Bug report
Bug description:
"msvcrt.getch() returns EOF sentinel as data when no console is attached" --body "## Summary
On Windows, `msvcrt.getch()` returns the CRT EOF sentinel as normal Python data when no console is attached, instead of raising `OSError`.
Reproducer
```powershell
PCbuild\amd64\python_d.exe -c "import ctypes, msvcrt, sys; ctypes.windll.kernel32.FreeConsole(); sys.exit(0 if msvcrt.getch() == b'\xff' else 1)"
echo $LASTEXITCODE \``
Actual result:
`$LASTEXITCODE` is `0`
This means `msvcrt.getch()` returned `b'\xff'` after `FreeConsole()`.
Expected behavior
If `_getch()` fails because no console is attached, the Python wrapper should raise `OSError` instead of returning `b'\xff'`.
Environment
- OS: Windows 11
- Build: CPython debug build
- Command used to build: `PCbuild\build.bat -c Debug`"
CPython versions tested on:
3.15
Operating systems tested on:
Windows
Linked PRs
Bug report
Bug description:
"msvcrt.getch() returns EOF sentinel as data when no console is attached" --body "## Summary
On Windows, `msvcrt.getch()` returns the CRT EOF sentinel as normal Python data when no console is attached, instead of raising `OSError`.
Reproducer
```powershell
PCbuild\amd64\python_d.exe -c "import ctypes, msvcrt, sys; ctypes.windll.kernel32.FreeConsole(); sys.exit(0 if msvcrt.getch() == b'\xff' else 1)"
echo
$LASTEXITCODE \``Actual result:
`$LASTEXITCODE` is `0`
This means `msvcrt.getch()` returned `b'\xff'` after `FreeConsole()`.
Expected behavior
If `_getch()` fails because no console is attached, the Python wrapper should raise `OSError` instead of returning `b'\xff'`.
Environment
CPython versions tested on:
3.15
Operating systems tested on:
Windows
Linked PRs