fixup! test(core.utils): suppress PermissionError on reader's corrupt-write (Windows sharing race)

Author: cpcloud

cuda_core/tests/test_program_cache_multiprocess.py

@@ -159,8 +159,10 @@ def _worker_race_corrupt_reader(root: str, key: bytes, rounds: int, start_event,
         path = cache._path_for_key(key)
         for _ in range(rounds):
             # Best-effort corrupt write; ignore errors from the writer
-            # having the file replaced mid-write.
-            with contextlib.suppress(FileNotFoundError), open(path, "wb") as fh:
+            # having the file replaced mid-write. On Windows the rewriter's
+            # in-flight ``os.replace`` can also surface to the reader's open
+            # as ``PermissionError`` (sharing violation / pending-delete).
+            with contextlib.suppress(FileNotFoundError, PermissionError), open(path, "wb") as fh:
                 fh.write(b"\x00not-a-pickle")
             with contextlib.suppress(KeyError):
                 cache[key]