cuda.core: Program.__dealloc__ crashes with AttributeError when construction failed before self._options was set #2876

Summary

Program.__dealloc__ (cuda_core/cuda/core/_program.pyx:103) always calls _cleanup_debug_source(), which unconditionally reads self._options._name (line 111). self._options is only assigned inside _init at line 867. If a Program object is garbage-collected after __cinit__/__new__ but before that assignment runs — for example an exception raised during construction — self._options is still None, and _cleanup_debug_source raises AttributeError: 'NoneType' object has no attribute '_name' from inside __dealloc__. Since __dealloc__ cannot propagate an exception, this surfaces as an unraisable exception via sys.unraisablehook.

Evidence

Seen in CI as a PytestUnraisableExceptionWarning from test_program_compile_cache.py:

Exception ignored in: Program.__dealloc__
AttributeError: 'NoneType' object has no attribute '_name'

First noticed while reviewing warnings surfaced by #2759's new reporting channel; the bug predates that PR.

Suggested fix

Guard the access: if self._nvrtc_name is not None and self._options is not None and self._nvrtc_name != self._options._name:. Worth checking whether other fields __dealloc__/_cleanup_debug_source touch have the same partial-construction gap.

Refs: found during review of #2759.