Debugging Rust with GDB and Visual Studio Code

Version Infomation

  • VS Code: 1.36.1
  • GDB: 7.11.1
  • rustc 1.36.0

Installing Steps

  • Install Rust.
  • Install C/C++ Extension of VS Code (Rust Extension is recommended though).
  • Use cargo new Project-folder to create a new project folder.
  • Open the project folder (not the src sub-folder of the project folder) with VS Code.

Debugging Example

  • Select main.rs file. Then press F5, and select “C++ (GDB/LLDB)”.
  • Modified the launch.json configuration file as the following:
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{
    // 使用 IntelliSense 以得知可用的屬性。
    // 暫留以檢視現有屬性的描述。
    // 如需詳細資訊，請瀏覽: https://go.microsoft.com/fwlink/?linkid=830387
    "version": "0.2.0",
    "configurations": [

        {
            "type": "cppdbg",
            "request": "launch",
            "name": "(Linux) Launch",
            "program": "${workspaceRoot}/target/debug/${workspaceFolderBasename}",
            "args": [],
            "cwd": "${workspaceRoot}",
            "externalConsole": false,
			"MIMode": "gdb",
            "preLaunchTask": "Build",
        }
    ]
}
  • Because we want to compile the project (cargo build) before debugging it, we should add a task to tasks.json:
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{
    "version": "2.0.0",
    "tasks": [
        {
            "label": "Build",
            "command": "cargo",
            "args": ["build"],
        }
    ]
}

Debugging Demo

PS

The debugging function seems to be imcomplete.

References