[BUG] Cannot be executed without any error message.

[roydad]

Describe the bug

Some line cannot be executed without any error message

Code to reproduce the behaviour:

s = 3
print("yes++++++++++")
print(str(s) * 2)  # After this line is compiled to pyd, it cannot be executed without any error message.
print("yes----------")

Expected behaviour

OS

windows 11

Python version

3.11.5 amd64

Cython version

3.0.10

Additional context

msvc v140 or mingw64

when cython <= 3.0.a11 it work fine.

[da-woods]

It works correctly for me (on Linux)

[roydad]

It works correctly for me (on Linux)
@da-woods
This issue is only on Windows OS, and 3.0.a11 does not have this problem，I have verified that the same issue exists on other windows PC.

[da-woods]

It works correctly for me on Windows with MSVC.

[da-woods]

I'm afraid I can't reproduce it, so won't be able to do much. You might get some information from the faulthandler module (import faulthandler; faulthandler.enable()).

Otherwise it'd be a case of trying to catch the error in a C++ debugger. On Windows that'd be a case of starting Python, attaching the Python to the debugger from "debug -> attach to process" on the Visual Studio UI (not VS Code!), and the importing the module in Python.

[da-woods]

Alternatively you might be doing something odd in the buildpyd.py script. I'm testing just using cythonize -if hello.py where cythonize is a small tool that comes with Cython itself.

[roydad]

Alternatively you might be doing something odd in the buildpyd.py script. I'm testing just using cythonize -if hello.py where cythonize is a small tool that comes with Cython itself.

@da-woods You are right, the option should be language_level="3str" , but I wrote it as language_level=3
Thanks, the problem is solved.

[da-woods]

I'm reopening because I can reproduce it with language_level=3. There's definitely a bug but there wasn't enough information initially.

[da-woods]

In the master branch this fixed by 6fd204e although I don't think that can be backported.