BUG: dereferencing pointer to incomplete type ‘PyFrameObject’

Describe the issue:

Build Failed for Python3.11

Reproduce the code example:

python3.11 -m pip install git+https://github.com/numpy/numpy

Error message:

numpy/random/_mt19937.c: In function ‘__Pyx_AddTraceback’:
      numpy/random/_mt19937.c:438:62: error: dereferencing pointer to incomplete type ‘PyFrameObject’ {aka ‘struct _frame’}
        438 |   #define __Pyx_PyFrame_SetLineNumber(frame, lineno)  (frame)->f_lineno = (lineno)

NumPy/Python version information:

Python 3.11.0a7+ (main, Apr 19 2022, 09:05:09) [GCC 9.4.0] on linux

[mattip]

For people who don’t want to click on a random link, it leads to a paste-bin site with the log from the build. The first line is python3.11 -m pip install cython==3.0.0a10. @SmartManoj You need to use cython HEAD: python3.11 -m pip install git+https://github.com/cython/cython@master. See this comment.

[seberg]

Going to close this, since this is in generated cython code and Cython seems to have fixed the specific issue (probably included in the new version that just came in). It seems likely that Cython isn’t yet fully compatible with 3.11, but there really isn’t much to do about it from our side I think (although a note may be helpful).