System information (version)

• OpenCV => 4.2.0
• Operating System / Platform => Ubuntu Mate aarch64
• Compiler => N/A (Python3)

Detailed description

In Python, when using cv2.FileStorage attempting to save the file to a folder which doesn't exist causes a segmentation fault.

Steps to reproduce

1. Run the following sample program with the makedirs line commented out.
2. Segmentation fault occurs

Running the same program with a folder which exists (e.g. uncomment the line to create the folder) works without error.

import cv2
import os

save_folder = os.path.join("work")
save_path = os.path.join(save_folder, f"test_file.yaml")

### Comment the following line out for a segmentation fault
# os.makedirs(save_folder, exist_ok = True)
###

cv_file = cv2.FileStorage(save_path, cv2.FILE_STORAGE_WRITE)
cv_file.write('K', 1)
cv_file.release()

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 solution
• I updated to latest OpenCV version and the issue is still there
• There is reproducer code and related data files: videos, images, onnx, etc