Description
| Bugzilla Link | 36742 |
| Version | trunk |
| OS | Linux |
| Attachments | Reproduction binary |
| CC | @jh7370 |
Extended Description
When parsing the unwinding information in a x86-64 COFF binary (attached) llvm-readobj segfaults.
Reproduction:
llvm-readobj -unwind ./msvs_whatever_64_O1_psftp_stripped
bt:
Format: COFF-x86-64
Arch: x86_64
AddressSize: 64bit
UnwindInformation [
RuntimeFunction {
StartAddress: (0x0)
EndAddress: (0x4)
UnwindInfoAddress: (0x8)
#0 0x000055992cc2f6b9 llvm::sys::PrintStackTrace(llvm::raw_ostream&) (./bin/llvm-readobj+0x1d46b9)
#1 0x000055992cc2da06 llvm::sys::RunSignalHandlers() (./bin/llvm-readobj+0x1d2a06)
#2 0x000055992cc2db5c SignalHandler(int) (./bin/llvm-readobj+0x1d2b5c)
#3 0x00007fc4bb7f9da0 __restore_rt (/usr/lib/libpthread.so.0+0x11da0)
#4 0x000055992cbace25 llvm::object::COFFObjectFile::getSectionContents(llvm::object::coff_section const*, llvm::ArrayRef&) const (./bin/llvm-readobj+0x151e25)
#5 0x000055992cb5dbbb llvm::Win64EH::Dumper::printRuntimeFunction(llvm::Win64EH::Dumper::Context const&, llvm::object::coff_section const*, unsigned long, llvm::Win64EH::RuntimeFunction const&) (./bin/llvm-readobj+0x102bbb)
#6 0x000055992cb5e1d9 llvm::Win64EH::Dumper::printData(llvm::Win64EH::Dumper::Context const&) (./bin/llvm-readobj+0x1031d9)
#7 0x000055992cad0201 (anonymous namespace)::COFFDumper::printUnwindInfo() (./bin/llvm-readobj+0x75201)
#8 0x000055992cb48f7e dumpObject(llvm::object::ObjectFile const*, llvm::ScopedPrinter&) (./bin/llvm-readobj+0xedf7e)
#9 0x000055992caaa5d8 main (./bin/llvm-readobj+0x4f5d8)
#10 0x00007fc4ba317f4a __libc_start_main (/usr/lib/libc.so.6+0x20f4a)
#11 0x000055992cac157a _start (./bin/llvm-readobj+0x6657a)
Stack dump:
0. Program arguments: ./bin/llvm-readobj -unwind msvs_whatever_64_O1_psftp_stripped
[1] 26476 segmentation fault (core dumped) ./bin/llvm-readobj -unwind