(gdb) info stack
#0  0x00007ffff7deb0dc in _dl_fixup () from /lib64/ld-linux-x86-64.so.2
#1  0x00007ffff7df1865 in _dl_runtime_resolve ()
   from /lib64/ld-linux-x86-64.so.2
#2  0x00007ffff77735a7 in std::thread::_M_start_thread(std::shared_ptr<std::thread::_Impl_base>) () from /usr/lib64/libstdc++.so.6
#3  0x00007fffef8190bb in llvm::splitCodeGen(std::unique_ptr<llvm::Module, std::default_delete<llvm::Module> >, llvm::ArrayRef<llvm::raw_pwrite_stream*>, llvm::StringRef, llvm::StringRef, llvm::TargetOptions const&, llvm::Reloc::Model, llvm::CodeModel::Model, llvm::CodeGenOpt::Level) ()
   from /home/tnakamura/fio/ninja/1/./lib/LLVMgold.so
#4  0x00007fffeead88d0 in allSymbolsReadHook(llvm::raw_fd_ostream*) ()
   from /home/tnakamura/fio/ninja/1/./lib/LLVMgold.so
#5  0x00007fffeead9148 in all_symbols_read_hook() ()
   from /home/tnakamura/fio/ninja/1/./lib/LLVMgold.so
#6  0x0000000000596dff in gold::Plugin_manager::all_symbols_read(gold::Workqueue*, gold::Task*, gold::Input_objects*, gold::Symbol_table*, gold::Dirsearch*, gold::Mapfile*, gold::Task_token**) ()
#7  0x0000000000596f34 in gold::Plugin_hook::run(gold::Workqueue*) ()
#8  0x00000000005f0c54 in gold::Workqueue::find_and_run_task(int) ()
#9  0x00000000005f0fba in gold::Workqueue::process(int) ()
#10 0x00000000004050e6 in main ()