以C#项目为启动项调试C++ exe及跨项目断点问题

我的VS解决方案包含三个项目：

• C++静态库项目（Core）
• 依赖Core的C++ EXE项目（Editor）
• C# .NET 8.0共享库项目（Project）

需求是把Project设为启动项，运行时实际启动Editor.exe，且三个项目的断点都能正常触发。

C++项目（Core/Editor）的Premake配置 #

filter "configurations:Debug or configurations:Editor"
        runtime "Debug"
        defines {
            "ENABLE_MIXED_MODE_DEBUG",
            "_DEBUG"
        }
        symbols "Full"
        optimize "Off"
        editandcontinue "Off"
        debuggertype "NativeWithManagedCore"
        justmycode "Off" 
        symbolspath "$(OutDir)$(TargetName).pdb"
        
        flags { 
            "MultiProcessorCompile",
            "NoIncrementalLink"
        }

C#项目的launchSettings.json #

{
  "profiles": {
    "Mixed Debug": {
      "commandName": "Executable",
      "workingDirectory": "PATH_TO_EDITOR",
      "executablePath": "PATH_TO_EDITOR/Editor.exe",

      "nativeDebugging": true,
      "symbolLoadInfo": {
        "loadAllSymbols": true,
        "searchPaths": [
          "PATH_TO_EDITOR",
          "PATH_TO_CORE"
        ]
      }
    }
  }
}

（Core和Editor已正常生成PDB文件）

C#项目的Premake配置 #

symbols "Full"
    clr "Unsafe"
    location("../")
    
    editandcontinue "Off"  
    justmycode "Off" 
    debuggertype "NativeWithManagedCore"

-- These two are probably not needed due to the launch profile.
debugcommand(PATH_TO_EDITOR/Editor.exe)
    debugdir(PATH_TO_EDITOR)

filter "configurations:Debug or configurations:Editor"
        optimize "Off"
        defines { "DEBUG", "TRACE", "ENABLE_MIXED_MODE_DEBUG" }

• 直接启动Editor项目，选择NativeWithManagedCore调试类型时，断点完全没反应，调试器的模块窗口是空的；切换成自动调试类型后，Editor和Core的断点能正常工作。
• 把Project设为启动项时，不管C++项目用什么调试类型，所有断点都无效，模块窗口还是空的，点暂停按钮会报错：Unable to break execution. The debugger is unable to stop this process as no CLR has been loaded

1. 调整C++项目的调试器类型 #

既然自动调试类型能正常触发C断点，说明硬设NativeWithManagedCore反而有冲突。把C项目的debuggertype改成Auto，其他混合调试相关配置保留：

filter "configurations:Debug or configurations:Editor"
        runtime "Debug"
        defines {
            "ENABLE_MIXED_MODE_DEBUG",
            "_DEBUG"
        }
        symbols "Full"
        optimize "Off"
        editandcontinue "Off"
        debuggertype "Auto" -- 替换原有的NativeWithManagedCore
        justmycode "Off" 
        symbolspath "$(OutDir)$(TargetName).pdb"
        
        flags { 
            "MultiProcessorCompile",
            "NoIncrementalLink"
        }

2. 完善C#项目的启动配置 #

• 把workingDirectory和executablePath改成绝对路径，避免相对路径解析出错；
• 显式添加managedDebugging: true，确保调试器同时托管和原生代码；
• 增加环境变量避免CLR加载干扰：

{
  "profiles": {
    "Mixed Debug": {
      "commandName": "Executable",
      "workingDirectory": "C:\\Your\\Full\\Path\\To\\Editor\\Output",
      "executablePath": "C:\\Your\\Full\\Path\\To\\Editor\\Output\\Editor.exe",
      "nativeDebugging": true,
      "managedDebugging": true, // 必须加上这个
      "symbolLoadInfo": {
        "loadAllSymbols": true,
        "searchPaths": [
          "C:\\Your\\Full\\Path\\To\\Editor\\Output",
          "C:\\Your\\Full\\Path\\To\\Core\\Output"
        ]
      },
      "environmentVariables": {
        "CORECLR_ENABLE_PROFILING": "0",
        "DOTNET_STARTUP_HOOKS": ""
      }
    }
  }
}

3. 清理C#项目的冗余Premake配置 #

launchSettings已经指定了启动参数，所以把debugcommand和debugdir删掉，同时把C#项目的debuggertype也改成Auto：

symbols "Full"
clr "Unsafe"
location("../")

editandcontinue "Off"  
justmycode "Off" 
debuggertype "Auto" -- 改成Auto

filter "configurations:Debug or configurations:Editor"
        optimize "Off"
        defines { "DEBUG", "TRACE", "ENABLE_MIXED_MODE_DEBUG" }

4. 检查输出路径与依赖 #

• 确保Editor和Core的Debug/Editor配置输出到同一目录，或者符号路径能正确找到对方的PDB；
• 确认Editor.exe能找到C#共享库的位置（比如把C#库输出到Editor的目录，或者在环境变量里添加路径）。

5. 手动加载符号（应急方案） #

如果还是不行，启动调试后打开调试 → Windows → 模块窗口，找到没加载符号的模块（Core/Editor/Project），右键选「加载符号」，手动指定PDB文件的路径。

内容的提问来源于stack exchange，提问作者Damir Halilovic