Fix crash in FinalizationRegistry when the observed object is GC'd #371
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In the pathological case shown in #367 both the object and the registry will be destroyed as part of the GC phase of JS_FreeRuntime. When the GC sweep happens it's possible we are holding on to a corpse so avoid calling the registry callback in that case. This is similar to how Weak{Map,Set} deal with iterators being freed as part of a cycle. Fixes: #367
bnoordhuis
approved these changes
Apr 12, 2024
Not quite. It's still an object, but it has no shape and in the next phase it will be freed. |
# for free
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In the pathological case shown in
#367 both the object and the registry will be destroyed as part of the GC phase of JS_FreeRuntime. When the GC sweep happens it's possible we are holding on to a corpse so avoid calling the registry callback in that case.
This is similar to how Weak{Map,Set} deal with iterators being freed as part of a cycle.
Fixes: #367