[llvm-bugs] [Bug 24645] New: Segmentation fault in llvm-as inside LLParser::ParseValueAsMetadata

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=24645

            Bug ID: 24645
           Summary: Segmentation fault in llvm-as inside
                    LLParser::ParseValueAsMetadata
           Product: new-bugs
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: new bugs
          Assignee: unassignedbugs at nondot.org
          Reporter: kschimpf at google.com
                CC: llvm-bugs at lists.llvm.org
    Classification: Unclassified

When you run:

echo '     !3=!    {%..d04 *asm" !6!={!H)4" ,""  ' | llvm-as - -o /dev/null

You get the following:

#0 0x667656 llvm::sys::PrintStackTrace(llvm::raw_ostream&)
(/workspace/llvm-dev/install/bin/llvm-as+0x667656)
#1 0x66796b PrintStackTraceSignalHandler(void*)
(/workspace/llvm-dev/install/bin/llvm-as+0x66796b)
#2 0x6660e7 llvm::sys::RunSignalHandlers()
(/workspace/llvm-dev/install/bin/llvm-as+0x6660e7)
#3 0x6665be SignalHandler(int)
(/workspace/llvm-dev/install/bin/llvm-as+0x6665be)
#4 0x7fd548e92340 __restore_rt (/lib/x86_64-linux-gnu/libpthread.so.0+0x10340)
#5 0x415166 llvm::Type::getSubclassData() const
(/workspace/llvm-dev/install/bin/llvm-as+0x415166)
#6 0x41555e llvm::FunctionType::isVarArg() const
(/workspace/llvm-dev/install/bin/llvm-as+0x41555e)
#7 0x5878a4 llvm::InlineAsm::Verify(llvm::FunctionType*, llvm::StringRef)
(/workspace/llvm-dev/install/bin/llvm-as+0x5878a4)
#8 0x4318c2 llvm::LLParser::ConvertValIDToValue(llvm::Type*, llvm::ValID&,
llvm::Value*&, llvm::LLParser::PerFunctionState*)
(/workspace/llvm-dev/install/bin/llvm-as+0x4318c2)
#9 0x43235a llvm::LLParser::ParseValue(llvm::Type*, llvm::Value*&,
llvm::LLParser::PerFunctionState*)
(/workspace/llvm-dev/install/bin/llvm-as+0x43235a)
#10 0x4314eb llvm::LLParser::ParseValueAsMetadata(llvm::Metadata*&, llvm::Twine
const&, llvm::LLParser::PerFunctionState*)
(/workspace/llvm-dev/install/bin/llvm-as+0x4314eb)
#11 0x4315c0 llvm::LLParser::ParseMetadata(llvm::Metadata*&,
llvm::LLParser::PerFunctionState*)
(/workspace/llvm-dev/install/bin/llvm-as+0x4315c0)
#12 0x43b109
llvm::LLParser::ParseMDNodeVector(llvm::SmallVectorImpl<llvm::Metadata*>&)
(/workspace/llvm-dev/install/bin/llvm-as+0x43b109)
#13 0x427835 llvm::LLParser::ParseMDTuple(llvm::MDNode*&, bool)
(/workspace/llvm-dev/install/bin/llvm-as+0x427835)
#14 0x41ce3e llvm::LLParser::ParseStandaloneMetadata()
(/workspace/llvm-dev/install/bin/llvm-as+0x41ce3e)
#15 0x41b3f6 llvm::LLParser::ParseTopLevelEntities()
(/workspace/llvm-dev/install/bin/llvm-as+0x41b3f6)
#16 0x41a216 llvm::LLParser::Run()
(/workspace/llvm-dev/install/bin/llvm-as+0x41a216)
#17 0x408307 llvm::parseAssemblyInto(llvm::MemoryBufferRef, llvm::Module&,
llvm::SMDiagnostic&, llvm::SlotMapping*)
(/workspace/llvm-dev/install/bin/llvm-as+0x408307)
#18 0x4083f1 llvm::parseAssembly(llvm::MemoryBufferRef, llvm::SMDiagnostic&,
llvm::LLVMContext&, llvm::SlotMapping*)
(/workspace/llvm-dev/install/bin/llvm-as+0x4083f1)
#19 0x40873c llvm::parseAssemblyFile(llvm::StringRef, llvm::SMDiagnostic&,
llvm::LLVMContext&, llvm::SlotMapping*)
(/workspace/llvm-dev/install/bin/llvm-as+0x40873c)
#20 0x4055f6 main (/workspace/llvm-dev/install/bin/llvm-as+0x4055f6)
#21 0x7fd5482beec5 __libc_start_main
/build/buildd/eglibc-2.19/csu/libc-start.c:321:0
#22 0x404579 _start (/workspace/llvm-dev/install/bin/llvm-as+0x404579)
Stack dump:
0.    Program arguments: llvm-as - -o /dev/null 
Segmentation fault

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