使用 gdb 检查标准容器 (std::map) 内容

2021-12-10 00:00:00 gdb c++ map stl

假设有这样的东西:

#include <map>
int main(){
    std::map<int,int> m;
    m[1] = 2;
    m[2] = 4;
    return 0;
}

我希望能够从 gdb 中检查运行该程序的地图的内容.
如果我尝试使用下标运算符，我会得到:

I would like to be able to inspect the contents of the map running the program from gdb.
If I try using the subscript operator I get:

(gdb) p m[1] Attempt to take address of value not located in memory.

使用 find 方法不会产生更好的结果:

Using the find method does not yield better results:

(gdb) p m.find(1) Cannot evaluate function -- may be inlined

有没有办法做到这一点?

Is there a way to accomplish this?

推荐答案

我认为没有，至少如果你的源代码经过优化等没有.但是，有一些 gdb 宏可以为你检查 STL 容器:

I think there isn't, at least not if your source is optimized etc. However, there are some macros for gdb that can inspect STL containers for you:

http://sourceware.org/ml/gdb/2008-02/msg00064.html

不过，我不使用这个，所以YMMV

However, I don't use this, so YMMV

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