为什么我不能进入 GDB 中的 C++ cout 标准库函数?

2022-01-20 00:00:00 gdb c++

我写了一个简单的test.cc如下:

I wrote a simple test.cc as follows:

#include <iostream>
using namespace std;

int main()
{
  cout << "Hello world" << endl;
  return 0;
}

我编译了:

g++ -g test.cc -o test.o

我运行了 gdb 并在 "Hello world" 行放了一个断点:

I ran gdb and put a breakpoint at the "Hello world" line:

$ gdb test.o
(gdb) b 7
(gdb) c

然后 gdb 停在 "Hello world" 行，但是当我运行时

Then gdb stops at the "Hello world" line, but when I run

(gdb) s

无法进入 cout 函数.所以我的问题是，我怎样才能进入 cout 函数?

It fails to step into the cout function. So my question is, how can I step into the cout function?

推荐答案

如果没有链接到带有调试信息的标准库版本，它不知道如何进入库；它只能越过它(即运行直到控制权返回到带有调试信息的代码).

If it wasn't linked against a version of the standard library with debugging information, it doesn't know how to step into the library; it can only step over it (that is, run until control returns to the code with the debugging information).

请查阅您系统的文档以了解如何安装标准 C 和 C++ 库的调试版本.

Consult the documentation for your system to find out how to install the debug version of the standard C and C++ libraries.

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