No member named 'to_array' in namespace 'std'

[ghost]

I run ubuntu20.04 on wsl2, and have install clang++-12. After I write a program in VS Code like that:

#include <array>
#include <iostream>
using namespace std;

int main() {
    auto arr = std::to_array({1, 2, 3, 4, 5, 6});
    for (auto val : arr) {
        std::cout << val << " ";
    }
    std::cout << std::endl;
}

And I create the launch.json and tasks.json files like that:

• launch.json

{
    "version": "0.2.0",
    "configurations": [
        {
            "type": "lldb",
            "request": "launch",
            "name": "Debug",
            "program": "${workspaceFolder}/build/${fileBasenameNoExtension}",
            "args": [],
            "cwd": "${workspaceFolder}",
            "preLaunchTask": "build"
        }
    ]
}

• tasks.json

{
    "version": "2.0.0",
    "tasks": [
        {
            "label": "build",
            "type": "shell",
            "command": "clang++",
            "args": [
                "${file}",
                "-std=c++20",
                "-Wall",
                "-g",
                "-o",
                "${workspaceFolder}/build/${fileBasenameNoExtension}"
            ]
        }
    ]
}

I click the debug, but it reports an error:

No member named 'to_array' in namespace 'std'

But when I compile it as follows:

clang++ -std=c++20 test.cpp

It succeeds.
So I need help. Why the debug fails? Thanks...

[ghost]

It works when I click the debug next time...
I don't know why?
I think this discussion can be deleted 🤣

[vx1day]

It makes me feel speechless. For the first time, use wsl2-ubuntu 20.04 lts (x86-64), install 13.0.1 through the script file officially provided by llvm, install plug-ins: Cland and codelldb in vscode, run the test code, and encounter the same error: no member named 'to_ array' in namespace 'std'

[vx1day]

I've even set up a remote [WSL: ubuntu-20.04] Add in settings.json file:

"clangd.fallbackFlags": [
"-std=c++20"
],

Restart, no effect, I have no choice, ready to roll back to C + + 17, and then use STD:: array <... > arr = {...}
After all, this is just the beginning of learning C + + for me.