87 lines
2.1 KiB
Python
87 lines
2.1 KiB
Python
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#!/usr/bin/env python3
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"""Minimal reproduction of segfault when calling subclass method callback.
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The issue: When a Frame subclass assigns self.on_click = self._on_click,
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reading it back works but there's a segfault during cleanup.
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"""
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import mcrfpy
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import sys
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import gc
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class MyFrame(mcrfpy.Frame):
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def __init__(self, **kwargs):
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super().__init__(**kwargs)
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self.on_click = self._on_click
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def _on_click(self, pos, button, action):
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print(f"Clicked at {pos}, button={button}, action={action}")
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def test_minimal():
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"""Minimal test case."""
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print("Creating MyFrame...")
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obj = MyFrame(pos=(100, 100), size=(100, 100))
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print(f"Reading on_click: {obj.on_click}")
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print(f"Type: {type(obj.on_click)}")
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print("Attempting to call on_click...")
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try:
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obj.on_click((50, 50), "left", "start")
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print("Call succeeded!")
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except Exception as e:
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print(f"Exception: {type(e).__name__}: {e}")
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print("Clearing callback...")
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obj.on_click = None
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print("Deleting object...")
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del obj
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print("Running GC...")
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gc.collect()
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print("About to exit...")
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sys.exit(0)
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def test_without_callback_clear():
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"""Test without clearing callback first."""
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print("Creating MyFrame...")
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obj = MyFrame(pos=(100, 100), size=(100, 100))
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print("Calling...")
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obj.on_click((50, 50), "left", "start")
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print("Deleting without clearing callback...")
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del obj
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gc.collect()
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print("About to exit...")
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sys.exit(0)
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def test_added_to_scene():
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"""Test when added to scene."""
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print("Creating scene and MyFrame...")
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scene = mcrfpy.Scene("test")
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obj = MyFrame(pos=(100, 100), size=(100, 100))
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scene.children.append(obj)
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print("Calling via scene.children[0]...")
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scene.children[0].on_click((50, 50), "left", "start")
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print("About to exit...")
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sys.exit(0)
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if __name__ == "__main__":
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# Try different scenarios
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import sys
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if len(sys.argv) > 1:
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if sys.argv[1] == "2":
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test_without_callback_clear()
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elif sys.argv[1] == "3":
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test_added_to_scene()
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else:
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test_minimal()
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