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Re: Possible dereference null return (src/backend/replication/logical/reorderbuffer.c) - Mailing list pgsql-hackers

From Ranier Vilela
Subject Re: Possible dereference null return (src/backend/replication/logical/reorderbuffer.c)
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Msg-id CAEudQArcFOF0O5_+K6nMzdQC+38j2UTQoiBcv7LTKxTESdVb8g@mail.gmail.com
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In response to Re: Possible dereference null return (src/backend/replication/logical/reorderbuffer.c)  (Ranier Vilela <ranier.vf@gmail.com>)
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Em sáb., 13 de fev. de 2021 às 17:35, Ranier Vilela <ranier.vf@gmail.com> escreveu:

Em sáb., 13 de fev. de 2021 às 01:07, Zhihong Yu <zyu@yugabyte.com> escreveu:
Hi,
How about the following patch ?

ReorderBufferSetBaseSnapshot() can return a bool to indicate whether the base snapshot is set up.

For the call by SnapBuildCommitTxn(), it seems xid is top transaction. So the return value doesn't need to be checked.
IMO anything else is better than PANIC.
Anyway, if all fails, reporting an error can contribute to checking where.

Attached a patch suggestion v2.
Sorry, I forgot to mention, it is based on a patch from Zhihong Yu.

regards,
Ranier Vilela

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