[llvm-bugs] [Bug 32977] New: Assertion `V.Var == Var && "conflicting variable"' failed.

via llvm-bugs llvm-bugs at lists.llvm.org
Tue May 9 07:47:08 PDT 2017 

https://bugs.llvm.org/show_bug.cgi?id=32977

            Bug ID: 32977
           Summary: Assertion `V.Var == Var && "conflicting variable"'
                    failed.
           Product: new-bugs
           Version: 4.0
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: new bugs
          Assignee: unassignedbugs at nondot.org
          Reporter: hans at chromium.org
                CC: llvm-bugs at lists.llvm.org

Hitting this assert in a Chromium build on Linux with tip-of-tree Clang:

[1/1] CXX obj/base/allocator/tcmalloc/thread_cache.o
FAILED: obj/base/allocator/tcmalloc/thread_cache.o 
../../../../../../../../work/llvm/build.release/bin/clang++ -MMD -MF
obj/base/allocator/tcmalloc/thread_cache.o.d -DNO_HEAP_CHECK
-DV8_DEPRECATION_WARNINGS -DUSE_UDEV -DUSE_AURA=1 -DUSE_PANGO=1 -DUSE_CAIRO=1
-DUSE_GLIB=1 -DUSE_NSS_CERTS=1 -DUSE_X11=1 -DFULL_SAFE_BROWSING
 -DSAFE_BROWSING_CSD -DSAFE_BROWSING_DB_LOCAL -DCHROMIUM_BUILD
-DFIELDTRIAL_TESTING_ENABLED -DCR_CLANG_REVISION=\"298540\"
-D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
-DCOMPONENT_BUILD -DNDEBUG -DNVALGRIND -DDYNAMIC_ANNOTATIONS_ENABLED=0
-DTCMALLOC_D
ONT_REPLACE_SYSTEM_ALLOC -I../../base/allocator
-I../../third_party/tcmalloc/chromium/src/base
-I../../third_party/tcmalloc/chromium/src -I../.. -Igen -fno-strict-aliasing
--param=ssp-buffer-size=4 -fstack-protector -Wno-builtin-macro-redefined
-D__DATE__= -D__TIME__= -D
__TIMESTAMP__= -funwind-tables -fPIC -pipe
-B../../third_party/binutils/Linux_x64/Release/bin -fcolor-diagnostics -m64
-march=x86-64 -pthread -fomit-frame-pointer -g2
--sysroot=../../build/linux/debian_jessie_amd64-sysroot -fvisibility=hidden
-Wheader-hygiene -Wstring-co
nversion -Wtautological-overlap-compare -Werror -Wall -Wno-unused-variable
-Wno-missing-field-initializers -Wno-unused-parameter -Wno-c++11-narrowing
-Wno-covered-switch-default -Wno-unneeded-internal-declaration
-Wno-inconsistent-missing-override -Wno-undefined-var-temp
late -Wno-nonportable-include-path -Wno-address-of-packed-member
-Wno-unused-lambda-capture -Wno-user-defined-warnings -Wno-reorder
-Wno-unused-function -Wno-unused-local-typedefs -Wno-unused-private-field
-Wno-sign-compare -Wno-unused-result -O2 -fno-ident -fdata-sectio
ns -ffunction-sections -fvisibility-inlines-hidden -std=gnu++11 -fno-rtti
-fno-exceptions -Wno-deprecated -c
../../third_party/tcmalloc/chromium/src/thread_cache.cc -o
obj/base/allocator/tcmalloc/thread_cache.o
clang-4.0: ../lib/CodeGen/AsmPrinter/DwarfDebug.h:131: void
llvm::DbgVariable::addMMIEntry(const llvm::DbgVariable&): Assertion `V.Var ==
Var && "conflicting variable"' failed.
#0 0x0000000001f4322a llvm::sys::PrintStackTrace(llvm::raw_ostream&)
(/usr/local/google/work/llvm/build.release/bin/clang-4.0+0x1f4322a)
#1 0x0000000001f4123e llvm::sys::RunSignalHandlers()
(/usr/local/google/work/llvm/build.release/bin/clang-4.0+0x1f4123e)
#2 0x0000000001f413a2 SignalHandler(int)
(/usr/local/google/work/llvm/build.release/bin/clang-4.0+0x1f413a2)
#3 0x00007f686f8c8330 __restore_rt
(/lib/x86_64-linux-gnu/libpthread.so.0+0x10330)
#4 0x00007f686e6b9c37 gsignal
/build/eglibc-MjiXCM/eglibc-2.19/signal/../nptl/sysdeps/unix/sysv/linux/raise.c:56:0
#5 0x00007f686e6bd028 abort
/build/eglibc-MjiXCM/eglibc-2.19/stdlib/abort.c:91:0
#6 0x00007f686e6b2bf6 __assert_fail_base
/build/eglibc-MjiXCM/eglibc-2.19/assert/assert.c:92:0
#7 0x00007f686e6b2ca2 (/lib/x86_64-linux-gnu/libc.so.6+0x2fca2)
#8 0x00000000024fd43a llvm::DwarfFile::addScopeVariable(llvm::LexicalScope*,
llvm::DbgVariable*)
(/usr/local/google/work/llvm/build.release/bin/clang-4.0+0x24fd43a)
#9 0x00000000024f3852
llvm::DwarfDebug::createAbstractVariable(llvm::DILocalVariable const*,
llvm::LexicalScope*)
(/usr/local/google/work/llvm/build.release/bin/clang-4.0+0x24f3852)
#10 0x00000000024f3a93
llvm::DwarfDebug::ensureAbstractVariableIsCreated(std::pair<llvm::DILocalVariable
const*, llvm::DILocation const*>, llvm::MDNode const*)
(/usr/local/google/work/llvm/build.release/bin/clang-4.0+0x24f3a93)
#11 0x00000000024f51e5 llvm::DwarfDebug::endFunctionImpl(llvm::MachineFunction
const*) (/usr/local/google/work/llvm/build.release/bin/clang-4.0+0x24f51e5)
#12 0x0000000002528448
llvm::DebugHandlerBase::endFunction(llvm::MachineFunction const*)
(/usr/local/google/work/llvm/build.release/bin/clang-4.0+0x2528448)
#13 0x00000000024d6159 llvm::AsmPrinter::EmitFunctionBody()
(/usr/local/google/work/llvm/build.release/bin/clang-4.0+0x24d6159)
#14 0x0000000001407d40
llvm::X86AsmPrinter::runOnMachineFunction(llvm::MachineFunction&)
(/usr/local/google/work/llvm/build.release/bin/clang-4.0+0x1407d40)
#15 0x0000000001846da5
llvm::MachineFunctionPass::runOnFunction(llvm::Function&)
(/usr/local/google/work/llvm/build.release/bin/clang-4.0+0x1846da5)
#16 0x0000000001b19c33 llvm::FPPassManager::runOnFunction(llvm::Function&)
(/usr/local/google/work/llvm/build.release/bin/clang-4.0+0x1b19c33)
#17 0x0000000001b19cdc llvm::FPPassManager::runOnModule(llvm::Module&)
(/usr/local/google/work/llvm/build.release/bin/clang-4.0+0x1b19cdc)
#18 0x0000000001b1aa3f llvm::legacy::PassManagerImpl::run(llvm::Module&)
(/usr/local/google/work/llvm/build.release/bin/clang-4.0+0x1b1aa3f)
#19 0x00000000020c67fe (anonymous
namespace)::EmitAssemblyHelper::EmitAssembly(clang::BackendAction,
std::unique_ptr<llvm::raw_pwrite_stream,
std::default_delete<llvm::raw_pwrite_stream> >)
(/usr/local/google/work/llvm/build.release/bin/clang-4.0+0x20c67fe)
#20 0x00000000020c7b59 clang::EmitBackendOutput(clang::DiagnosticsEngine&,
clang::HeaderSearchOptions const&, clang::CodeGenOptions const&,
clang::TargetOptions const&, clang::LangOptions const&, llvm::DataLayout
const&, llvm::Module*, clang::BackendAction, std::unique_p
tr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream> >)
(/usr/local/google/work/llvm/build.release/bin/clang-4.0+0x20c7b59)
#21 0x0000000002740b6b
clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&)
(/usr/local/google/work/llvm/build.release/bin/clang-4.0+0x2740b6b)
#22 0x0000000002b2ace2 clang::ParseAST(clang::Sema&, bool, bool)
(/usr/local/google/work/llvm/build.release/bin/clang-4.0+0x2b2ace2)
#23 0x000000000274023f clang::CodeGenAction::ExecuteAction()
(/usr/local/google/work/llvm/build.release/bin/clang-4.0+0x274023f)
#24 0x000000000243ec76 clang::FrontendAction::Execute()
(/usr/local/google/work/llvm/build.release/bin/clang-4.0+0x243ec76)
#25 0x0000000002418b16
clang::CompilerInstance::ExecuteAction(clang::FrontendAction&)
(/usr/local/google/work/llvm/build.release/bin/clang-4.0+0x2418b16)
#26 0x00000000024c92f4
clang::ExecuteCompilerInvocation(clang::CompilerInstance*)
(/usr/local/google/work/llvm/build.release/bin/clang-4.0+0x24c92f4)

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