D092 rc_overflow
On the WASM runtime, an object's reference count would pass 2^32 − 1.
A runtime defect: the running program stops with it; no compile phase reports it, and try cannot catch it. sakura explain D092 prints this explanation offline.
On the WASM runtime, an object's reference count would pass 2^32 − 1. The count is left
unchanged and the task ends with this defect instead of wrapping (runtime/rt/ABI.md §13).
Runtime defects come from running programs, so compiler/tests/ui has no fixture for them; the explanation above names the repair.