gdb on macOS 10.12 "Sierra"

Hi,

Has anyone succeeded yet in getting gdb to work on macOS 10.12?  
Reportedly, it works when you disable SIP (which is understandable,  
given  
https://developer.apple.com/library/content/documentation/Security/Conceptual/System_Integrity_Protection_Guide/RuntimeProtections/RuntimeProtections.html ), but plain code signing no longer seems to cut  
it.

With gdb 7.11.1, I occasionally get this when I try to start an inferior:
	During startup program terminated with signal SIG113, Real-time event 113.

and usually (with darwin_debug_flag set to 100 -- didn't manage to get  
the SIG113 anymore after I recompiled gdb with that variable set to  
100):

***
Starting program: textthr
[632 inferior]: inferior task: 0x300b, pid: 701
[632 inferior]:  new_ix:0/1, old_ix:0/0, new_id:0x3203 old_id:0x0
[632 inferior]: darwin_wait: waiting for a message pid=701 thread=0
[701 inferior]: ptrace (PT_TRACE_ME, 0, 0x0, 0): 0 (no error)
[701 inferior]: ptrace (PT_SIGEXC, 0, 0x0, 0): 0 (no error)
message header:
  bits: 0x1200
  size: 0x24
  remote-port: 0x0
  local-port: 0xf87
  reserved: 0x0
  id: 0x48
   data: 00000000 00000001 0000300b
[632 inferior]: darwin_wait: pid=701 exit, status=0x5
[632 inferior]: task=0x300b, prev=0x0, notify_port=0xf87
During startup program terminated with signal SIGTRAP, Trace/breakpoint trap.
***

gdb is code signed, the code signing certificate is the System  
keychain and set to "Trust always".

Thanks,


Jonas