$ lldb -c /tmp/emacs-25.1.core /usr/pkg/bin/emacs (lldb) target create "/usr/pkg/bin/emacs" --core "/tmp/emacs-25.1.core" Core file '/tmp/emacs-25.1.core' (x86_64) was loaded. (lldb) bt * thread #1, stop reason = signal SIGABRT * frame #0: 0x00007f7fecc3b39a libc.so.12`_sys_poll + 10 frame #1: 0x00007f7fed007170 libpthread.so.1`poll(fds=, nfds=, timeout=) at pthread_cancelstub.c:412 frame #2: 0x00007f7ff3466cce libglib-2.0.so.0`g_poll(fds=0x00000000016a3dc0, nfds=1, timeout=-1) at gpoll.c:124 frame #3: 0x00007f7ff345530e libglib-2.0.so.0`g_main_context_poll(context=0x000000000135e900, timeout=-1, priority=2147483647, fds=0x00000000016a3dc0, n_fds=1) at gmain.c:4212 frame #4: 0x00007f7ff3454ca1 libglib-2.0.so.0`g_main_context_iterate(context=0x000000000135e900, block=1, dispatch=1, self=0x0000000001678400) at gmain.c:3908 frame #5: 0x00007f7ff3454d90 libglib-2.0.so.0`g_main_context_iteration(context=0x000000000135e900, may_block=1) at gmain.c:3974 frame #6: 0x00007f7ff34569d3 libglib-2.0.so.0`glib_worker_main(data=0x0000000000000000) at gmain.c:5767 frame #7: 0x00007f7ff3483cc9 libglib-2.0.so.0`g_thread_proxy(data=0x0000000001678400) at gthread.c:784 frame #8: 0x00007f7fed00b6e1 libpthread.so.1`pthread__create_tramp(cookie=0x00000000016ae000) at pthread.c:576 frame #9: 0x00007f7fecc87ac0 libc.so.12 (lldb) thread list Process 0 stopped * thread #1: tid = 983040, 0x00007f7fecc3b39a libc.so.12`_sys_poll + 10, stop reason = signal SIGABRT (lldb) register read --all General Purpose Registers: rax = 0x0000000000000004 rbx = 0x00007f7fed210690 __uselibcstub rcx = 0x00007f7fecc3b39a libc.so.12`_sys_poll + 10 rdx = 0x00000000ffffffff rdi = 0x00000000016a3dc0 rsi = 0x0000000000000001 rbp = 0x00000000016ae000 rsp = 0x00007f7fe5fffe78 r8 = 0x0000000000000000 r9 = 0x0000000000000000 r10 = 0x0000000000000001 r11 = 0x0000000000000246 r12 = 0x00007f7ff3483c10 libglib-2.0.so.0`g_thread_proxy at gthread.c:760 r13 = 0x0000000001678400 r14 = 0x0000000001678430 r15 = 0x00000000016ae000 rip = 0x00007f7fecc3b39a libc.so.12`_sys_poll + 10 rflags = 0x0000000000000247 cs = 0x0000000000000047 fs = 0x0000000000000000 gs = 0x0000000000000000 ss = 0x000000000000003f ds = 0x000000000000003f es = 0x000000000000003f eax = 0x00000004 ebx = 0xed210690 ecx = 0xecc3b39a edx = 0xffffffff edi = 0x016a3dc0 esi = 0x00000001 ebp = 0x016ae000 esp = 0xe5fffe78 r8d = 0x00000000 r9d = 0x00000000 r10d = 0x00000001 r11d = 0x00000246 r12d = 0xf3483c10 r13d = 0x01678400 r14d = 0x01678430 r15d = 0x016ae000 ax = 0x0004 bx = 0x0690 cx = 0xb39a dx = 0xffff di = 0x3dc0 si = 0x0001 bp = 0xe000 sp = 0xfe78 r8w = 0x0000 r9w = 0x0000 r10w = 0x0001 r11w = 0x0246 r12w = 0x3c10 r13w = 0x8400 r14w = 0x8430 r15w = 0xe000 ah = 0x00 bh = 0x06 ch = 0xb3 dh = 0xff al = 0x04 bl = 0x90 cl = 0x9a dl = 0xff dil = 0xc0 sil = 0x01 bpl = 0x00 spl = 0x78 r8l = 0x00 r9l = 0x00 r10l = 0x01 r11l = 0x46 r12l = 0x10 r13l = 0x00 r14l = 0x30 r15l = 0x00 Floating Point Registers: fctrl = 0x037f fstat = 0x0000 ftag = 0x00 fop = 0x0000 fiseg = 0x00000000 fioff = 0x00000000 foseg = 0x00000000 fooff = 0x00000000 mxcsr = 0x00001f80 mxcsrmask = 0x0000ffbf st0 = {0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00} st1 = {0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00} st2 = {0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00} st3 = {0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00} st4 = {0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00} st5 = {0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00} st6 = {0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00} st7 = {0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00} mm0 = 0x0000000000000000 mm1 = 0x0000000000000000 mm2 = 0x0000000000000000 mm3 = 0x0000000000000000 mm4 = 0x0000000000000000 mm5 = 0x0000000000000000 mm6 = 0x0000000000000000 mm7 = 0x0000000000000000 xmm0 = {0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00} xmm1 = {0x1f 0x00 0x00 0x00 0x1f 0x00 0x00 0x00 0x1f 0x00 0x00 0x00 0x1f 0x00 0x00 0x00} xmm2 = {0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00} xmm3 = {0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00} xmm4 = {0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00} xmm5 = {0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00} xmm6 = {0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00} xmm7 = {0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00} xmm8 = {0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00} xmm9 = {0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00} xmm10 = {0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00} xmm11 = {0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00} xmm12 = {0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00} xmm13 = {0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00} xmm14 = {0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00} xmm15 = {0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00} Advanced Vector Extensions: 16 registers were unavailable. (lldb)