os.execvp on windows doesn't wait for the executed program to finish and doesn't report it's exit code

Bug report

os.execvp on windows doesn't wait for the executed program to finish and doesn't report it's exit code. Code:

import os
import sys

if len(sys.argv) > 1 and sys.argv[1] == "my_argument":
    sys.stderr.write("my_argument detected. Exiting with code 1.\n")
    sys.exit(1)
else:
    sys.stderr.write("no argument detected. Calling os.execvp\n")
    os.execvp(sys.executable, [sys.executable] + sys.argv + ["my_argument"])

bat file:

@echo off
python exec.py
if %errorlevel% NEQ 0 (
    echo The script gave exit code %errorlevel%
) else (
    echo Error: The script exited with exit code 0
)

Output from command prompt:

C:\pythonizer\play>exec.bat
no argument detected. Calling os.execvp
Error: The script exited with exit code 0

C:\pythonizer\play>my_argument detected. Exiting with code 1.

Note the command prompt prompted me for a new command before the exec'd process wrote out it's message.

Your environment

• CPython versions tested on: 3.10.6
• Operating system and architecture: Windows 10

まず、提供された Python スクリプトとバッチ ファイルを使って Windows 10 の動作を再現し、次に os.execvp のエントリポイントとその Windows 実装を追跡します。実行されたプログラムがバッチ ファイルの処理継続前に終了し、その 0 以外の終了コードが呼び出し元に報告されれば完了です。