callCgoSymbolizer(&arg)
			}
			if stop {
				return
			}
		}
	}
	return n, 0
}

// printAncestorTraceback prints the traceback of the given ancestor.
// TODO: Unify this with gentraceback and CallersFrames.
func printAncestorTraceback(ancestor ancestorInfo) {
	print("[originating from goroutine ", ancestor.goid, "]:\n")
	for fidx, pc := range ancestor.pcs {