRDesc.a lib/libLLVMAVRInfo.a lib/libLLVMAVRAsmParser.a lib/libLLVMAVRDisassembler.a lib/libLLVMBPFCodeGen.a lib/libLLVMBPFDesc.a lib/libLLVMBPFInfo.a lib/libLLVMBPFAsmParser.a lib/libLLVMBPFDisassembler.a lib/libLLVMHexagonCodeGen.a lib/libLLVMHexagonDesc.a lib/libLLVMHexagonInfo.a lib/libLLVMHexagonAsmParser.a lib/libLLVMHexagonDisassembler.a lib/libLLVMLanaiCodeGen.a lib/libLLVMLanaiDesc.a lib/libLLVMLanaiInfo.a lib/libLLVMLanaiAsmParser.a lib/libLLVMLanaiDisassembler.a lib/libLLVMLoongArchCodeGen.a lib/libLLVMLoongArchDesc.a lib/libLLVMLoongArchInfo.a lib/libLLVMLoongArchAsmParser.a lib/libLLVMLoongArchDisassembler.a lib/libLLVMMipsCodeGen.a lib/libLLVMMipsDesc.a lib/libLLVMMipsInfo.a lib/libLLVMMipsAsmParser.a lib/libLLVMMipsDisassembler.a lib/libLLVMNVPTXCodeGen.a lib/libLLVMNVPTXDesc.a lib/libLLVMNVPTXInfo.a lib/libLLVMPowerPCCodeGen.a lib/libLLVMPowerPCDesc.a lib/libLLVMPowerPCInfo.a lib/libLLVMPowerPCAsmParser.a lib/libLLVMPowerPCDisassembler.a lib/libLLVMRISCVCodeGen.a lib/libLLVMRISCVDesc.a lib/libLLVMRISCVInfo.a lib/libLLVMRISCVAsmParser.a lib/libLLVMRISCVDisassembler.a lib/libLLVMTargetRISCVMCA.a lib/libLLVMMCA.a lib/libLLVMSparcCodeGen.a lib/libLLVMSparcDesc.a lib/libLLVMSparcInfo.a lib/libLLVMSparcAsmParser.a lib/libLLVMSparcDisassembler.a lib/libLLVMSystemZCodeGen.a lib/libLLVMSystemZDesc.a lib/libLLVMSystemZInfo.a lib/libLLVMSystemZAsmParser.a lib/libLLVMSystemZDisassembler.a lib/libLLVMWebAssemblyCodeGen.a lib/libLLVMWebAssemblyDesc.a lib/libLLVMWebAssemblyInfo.a lib/libLLVMWebAssemblyUtils.a lib/libLLVMWebAssemblyAsmParser.a lib/libLLVMWebAssemblyDisassembler.a lib/libLLVMX86CodeGen.a lib/libLLVMX86Desc.a lib/libLLVMX86Info.a lib/libLLVMX86AsmParser.a lib/libLLVMX86Disassembler.a lib/libLLVMTargetX86MCA.a lib/libLLVMLibDriver.a lib/libLLVMWindowsDriver.a lib/libLLVMWindowsManifest.a -Wl,--end-group -ldl -lpthread -lz -lxml2 ld.lld: error: undefined symbol: vtable for llvm::lto::DTLTO >>> referenced by LTO.cpp >>> ../obj/lld/COFF/COFF.LTO.o:(lld::coff::BitcodeCompiler::BitcodeCompiler(lld::coff::COFFLinkerContext&)) in archive lib/liblldCOFF.a >>> referenced by LTO.cpp >>> ../obj/lld/ELF/ELF.LTO.o:(lld::elf::BitcodeCompiler::BitcodeCompiler(lld::elf::Ctx&)) in archive lib/liblldELF.a >>> the vtable symbol may be undefined because the class is missing its key function (see https://lld.llvm.org/missingkeyfunction) clang++: error: linker command failed with exit code 1 (use -v to see invocation) [17/461] LINK obj/lld/unittests/AsLibAll/LLDAsLibAllTests FAILED: obj/lld/unittests/AsLibAll/LLDAsLibAllTests ../../../chrome/src/third_party/llvm-build/Release+Asserts/bin/clang++ -Wl,--color-diagnostics -fuse-ld=lld -o obj/lld/unittests/AsLibAll/LLDAsLibAllTests -Wl,--start-group obj/lld/unittests/AsLibAll/LLDAsLibAllTests.AllDrivers.o obj/third-party/unittest/UnitTestMain/UnitTestMain.TestMain.o lib/liblldCOFF.a lib/liblldCommon.a lib/liblldELF.a lib/liblldMachO.a lib/liblldMinGW.a lib/liblldWasm.a lib/libLLVMCodeGen.a lib/libLLVMAnalysis.a lib/libLLVMBinaryFormat.a lib/libLLVMSupport.a lib/libLLVMSupportBlake3.a lib/libLLVMDemangle.a lib/libLLVMTargetParser.a lib/libLLVMFrontendHLSL.a lib/libLLVMCore.a lib/libLLVMRemarks.a lib/libLLVMBitstreamReader.a lib/libLLVMProfileData.a lib/libLLVMDebugInfoDWARF.a lib/libLLVMDebugInfoDWARFLowLevel.a lib/libLLVMMC.a lib/libLLVMDebugInfoCodeView.a lib/libLLVMDebugInfoMSF.a lib/libLLVMObject.a lib/libLLVMBitReader.a lib/libLLVMIRReader.a lib/libLLVMAsmParser.a lib/libLLVMMCParser.a lib/libLLVMTextAPI.a lib/libLLVMSymbolize.a lib/libLLVMDebugInfoBTF.a lib/libLLVMDebugInfoGSYM.a lib/libLLVMDebugInfoPDB.a lib/libLLVMBitWriter.a lib/libLLVMTransformUtils.a lib/libLLVMCGData.a lib/libLLVMCodeGenTypes.a lib/libLLVMTarget.a lib/libLLVMObjCARCOpts.a lib/libLLVMScalarOpts.a lib/libLLVMAggressiveInstCombine.a lib/libLLVMInstCombine.a lib/libLLVMOption.a lib/libLLVMLTO.a lib/libLLVMExtensions.a lib/libLLVMLinker.a lib/libLLVMPasses.a lib/libLLVMGlobalISel.a lib/libLLVMIRPrinter.a lib/libLLVMCFGuard.a lib/libLLVMCoroutines.a lib/libLLVMipo.a lib/libLLVMFrontendOpenMP.a lib/libLLVMFrontendAtomic.a lib/libLLVMFrontendOffloading.a lib/libLLVMObjectYAML.a lib/libLLVMInstrumentation.a lib/libLLVMVectorize.a lib/libLLVMSandboxIR.a lib/libLLVMHipStdPar.a lib/libLLVMPlugins.a lib/libLLVMAArch64CodeGen.a lib/libLLVMAArch64Desc.a lib/libLLVMAArch64Info.a lib/libLLVMAArch64Utils.a lib/libLLVMAsmPrinter.a lib/libLLVMSelectionDAG.a lib/libLLVMAArch64AsmParser.a lib/libLLVMAArch64Disassembler.a lib/libLLVMMCDisassembler.a lib/libLLVMAMDGPUCodeGen.a lib/libLLVMAMDGPUDesc.a lib/libLLVMAMDGPUInfo.a lib/libLLVMAMDGPUUtils.a lib/libLLVMMIRParser.a lib/libLLVMAMDGPUAsmParser.a lib/libLLVMAMDGPUDisassembler.a lib/libLLVMAMDGPUTargetMCA.a lib/libLLVMARMCodeGen.a lib/libLLVMARMDesc.a lib/libLLVMARMInfo.a lib/libLLVMARMUtils.a lib/libLLVMARMAsmParser.a lib/libLLVMARMDisassembler.a lib/libLLVMAVRCodeGen.a lib/libLLVMAVRDesc.a lib/libLLVMAVRInfo.a lib/libLLVMAVRAsmParser.a lib/libLLVMAVRDisassembler.a lib/libLLVMBPFCodeGen.a lib/libLLVMBPFDesc.a lib/libLLVMBPFInfo.a lib/libLLVMBPFAsmParser.a lib/libLLVMBPFDisassembler.a lib/libLLVMHexagonCodeGen.a lib/libLLVMHexagonDesc.a lib/libLLVMHexagonInfo.a lib/libLLVMHexagonAsmParser.a lib/libLLVMHexagonDisassembler.a lib/libLLVMLanaiCodeGen.a lib/libLLVMLanaiDesc.a lib/libLLVMLanaiInfo.a lib/libLLVMLanaiAsmParser.a lib/libLLVMLanaiDisassembler.a lib/libLLVMLoongArchCodeGen.a lib/libLLVMLoongArchDesc.a lib/libLLVMLoongArchInfo.a lib/libLLVMLoongArchAsmParser.a lib/libLLVMLoongArchDisassembler.a lib/libLLVMMipsCodeGen.a lib/libLLVMMipsDesc.a lib/libLLVMMipsInfo.a lib/libLLVMMipsAsmParser.a lib/libLLVMMipsDisassembler.a lib/libLLVMNVPTXCodeGen.a lib/libLLVMNVPTXDesc.a lib/libLLVMNVPTXInfo.a lib/libLLVMPowerPCCodeGen.a lib/libLLVMPowerPCDesc.a lib/libLLVMPowerPCInfo.a lib/libLLVMPowerPCAsmParser.a lib/libLLVMPowerPCDisassembler.a lib/libLLVMRISCVCodeGen.a lib/libLLVMRISCVDesc.a lib/libLLVMRISCVInfo.a lib/libLLVMRISCVAsmParser.a lib/libLLVMRISCVDisassembler.a lib/libLLVMTargetRISCVMCA.a lib/libLLVMMCA.a lib/libLLVMSparcCodeGen.a lib/libLLVMSparcDesc.a lib/libLLVMSparcInfo.a lib/libLLVMSparcAsmParser.a lib/libLLVMSparcDisassembler.a lib/libLLVMSystemZCodeGen.a lib/libLLVMSystemZDesc.a lib/libLLVMSystemZInfo.a lib/libLLVMSystemZAsmParser.a lib/libLLVMSystemZDisassembler.a lib/libLLVMWebAssemblyCodeGen.a lib/libLLVMWebAssemblyDesc.a lib/libLLVMWebAssemblyInfo.a lib/libLLVMWebAssemblyUtils.a lib/libLLVMWebAssemblyAsmParser.a lib/libLLVMWebAssemblyDisassembler.a lib/libLLVMX86CodeGen.a lib/libLLVMX86Desc.a lib/libLLVMX86Info.a lib/libLLVMX86AsmParser.a lib/libLLVMX86Disassembler.a lib/libLLVMTargetX86MCA.a lib/libLLVMLibDriver.a lib/libLLVMWindowsDriver.a lib/libLLVMWindowsManifest.a lib/libgtest.a -Wl,--end-group -ldl -lpthread -lz -lxml2 ld.lld: error: undefined symbol: vtable for llvm::lto::DTLTO >>> referenced by LTO.cpp >>> ../obj/lld/ELF/ELF.LTO.o:(lld::elf::BitcodeCompiler::BitcodeCompiler(lld::elf::Ctx&)) in archive lib/liblldELF.a >>> referenced by LTO.cpp >>> ../obj/lld/COFF/COFF.LTO.o:(lld::coff::BitcodeCompiler::BitcodeCompiler(lld::coff::COFFLinkerContext&)) in archive lib/liblldCOFF.a >>> the vtable symbol may be undefined because the class is missing its key function (see https://lld.llvm.org/missingkeyfunction) clang++: error: linker command failed with exit code 1 (use -v to see invocation) [18/461] LINK obj/llvm/unittests/MI/MITests [19/461] LINK ./bin/llvm-opt-fuzzer [20/461] LINK obj/llvm/unittests/CodeGen/GlobalISel/GlobalISelTests [21/461] LINK ./bin/opt [22/461] LINK obj/llvm/unittests/Target/TargetMachineCTests [23/461] LINK obj/llvm/unittests/CodeGen/CodeGenTests [24/461] LINK obj/llvm/unittests/MIR/MIRTests [25/461] LINK ./bin/llvm-reduce [26/461] LINK obj/llvm/unittests/DebugInfo/DWARF/DebugInfoDWARFTests [27/461] LINK obj/llvm/unittests/DebugInfo/LogicalView/DebugInfoLogicalViewTests [28/461] LINK ./bin/llvm-split [29/461] SOLINK ./lib/libLTO.so [30/461] CXX obj/clang/lib/AST/ByteCode/AST.Compiler.o ninja: build stopped: subcommand failed. Command '['ninja', '-C', 'out/gn']' returned non-zero exit status 1.