Hi, I build llvm+clang+lldb 3.7 successfully on centos7, and lldb -p PID works pretty well. However when I tried lldb -c corefile executable_bin, lldb itself core dumpped. Attached the following core info which is debugged by gdb: [root@dn-cn-controller-4fbd4 data1]# lldb -c a.corefile /usr/local/myproject/bin/cnode *(lldb) target create "/usr/local/myproject/bin/cnode" --core "a.corefile"* Segmentation fault (core dumped)
*And then I tried gdb to check the lldb call stack:* *(gdb) info threads* Id Target Id Frame 3 Thread 0x7f81c4795700 (LWP 64) 0x00007f81c9ed46d5 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 2 Thread 0x7f81ce580740 (LWP 59) 0x00007f81c9ed46d5 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 * 1 Thread 0x7f81c3f94700 (LWP 65) 0x00007f81cbe00630 in lldb_private::ArchSpec::GetMachine() const () from /opt/dependency/tools/bin/../lib64/liblldb.so.3.7 *(gdb) bt* #0 0x00007f81cbe00630 in lldb_private::ArchSpec::GetMachine() const () from /opt/dependency/tools/bin/../lib64/liblldb.so.3.7 #1 0x00007f81cc20458f in RegisterContextPOSIX_x86::RegisterContextPOSIX_x86(lldb_private::Thread&, unsigned int, lldb_private::RegisterInfoInterface*) () from /opt/dependency/tools/bin/../lib64/liblldb.so.3.7 #2 0x00007f81cc153a24 in RegisterContextCorePOSIX_x86_64::RegisterContextCorePOSIX_x86_64(lldb_private::Thread&, lldb_private::RegisterInfoInterface*, lldb_private::DataExtractor const&, lldb_private::DataExtractor const&) () from /opt/dependency/tools/bin/../lib64/liblldb.so.3.7 #3 0x00007f81cc151e5e in ThreadElfCore::CreateRegisterContextForFrame(lldb_private::StackFrame*) () from /opt/dependency/tools/bin/../lib64/liblldb.so.3.7 #4 0x00007f81cc1523b3 in ThreadElfCore::GetRegisterContext() () from /opt/dependency/tools/bin/../lib64/liblldb.so.3.7 #5 0x00007f81cbfae9e2 in lldb_private::StackFrameList::GetFramesUpTo(unsigned int) () from /opt/dependency/tools/bin/../lib64/liblldb.so.3.7 #6 0x00007f81cbfaf3e7 in lldb_private::StackFrameList::ResetCurrentInlinedDepth() () from /opt/dependency/tools/bin/../lib64/liblldb.so.3.7 #7 0x00007f81cbfd32e2 in lldb_private::Thread::ShouldStop(lldb_private::Event*) () from /opt/dependency/tools/bin/../lib64/liblldb.so.3.7 #8 0x00007f81cbfd98d2 in lldb_private::ThreadList::ShouldStop(lldb_private::Event*) () from /opt/dependency/tools/bin/../lib64/liblldb.so.3.7 #9 0x00007f81cbf997bb in lldb_private::Process::ShouldBroadcastEvent(lldb_private::Event*) () from /opt/dependency/tools/bin/../lib64/liblldb.so.3.7 #10 0x00007f81cbf998a1 in lldb_private::Process::HandlePrivateEvent(std::shared_ptr<lldb_private::Event>&) () from /opt/dependency/tools/bin/../lib64/liblldb.so.3.7 #11 0x00007f81cbf9a77a in lldb_private::Process::RunPrivateStateThread(bool) () from /opt/dependency/tools/bin/../lib64/liblldb.so.3.7 #12 0x00007f81cbdf7db2 in lldb_private::HostNativeThreadBase::ThreadCreateTrampoline(void*) () from /opt/dependency/tools/bin/../lib64/liblldb.so.3.7 #13 0x00007f81c9ed0dc5 in start_thread () from /lib64/libpthread.so.0 #14 0x00007f81c91c821d in clone () from /lib64/libc.so.6 Any suggesstion about why lldb -c core dump? Thanks, Zhenglin
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