请教一下：
在lldb调试时，打watchpoint经常会挂掉。reason = EXC_BREAKPOINT (code=258, subcode=0x112718464)
- thread #16, stop reason = EXC_BREAKPOINT (code=258, subcode=0x112718464)
frame #0: 0x000000019958a2f4 libsystem_platform.dylib_platform_memmove + 260 libsystem_platform.dylib_platform_memmove:
有哪位知道是什么原因，如何解决？