return false
	}
	f := findfunc(ctxt.sigpc())
	if !(stringslite.HasPrefix(funcname(f), "runtime.debugCall") || stringslite.HasPrefix(funcname(f), "debugCall")) {
		println("trap in unknown function", funcname(f))
		return false
	}
	if !sigctxtAtTrapInstruction(ctxt) {
		println("trap at non-INT3 instruction pc =", hex(ctxt.sigpc()))
		return false
	}

		// Have to pass arguments out of band since
		// augmenting the stack frame would break
		// the unwinding code.
		gp.sig = sig
		gp.sigcode0 = uintptr(c.sigcode())
		gp.sigcode1 = c.fault()
		gp.sigpc = c.sigpc()

		c.preparePanic(sig, gp)
		return
	}

	if c.sigFromUser() || flags&_SigNotify != 0 {
		if sigsend(sig) {
			return
		}
	}

	if c.sigFromUser() && signal_ignored(sig) {

		// we can reliably access it from the panic routines.
		memmove(unsafe.Pointer(mp.notesig), unsafe.Pointer(note), uintptr(len(notestr)+1))
		gp.sig = uint32(sig)
		gp.sigpc = c.pc()

		pc := c.pc()
		sp := c.sp()

		// If we don't recognize the PC as code
		// but we do recognize the top pointer on the stack as code,
		// then assume this was a call to non-code and treat like

		signame := signame(gp.sig)
		if signame != "" {
			print("[signal ", signame)
		} else {
			print("[signal ", hex(gp.sig))
		}
		print(" code=", hex(gp.sigcode0), " addr=", hex(gp.sigcode1), " pc=", hex(gp.sigpc), "]\n")
	}

	level, all, docrash := gotraceback()
	if level > 0 {
		if gp != gp.m.curg {
			all = true
		}
		if gp != gp.m.g0 {
			print("\n")
			goroutineheader(gp)

	lockedm       muintptr
	sig           uint32
	writebuf      []byte
	sigcode0      uintptr
	sigcode1      uintptr
	sigpc         uintptr
	parentGoid    uint64          // goid of goroutine that created this goroutine
	gopc          uintptr         // pc of go statement that created this goroutine