调试期间在 lldb 中获取 class 静态成员函数地址：解释器无法在执行期间解析值

Question

在 lldb 中调试期间，我可以毫无问题地获取全局函数的地址。例如，我有以下代码：

#include <iostream>

void globalDoWork()
{
    std::cout << "Global do work call\n";
}

struct Dummy
{
    static void doWork()
    {
        std::cout << "Do work call\n";
    }
};

int main(int argc, char* argv[])
{
    globalDoWork();
    Dummy::doWork();

    std::cout << "global: " << (void*)&(globalDoWork) << "\n";
    std::cout << "static: " << (void*)&(Dummy::doWork) << "\n";

    return 0;
}

构建可执行文件后，我运行这个程序在 lldb 下：

Process 10759 stopped
* thread #1, queue = 'com.apple.main-thread', stop reason = step over
    frame #0: 0x00000001000011a7 ex43`main(argc=1, argv=0x00007ffeefbff8f0) at ex43.cpp:21:15
   18       globalDoWork();
   19       Dummy::doWork();
   20
-> 21       std::cout << "global: " << (void*)&(globalDoWork) << "\n";
   22       std::cout << "static: " << (void*)&(Dummy::doWork) << "\n";
   23
   24       return 0;
Target 0: (ex43) stopped.
(lldb) p globalDoWork
(void (*)()) [=12=] = 0x0000000100001100 (ex43`globalDoWork() at ex43.cpp:4)
(lldb) next
global: 0x100001100

并获取地址，但我不能与class静态成员函数相同的动作：

static: 0x100001220
Process 10765 stopped
* thread #1, queue = 'com.apple.main-thread', stop reason = step over
    frame #0: 0x0000000100001208 ex43`main(argc=1, argv=0x00007ffeefbff8f0) at ex43.cpp:24:5
   21       std::cout << "global: " << (void*)&(globalDoWork) << "\n";
   22       std::cout << "static: " << (void*)&(Dummy::doWork) << "\n";
   23
-> 24       return 0;
   25   }
Target 0: (ex43) stopped.
(lldb) p Dummy::doWork
error: supposed to interpret, but failed: Interpreter couldn't resolve a value during execution
(lldb) p (void*)&(Dummy::doWork)
error: supposed to interpret, but failed: Interpreter couldn't resolve a value during execution

有什么问题吗？我该怎么做？

Answer 1

有意思。调用函数有效：

(lldb) expr Dummy::doWork()
Do work call

但是我们没有正确获取作为函数指针的静态方法的值。请使用 http://bugs.llvm.org.

提交有关此问题的错误

请注意，lldb 确实有更简单的方法来查找符号的地址，如果这就是您想要做的。这就是 image lookup 命令的作用：

(lldb) image lookup -n Dummy::doWork
1 match found in /tmp/dowork:
        Address: dowork[0x0000000100001100] (dowork.__TEXT.__text + 304)
        Summary: dowork`Dummy::doWork() at dowork.cpp:11

调试期间在 lldb 中获取 class 静态成员函数地址：解释器无法在执行期间解析值

Get class static member function address in lldb during debugging: Interpreter couldn't resolve a value during execution

c++

debugging

lldb