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Memory Leak (global handles) when passing null as opaque argument to produce() #1127
Description
https://github.com/Blizzard/node-rdkafka/blob/master/src/producer.cc#L559
We're seen a memory leak passing null as the opaque argument to produce.
This was subtle and tough to debug, and is quite surprising behavior.
I think the 5th argument check should also include !IsNull much like the 4th argument.
Otherwise, global (persistent) handles are leaked wrapping a null value, which doesn't make sense.
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[-]Memory Leak (global handles) when passing null as opaque to produce()[/-][+]Memory Leak (global handles) when passing null as opaque argument to produce()[/+]Diamondlord commentedon Nov 3, 2025
We also confirmed the memory leak occurs when an empty string ("") is passed for the
opaqueargument. This was discovered because opaque is before theheadersargument we use for tracing propagation.