VSCode调试C++报错：LLDB意外退出（错误码134）求助

环境信息 #

• 设备：2015款MacBook Air
• 系统：macOS 10.13.6
• VSCode版本：1.74.0 (Universal)
• 已安装插件：C/C++、Code Runner
• 测试代码（编译成功，调试报错）：

#include <iostream>
using namespace std;
int main() {
    cout << "Hello World!";
    return 0;
}

报错信息 #

Unable to start debugging. LLDB exited unexpectedly with exit code 134 (0x86)

当前配置文件 #

launch.json #

"configurations": [
        {
            "name": "C/C++: clang++ build and debug active file",
            "type": "cppdbg",
            "request": "launch",
            "program": "${fileDirname}/${fileBasenameNoExtension}",
            "args": [],
            "stopAtEntry": true,
            "cwd": "${workspaceFolder}",
            "environment": [],
            "externalConsole": false,
            "MIMode": "lldb",
            "preLaunchTask": "C/C++: clang++ build active file"
          }
    ]

tasks.json #

{
    "tasks": [
        {
            "type": "cppbuild",
            "label": "C/C++: clang++ build active file",
            "command": "/usr/bin/clang++",
            "args": [
                "-fcolor-diagnostics",
                "-fansi-escape-codes",
                "-g",
                "${file}",
                "-o",
                "${fileDirname}/${fileBasenameNoExtension}"
            ],
            "options": {
                "cwd": "${fileDirname}"
            },
            "problemMatcher": [
                "$gcc"
            ],
            "group": {
                "kind": "build",
                "isDefault": true
            },
            "detail": "Task generated by Debugger."
        }
    ],
    "version": "2.0.0"
}

解决方法 #

1. 降级C/C++插件版本 #

VSCode 1.74.0与新版C/C++插件在macOS 10.13.6这类旧系统上存在兼容性问题，尝试降级插件：

• 打开VSCode扩展面板，找到C/C++插件
• 点击插件右下角齿轮图标，选择「Install Another Version...」
• 选择v1.14.5版本安装，重启VSCode后重新调试

2. 调整launch.json配置 #

修改工作目录、控制台模式并指定LLDB调试器路径：

{
    "name": "C/C++: clang++ build and debug active file",
    "type": "cppdbg",
    "request": "launch",
    "program": "${fileDirname}/${fileBasenameNoExtension}",
    "args": [],
    "stopAtEntry": true,
    "cwd": "${fileDirname}", // 与tasks.json工作目录保持一致
    "environment": [],
    "externalConsole": true, // 切换为外部控制台
    "MIMode": "lldb",
    "miDebuggerPath": "/usr/bin/lldb-mi", // 明确指定调试器路径
    "preLaunchTask": "C/C++: clang++ build active file"
}

3. 检查可执行文件权限 #

确保编译生成的程序有执行权限：

• 打开终端，进入C++Projects文件夹：cd /你的项目路径/C++Projects
• 执行命令：chmod +x helloworld
• 重新尝试调试

4. 禁用Code Runner插件 #

暂时关闭Code Runner插件，避免其与C/C++插件的调试功能产生冲突，重启VSCode后再调试

5. 更新LLDB版本（可选） #

如果系统支持Homebrew，可安装新版LLDB替换系统自带版本：

• 安装Homebrew：/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
• 安装LLDB：brew install lldb
• 修改tasks.json的编译命令为Homebrew安装的clang++路径，同时在launch.json中指定新的lldb-mi路径

内容的提问来源于stack exchange，提问作者marech0721