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

diff --git a/src/interfaces/libpq/fe-protocol3.c b/src/interfaces/libpq/fe-protocol3.c
index 1d0199132970192d50f4472ad18dfd82c5c1a63a..3c6f927eac9e0f66f00a8bde33538996820a92a3 100644 (file)
--- a/src/interfaces/libpq/fe-protocol3.c
+++ b/src/interfaces/libpq/fe-protocol3.c
@@ -39,7 +39,7 @@
  */
 #define VALID_LONG_MESSAGE_TYPE(id) \
        ((id) == 'T' || (id) == 'D' || (id) == 'd' || (id) == 'V' || \
-        (id) == 'E' || (id) == 'N' || (id) == 'A')
+        (id) == 'E' || (id) == 'N' || (id) == 'A' || (id) == 't')
 
 
 static void handleSyncLoss(PGconn *conn, char id, int msgLength);