On 4/23/25 09:41, Frédéric Yhuel wrote:


On 4/22/25 19:37, Sami Imseih wrote:
the patch relies on looking up queryDesc->sourceText inside DropPortal,
which Tom raised concerns about earlier in the thread [0]

Yes, I think I had misunderstood what Tom said. Thank you for pointing that out.

However, is it really unsafe?

In exec_bind_message, the portal's query string comes from a duplicate of the original string (see CreateCachedPlan). So we are safe in this case.

In exec_simple_query, the portal is dropped towards the end of this function, so we are safe here too.

Am I missing something?

Note: the patch doesn't work well with server-side prepared statements: the PREPARE query is blamed instead of the EXECUTE one. But this is maybe something that can be fixed easily.


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