From 1120684ffea763480982858b2fedb2fb51e3d045 Mon Sep 17 00:00:00 2001
From: asfernandes <asfernandes@users.sourceforge.net>
Date: Wed, 12 Jan 2011 00:15:13 +0000
Subject: [PATCH] Backported fix for CORE-3306 - Invariant sub-query is treated
 as variant thus causing multiple invokations of a nested stored procedure

---
 src/jrd/cmp.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/jrd/cmp.cpp b/src/jrd/cmp.cpp
index 0aa57ed319..789d8b10a2 100644
--- a/src/jrd/cmp.cpp
+++ b/src/jrd/cmp.cpp
@@ -6446,6 +6446,11 @@ static bool stream_in_rse(USHORT stream, const RecordSelExpr* rse)
 				return true;		// do not mark as variant
 			}
 			break;
+		// procedures
+		case nod_procedure:
+			if (stream == (USHORT)(IPTR) sub->nod_arg[e_prc_stream])
+				return true;		// do not mark as variant
+			break;
 		}
 	}