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Fix PQdescribePrepared with more than 7498 params

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If a query has more than 7498 params, the ParameterDescription message
exceeds the 30000 byte limit on messages that are not specifically
marked as possibly being longer than that (VALID_LONG_MESSAGE_TYPE).
To fix, add ParameterDescription to the list.

Author: Ning Sun <classicning@gmail.com>
Discussion: https://www.postgresql.org/message-id/dbfb4b65-0aa8-470a-8b87-b6496160b28a@gmail.com
Backpatch-through: 14
This commit is contained in:
Heikki Linnakangas 2026-06-15 11:28:45 +03:00
parent 3928b7a520
commit e4183c667d
1 changed files with 2 additions and 1 deletions
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3
src/interfaces/libpq/fe-protocol3.c
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@ -42,7 +42,8 @@
(id) == PqMsg_FunctionCallResponse || \
(id) == PqMsg_NoticeResponse || \
(id) == PqMsg_NotificationResponse || \
(id) == PqMsg_RowDescription)
(id) == PqMsg_RowDescription || \
(id) == PqMsg_ParameterDescription)
static void handleSyncLoss(PGconn *conn, char id, int msgLength);