linux - 如何使用 VSCode 调试 Linux 核心转储？

Question

我有意从我使用 VSCode 编写的 C++ 应用程序生成核心转储。我不知道如何调试核心转储。是否有人愿意分享这方面的经验？

***** 更新 *****我相信我现在已经开始工作了。我为核心文件创建了第二个调试配置。我需要添加指向生成的转储文件的“coreDumpPath”选项。我还需要删除始终构建新可执行文件的 preLaunchTask 选项。

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Answer 1

来自VScode docs

Memory dump debugging

The C/C++ extension for VS Code also has the ability to debug memory dumps. To debug a memory dump, open your launch.json file and add the coreDumpPath (for GDB or LLDB) or dumpPath (for the Visual Studio Windows Debugger) property to the C++ Launch configuration, set its value to be a string containing the path to the memory dump. This will even work for x86 programs being debugged on an x64 machine.

附言提问者已经用解决方案更新了问题。但是添加这个答案是为了帮助那些直接跳到答案部分的人 ;)

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更新:用于 C/C++ 扩展的示例 launch.json 没有硬编码核心文件名

{
    "version": "0.2.0",
    "configurations": [
        {
            "type": "cppdbg",
            "request": "launch",
            "name": "Open a core dump(c/c++)",
            "program": "<Path to the program here>",
            "coreDumpPath": "${input:coreFileName}",
            "cwd": "${workspaceFolder}",
            "MIMode": "lldb" // or gdb, if you are using gdb
        }
    ],
    "inputs": [
      {
        "id": "coreFileName",
        "type": "promptString",
        "description": "Enter core file path"
      }
    ]
}

示例 launch.json 用于没有硬编码核心文件名的 CodeLLDB 扩展

{
    "version": "0.2.0",
    "configurations": [
        {
            "type": "lldb",
            "request": "custom",
            "name": "Open a core dump",
            "initCommands": [
                "target create -c ${input:coreFileName}"
            ]
        }
    ],
    "inputs": [
      {
        "id": "coreFileName",
        "type": "promptString",
        "description": "Enter core file path"
      }
    ]    
}