lang存储器消毒剂；如何使其打印源行号 [英] clang memory sanitizer; how to make it print source line numbers

问题描述

我正在使用 clang ++ -fsanitize = memory -fsanitize-memory-track-origins -fno-omit-frame-pointer -g -O0 编译程序我运行它，输出为：

I'm compiling my program with clang++ -fsanitize=memory -fsanitize-memory-track-origins -fno-omit-frame-pointer -g -O0 and when I run it, the output is:

matiu@matiu-laptop:~/projects/json++11/build$ ./tests 
.......==10534== WARNING: MemorySanitizer: use-of-uninitialized-value
    #0 0x7fe7602d4a51 (/home/matiu/projects/json++11/build/tests+0x106a51)
    #1 0x7fe7602dfca6 (/home/matiu/projects/json++11/build/tests+0x111ca6)
    ...
    #31 0x7fe75edbaec4 (/lib/x86_64-linux-gnu/libc.so.6+0x21ec4)
    #32 0x7fe7602808dc (/home/matiu/projects/json++11/build/tests+0xb28dc)

  Uninitialized value was created by a heap allocation
    #0 0x7fe76026e7b3 (/home/matiu/projects/json++11/build/tests+0xa07b3)
    #1 0x7fe7602ee7da (/home/matiu/projects/json++11/build/tests+0x1207da)
    ...
    #18 0x7fe7602c1c4c (/home/matiu/projects/json++11/build/tests+0xf3c4c)
    #19 0x7fe7602873fa (/home/matiu/projects/json++11/build/tests+0xb93fa)

SUMMARY: MemorySanitizer: use-of-uninitialized-value ??:0 ??
Exiting

我如何使其像美丽的示例一样显示行号： http://clang.llvm.org/docs/MemorySanitizer.html

How can I make it show line numbers like in the beautiful examples: http://clang.llvm.org/docs/MemorySanitizer.html

我怀疑这是不可能的，因为我的pragram是一堆巨大的嵌套lambdas： https://github.com/matiu2/json--11/blob/master/tests.cpp

I'm suspecting it might not be possible, due to my pragram being one giant nested bunch of lambdas: https://github.com/matiu2/json--11/blob/master/tests.cpp

推荐答案

使用地址清理器，我注意到我需要定义以下环境变量：

With the address sanitizer I noticed that I needed to have these environment variables defined:

• ASAN_OPTIONS = symbolize = 1 （仅当使用GCC> 4.8编译时才需要）和


• ASAN_SYMBOLIZER_PATH = $（其中llvm-symbolizer）我认为该符号器是您想要的。它将符号转换为具有行号和列的文件名。

• ASAN_OPTIONS=symbolize=1 (only needed when compiled with GCC > 4.8) and
• ASAN_SYMBOLIZER_PATH=$(which llvm-symbolizer) I think the symbolizer is what you're looking for. It transforms symbols to file names with line numbers and columns.

在内存消毒剂项目网站内容为：

符号化

Symbolization

将MSAN_SYMBOLIZER_PATH环境变量设置为
llvm-symbolizer二进制文件的路径（通常使用LLVM构建）。

Set MSAN_SYMBOLIZER_PATH environment variable to the path to llvm-symbolizer binary (normally built with LLVM). MemorySanitizer will use it to symbolize reports on-the-fly.

因此，您需要 MSAN_SYMBOLIZER_PATH 设置为类似于 ASAN_SYMBOLIZER_PATH 。

So you need MSAN_SYMBOLIZER_PATH to be set analogous to ASAN_SYMBOLIZER_PATH.

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