BUG: Errors when upgrading to gcc version 15

[mvds314]

Describe the issue:

I am getting compiler errors when I upgrade from from gcc 14 to 15 (under Windows using the gcc compiler of MSYS2).

I don't understand the details, but according to ChatGpt:

When PyTensor generates its C++ extension code (mod.cpp), it includes NumPy headers with:

#define NPY_NO_DEPRECATED_API NPY_1_7_API_VERSION

With GCC 15, deprecated functions in NumPy's C-API now raise hard errors, whereas GCC 14 would compile with a warning.

Reproducable code example:

import pytensor
from pytensor import tensor as pt

a = pt.dscalar()
b = pt.dscalar()
c = a + b
f = pytensor.function([a, b], c)

assert 4.0 == f(1.5, 2.5)

Error message:

segmentation fault (core dumped) python

PyTensor version information:

2.30.3

Context for the issue:

No response

[ricardoV94]

May be related to #1398.

How did you install PyTensor?

Is there any error message/stacktrace?

ChatGPT answer is completely senseless, you would see a compile error in that case.

CC @maresb @lucianopaz

[maresb]

Hi @mvds314, please recreate your Conda environment. That will force gcc 14.

[ricardoV94]

Would still be useful to know if it's the same error or different

[maresb]

whereas GCC 14 would compile with a warning

Also what's the warning?