[LLVMbugs] [Bug 23166] New: Segmentation fault in llvm-symbolizer on missing compile units

[bugzilla-daemon at llvm.org]

https://llvm.org/bugs/show_bug.cgi?id=23166

            Bug ID: 23166
           Summary: Segmentation fault in llvm-symbolizer on missing
                    compile units
           Product: new-bugs
           Version: 3.6
          Hardware: Macintosh
                OS: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: new bugs
          Assignee: unassignedbugs at nondot.org
          Reporter: me at cirw.in
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

0  llvm-symbolizer          0x00000001064f6839
llvm::sys::PrintStackTrace(__sFILE*) + 57
1  llvm-symbolizer          0x00000001064f6f9b SignalHandler(int) + 635
2  libsystem_platform.dylib 0x00007fff93515f1a _sigtramp + 26
3  libsystem_platform.dylib 0x000000000005d12a _sigtramp + 1823765034
4  llvm-symbolizer          0x00000001063c2530
llvm::DWARFUnit::collectAddressRanges(std::__1::vector<std::__1::pair<unsigned
long long, unsigned long long>, std::__1::allocator<std::__1::pair<unsigned
long long, unsigned long long> > >&) + 64
5  llvm-symbolizer          0x00000001063b21f1
llvm::DWARFDebugAranges::generate(llvm::DWARFContext*) + 257
6  llvm-symbolizer          0x00000001063aaf43
llvm::DWARFContext::getCompileUnitForAddress(unsigned long long) + 195
7  llvm-symbolizer          0x00000001063ab6fc
llvm::DWARFContext::getInliningInfoForAddress(unsigned long long,
llvm::DILineInfoSpecifier) + 92
8  llvm-symbolizer          0x000000010639ddd4
llvm::symbolize::ModuleInfo::symbolizeInlinedCode(unsigned long long,
llvm::symbolize::LLVMSymbolizer::Options const&) const + 132
9  llvm-symbolizer          0x000000010639e224
llvm::symbolize::LLVMSymbolizer::symbolizeCode(std::__1::basic_string<char,
std::__1::char_traits<char>, std::__1::allocator<char> > const&, unsigned long
long) + 116
10 llvm-symbolizer          0x00000001063a4865 main + 1525
11 libdyld.dylib            0x00007fff96ae45c9 start + 1
Stack dump:
0.    Program arguments: ./llvm/Release+Asserts/bin/llvm-symbolizer
-obj=segfaulty
[1]    32676 done                echo 0xb6f74 |
       32677 segmentation fault  ./llvm/Release+Asserts/bin/llvm-symbolizer
-obj=segfaulty

If you run llvm-dwarfdump on this file you get an assertion failure, which
seems reasonable:

Assertion failed: (CU && "Null Compile Unit?"), function dump, file
DWARFCompileUnit.cpp, line 26.
0  llvm-dwarfdump           0x00000001033978a9
llvm::sys::PrintStackTrace(__sFILE*) + 57
1  llvm-dwarfdump           0x000000010339800b SignalHandler(int) + 635
2  libsystem_platform.dylib 0x00007fff93515f1a _sigtramp + 26
3  llvm-dwarfdump           0x00000001033ba69d nuls + 3413
4  llvm-dwarfdump           0x0000000103397d76 abort + 22
5  llvm-dwarfdump           0x0000000103397d51 __assert_rtn + 81
6  llvm-dwarfdump           0x000000010334bc05
llvm::DWARFCompileUnit::dump(llvm::raw_ostream&) + 885
7  llvm-dwarfdump           0x000000010334be2b
llvm::DWARFContext::dump(llvm::raw_ostream&, llvm::DIDumpType) + 475
8  llvm-dwarfdump           0x00000001033488bb main + 1195
9  libdyld.dylib            0x00007fff96ae45c9 start + 1
10 libdyld.dylib            0x0000000000000002 start + 1766963770
Stack dump:
0.    Program arguments: ./llvm/Release+Asserts/bin/llvm-dwarfdump segfaulty
[1]    32568 illegal hardware instruction 
./llvm/Release+Asserts/bin/llvm-dwarfdump segfaulty > /dev/null

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