Python: reference leak in pyopencv_to modules/python/src2/cv2_convert.cpp #28046
Description
System Information
OpenCV python version: 4.11.0.86
Operating System / Platform: Oracle Linux 8 x86_64
Python version: 3.14.0
Detailed description
The call to PyOS_FSPath returns a new strong reference but Py_XDECREF is never called on that returned value.
opencv/modules/python/src2/cv2_convert.cpp
Line 716 in f627368
Steps to reproduce
build python with --with-address-sanitizer & --without-pymalloc to get a working leak sanitiser.
from pathlib import Path
import cv2
cv2.imread(Path("image.jpg"))
LeakSanitizer will report a leak for a memory block allocated by a call to PyOS_FSPath.
Running with a string rather than a Path will report the leak coming from elsewhere (as PyOS_FSPath is just a ref count increment in this case)
Any function argument annotated with CV_WRAP_FILE_PATH will leak, cv2.imread is just one of them.
Issue submission checklist
- I report the issue, it's not a question
- I checked the problem with documentation, FAQ, open issues, forum.opencv.org, Stack Overflow, etc and have not found any solution
- I updated to the latest OpenCV version and the issue is still there
- There is reproducer code and related data files (videos, images, onnx, etc)