使用gcc 4.8构建时如何检测是否使用地址清理器构建？ [英] How to detect if building with address sanitizer when building with gcc 4.8?

问题描述

我正在开发一个用C编写的程序，我偶尔会使用地址清理器来构建该程序，主要是为了捕获错误。该程序在启动时会在日志中显示一条横幅，其中包含以下信息：谁构建了它，构建了它的分支，编译器等。我认为如果二进制文件是使用地址清理器构建的，也可以很好地阐明它。我知道有__has_feature（address_sanitizer），但这仅适用于clang。我尝试了以下简单程序：

I'm working on a program written in C that I occasionally build with address sanitizer, basically to catch bugs. The program prints a banner in the logs when it starts up with info such as: who built it, the branch it was built on, compiler etc. I was thinking it would be nice to also spell out if the binary was built using address sanitizer. I know there's __has_feature(address_sanitizer), but that only works for clang. I tried the following simple program:

#include <stdio.h>

int main()
{
#if defined(__has_feature)
# if __has_feature(address_sanitizer)
    printf ("We has ASAN!\n");
# else
    printf ("We have has_feature, no ASAN!\n");
# endif
#else
    printf ("We got nothing!\n");
#endif

    return 0;
}

使用 gcc建造时-gall -g -fsanitize = address -o asan asan.c ，结果为：

We got nothing!

使用 clang -Wall -g -fsanitize = address -o asan asan。 c 我得到：

We has ASAN!

是否存在与__has_feature等效的gcc？

Is there a gcc equivalent to __has_feature?

我知道有很多方法可以检查，例如使用地址清理器构建的程序的巨大VSZ值，只是想知道是否存在编译时定义或其他东西。

I know there are ways to check, like the huge VSZ value for programs built with address sanitizer, just wondering if there's a compile-time define or something.

推荐答案

从GCC 4.8.0手册：

__SANITIZE_ADDRESS__

定义该宏，当<$ c时值为1 $ c> -fsanitize = address 正在使用。

This macro is defined, with value 1, when -fsanitize=address is in use.

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