zouyonghao opened a new issue #1390:
URL: https://github.com/apache/incubator-brpc/issues/1390
**Describe the bug (描述bug)**
memory leak when binding failed
**To Reproduce (复现方法)**
bind a used port
**Expected behavior (期望行为)**
**Versions (各种版本)**
OS: Ubuntu 18.04
Compiler: clang + ASan
brpc: 0.9.0
protobuf: 3.0.0
**Additional context/screenshots (更多上下文/截图)**
```
E0428 03:47:30.283096 117030
/home/zyh/incubator-brpc/src/brpc/server.cpp:956] Fail to listen 0.0.0.0:8301
E0428 03:47:30.283232 117030 /home/zyh/braft/example/atomic/server.cpp:508]
Fail to start Server
=================================================================
==117030==ERROR: LeakSanitizer: detected memory leaks
Direct leak of 56 byte(s) in 1 object(s) allocated from:
#0 0x6d14ad in operator new(unsigned long)
(/home/zyh/braft/example/atomic/atomic_server+0x6d14ad)
#1 0xca1961 in brpc::Server::StartInternal(in_addr const&,
brpc::PortRange const&, brpc::ServerOptions const*)
/home/zyh/incubator-brpc/src/brpc/server.cpp:783
#2 0xca330e in brpc::Server::Start(butil::EndPoint const&,
brpc::ServerOptions const*) /home/zyh/incubator-brpc/src/brpc/server.cpp:1063
#3 0xca34b2 in brpc::Server::Start(int, brpc::ServerOptions const*)
/home/zyh/incubator-brpc/src/brpc/server.cpp:1081
#4 0x6d5038 in main /home/zyh/braft/example/atomic/server.cpp:507:16
#5 0x7fa2b2449bf6 in __libc_start_main
/build/glibc-S9d2JN/glibc-2.27/csu/../csu/libc-start.c:310
SUMMARY: AddressSanitizer: 56 byte(s) leaked in 1 allocation(s).
```
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