具有CMakeLists.txt的C ++ AddressSanitizer导致asan错误 [英] C++ AddressSanitizer with CMakeLists.txt results in asan errors

问题描述

尝试在C ++项目上使用 AddressSanitizer 工具(ASan)，非常详细的输出，其中包含对<__ asan_report_store8'的未定义引用和对'__asan_report_load8'的未定义引用，以及其他类似 __ asan_stack_malloc_2 的引用.我的项目是使用CMake构建的，并且已将以下行添加到CMakeLists.txt中:

Trying to use the AddressSanitizer tool (ASan) on my C++ project, I get a very verbose output full of undefined reference to '__asan_report_store8' and undefined reference to '__asan_report_load8', and others like __asan_stack_malloc_2. My project is built with CMake, and I've added the following line to my CMakeLists.txt:

add_definitions(-fsanitize=address -g3 -fno-omit-frame-pointer)

遵循以下ASan示例:

following these ASan examples:

• 带有makefile的示例
• Jason Turner快速介绍视频

运行上面的makefile示例，我得到了预期的漂亮输出(也可以在视频链接中看到).但是对于我的项目，我得到了那些错误的混乱堆栈跟踪.

Running the above makefile example I get the expected pretty output (which can also be seen in the video link). But for my project I'm getting a messy stack trace of those errors.

注意:

• ubuntu 16.04
• 我已设置环境变量 ASAN_OPTIONS = symbolize = 1 和 ASAN_SYMBOLIZER_PATH =/usr/lib/llvm-5.0/bin/llvm-symbolizer 以便打印ASan输出中的行号

• ubuntu 16.04
• I've set the environment variables ASAN_OPTIONS=symbolize=1 and ASAN_SYMBOLIZER_PATH=/usr/lib/llvm-5.0/bin/llvm-symbolizer in order to print the line numbers in the ASan output

推荐答案

当编译要使用其中一种LLVM Sanitizer运行的代码时，必须将 -fsanitize = ... 标志传递给编译器和链接器.使用CMake，您可以通过调用 target_link_libraries :

When compiling code to be run with one of the LLVM Sanitizers, you have to pass the -fsanitize=... flag to both the compiler and the linker. With CMake, you can do this by calling target_link_libraries:

target_link_libraries(MyTarget
  -fsanitize=address
)

或者，如果您不使用现代CMake，则可以使用 link_libraries 命令

Alternatively, if you aren't using modern CMake, you can do the same with the link_libraries command

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