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commit    b1ab4bc52a1fd4f8bf396baf4c1ab0a4c32f9b49
Author:   Heikki Linnakangas <heikki.linnakangas@iki.fi>
Date:     Mon Jun 15 08:28:45 2026 +0000
First released in: 14.24, 15.19, 16.15, 17.11, 18.6

    Fix PQdescribePrepared with more than 7498 params
    
    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


 src/interfaces/libpq/fe-protocol3.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/interfaces/libpq/fe-protocol3.c b/src/interfaces/libpq/fe-protocol3.c
index 45b80455b0f..048851a3635 100644
--- a/src/interfaces/libpq/fe-protocol3.c
+++ b/src/interfaces/libpq/fe-protocol3.c
@@ -42,7 +42,8 @@
 	 (id) == PqMsg_FunctionCallResponse || \
 	 (id) == PqMsg_NoticeResponse || \
 	 (id) == PqMsg_NotificationResponse || \
-	 (id) == PqMsg_RowDescription)
+	 (id) == PqMsg_RowDescription || \
+	 (id) == PqMsg_ParameterDescription)
 
 
 static void handleFatalError(PGconn *conn);


[parent: e592535d224f]