[llvm-bugs] [Bug 36514] New: Segfault in llvm::object::MachOObjectFile::getSectionName

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=36514

            Bug ID: 36514
           Summary: Segfault in
                    llvm::object::MachOObjectFile::getSectionName
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Object
          Assignee: unassignedbugs at nondot.org
          Reporter: jdevlieghere at apple.com
                CC: llvm-bugs at lists.llvm.org

Created attachment 19954
  --> https://bugs.llvm.org/attachment.cgi?id=19954&action=edit
reproducer

$ llvm-objdump -r sibling.o

sibling.o:      file format Mach-O 32-bit ppc

RELOCATION RECORDS FOR [__DWARF,__debug_info]:
0  llvm-objdump             0x0000000105918955 PrintStackTrace(void*) + 37
1  llvm-objdump             0x0000000105918d84 SignalHandler(int) + 468
2  libsystem_platform.dylib 0x00007fff5a3c1f5a _sigtramp + 26
3  libsystem_platform.dylib 0x00000001066042c4 _sigtramp + 18446603343404213124
4  llvm-objdump             0x00000001058e13f1
llvm::object::MachOObjectFile::getSectionName(llvm::object::DataRefImpl,
llvm::StringRef&) const + 289
5  llvm-objdump             0x00000001058e2d80
llvm::object::MachOObjectFile::printRelocationTargetName(llvm::InMemoryStruct<llvm::object::macho::RelocationEntry>&,
llvm::raw_string_ostream&) const + 608
6  llvm-objdump             0x00000001058e337f
llvm::object::MachOObjectFile::getRelocationValueString(llvm::object::DataRefImpl,
llvm::SmallVectorImpl<char>&) const + 1087
7  llvm-objdump             0x00000001057df625
DumpObject(llvm::object::ObjectFile const*) + 2037
8  llvm-objdump             0x00000001057de49c main + 1388
9  libdyld.dylib            0x00007fff5a0be015 start + 1

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