From 4929f46714988e0c125a7c8e0488a768920b9073 Mon Sep 17 00:00:00 2001
From: dimitr <dimitr@users.sourceforge.net>
Date: Tue, 14 Jul 2015 17:10:26 +0000
Subject: [PATCH] Fixed CORE-4710: invalid request BLR at offset 361 context
 already in use (BLR error).

---
 src/jrd/RecordSourceNodes.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/jrd/RecordSourceNodes.cpp b/src/jrd/RecordSourceNodes.cpp
index c4d579f3d93..a5dcb13202f 100644
--- a/src/jrd/RecordSourceNodes.cpp
+++ b/src/jrd/RecordSourceNodes.cpp
@@ -1336,6 +1336,9 @@ void AggregateSourceNode::genBlr(DsqlCompilerScratch* dsqlScratch)
 			ValueListNode* partitionRemapped = (*i)->partitionRemapped;
 			ValueListNode* order = (*i)->order;
 
+			if ((*i)->context > MAX_UCHAR)
+				ERRD_post(Arg::Gds(isc_too_many_contexts));
+
 			dsqlScratch->appendUChar((*i)->context);
 
 			if (partition)