guodongxiaren commented on issue #165:
URL: https://github.com/apache/incubator-brpc/issues/165#issuecomment-824970750
> ```
> #include <string>
> std::stof("a");
> ```
>
> 在brpc接口内部使用该方法，导致服务core。通过分析core有办法能直接定位到哪一行出现的问题吗？
>
> 使用gdb打开core文件，bt后得到下面的信息：
>
> ```
> (gdb) bt
> #0 0x00007f98eb2b11f7 in raise () from /lib64/libc.so.6
> #1 0x00007f98eb2b28e8 in abort () from /lib64/libc.so.6
> #2 0x0000000000a7a6b5 in __gnu_cxx::__verbose_terminate_handler() ()
> #3 0x0000000000a23406 in __cxxabiv1::__terminate(void (*)()) ()
> #4 0x0000000000a7a159 in __cxa_call_terminate ()
> #5 0x0000000000a232f4 in __gxx_personality_v0 ()
> #6 0x0000000000a7eeb3 in _Unwind_RaiseException_Phase2 ()
> #7 0x0000000000a7f6a7 in _Unwind_Resume ()
> #8 0x00000000007bdd2a in operator() (this=<optimized out>, obj=<optimized
out>) at ./src/brpc/destroyable.h:33
> #9 ~unique_ptr (this=<synthetic pointer>, __in_chrg=<optimized out>) at
/usr/include/c++/4.8.2/bits/unique_ptr.h:184
> #10 ~DestroyingPtr (this=<synthetic pointer>, __in_chrg=<optimized out>)
at ./src/brpc/destroyable.h:39
> #11 brpc::policy::ProcessRpcRequest (msg_base=<optimized out>) at
src/brpc/policy/baidu_rpc_protocol.cpp:508
> #12 0x00000000008df7fa in brpc::ProcessInputMessage
(void_arg=void_arg@entry=0x7f98a8021930) at src/brpc/input_messenger.cpp:132
> #13 0x00000000008e07e4 in operator() (this=<optimized out>,
last_msg=0x7f98a8021930) at src/brpc/input_messenger.cpp:138
> #14 brpc::InputMessenger::OnNewMessages (m=0x7f987401ac80) at
/usr/include/c++/4.8.2/bits/unique_ptr.h:184
> #15 0x00000000008d04ed in brpc::Socket::ProcessEvent (arg=0x7f987401ac80)
at src/brpc/socket.cpp:1049
> #16 0x000000000071c1f4 in bthread::TaskGroup::task_runner
(skip_remained=<optimized out>) at src/bthread/task_group.cpp:291
> #17 0x0000000000834791 in bthread_make_fcontext ()
> #18 0x0000000000000000 in ?? ()
> ```
>
> 
> 
很明显是出现了未捕获的异常，下次遇到这种core栈，给自己的业务代码多加noexcept来缩小排查范围
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