编译ASAN版本报错

[acelyc111]

Describe the bug (描述bug)
尝试编译ASAN版本的brpc库，将CMakeLists.txt修改：

< set(CMAKE_CXX_FLAGS "${CMAKE_CPP_FLAGS} -O2 -pipe -Wall -W -fPIC -fstrict-aliasing -Wno-invalid-offsetof -Wno-unused-parameter -fno-omit-frame-pointer")
---
> set(CMAKE_CXX_FLAGS "${CMAKE_CPP_FLAGS} -O1 -fsanitize=address -pipe -Wall -W -fPIC -fstrict-aliasing -Wno-invalid-offsetof -Wno-unused-parameter -fno-omit-frame-pointer")

链接报错：

[ 97%] Linking CXX executable ../../output/bin/rpc_press
`.note.GNU-stack' referenced in section `.init_array.00099' of CMakeFiles/OBJ_LIB.dir/bthread/context.cpp.o: defined in discarded section `.note.GNU-stack' of CMakeFiles/OBJ_LIB.dir/bthread/context.cpp.o
collect2: error: ld returned 1 exit status
make[2]: *** [output/lib/libbrpc.so] Error 1
make[1]: *** [src/CMakeFiles/brpc-shared.dir/all] Error 2
make[1]: *** Waiting for unfinished jobs....
../../output/lib/libbrpc.a(file_path.cc.o): In function `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::size() const':
/usr/include/c++/7.3.0/bits/basic_string.h:912: undefined reference to `__asan_report_load8'

To Reproduce (复现方法)

Expected behavior (期望行为)
编译链接通过

Versions (各种版本)
OS:
Compiler:
brpc:
protobuf:

Additional context/screenshots (更多上下文/截图)

[lorinlee]

"undefined reference to `__asan_report_load8'" reports a linking error, maybe you can try to add '-lasan'.

[acelyc111]

"undefined reference to `__asan_report_load8'" reports a linking error, maybe you can try to add '-lasan'.

@lorinlee Thanks! After I adding '-lasan', another link error reported:

`.note.GNU-stack' referenced in section `.init_array.00099' of ../../output/lib/libbrpc.a(context.cpp.o): defined in discarded section `.note.GNU-stack' of ../../output/lib/libbrpc.a(context.cpp.o)

[lorinlee]

@acelyc111 please provide more information about the environment, thx, such as
Versions (各种版本)
OS:
Compiler:
brpc:
protobuf:

[acelyc111]

@lorinlee
Versions (各种版本)
OS: CentOS Linux release 7.5.1804
Compiler: g++ 7.3.0
brpc: 0.9.5
protobuf: 3.5.1

In fact I'm using a Apache Doris's build docker image: apachedoris/doris-dev:build-env-1.2

[warriorpaw]

"undefined reference to `__asan_report_load8'" reports a linking error, maybe you can try to add '-lasan'.

@lorinlee Thanks! After I adding '-lasan', another link error reported:

`.note.GNU-stack' referenced in section `.init_array.00099' of ../../output/lib/libbrpc.a(context.cpp.o): defined in discarded section `.note.GNU-stack' of ../../output/lib/libbrpc.a(context.cpp.o)

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=47071
context.cpp里汇编写的不规范导致的，参照这个链接，在你所在平台对应的两个汇编函数结尾加上 一行".previous" "\n"就行了。

[condy0919]

在 aarch64 上还有这个问题， #1289 只解决在 x86 平台上的问题