Fix for ticket #3382 was mistakenly removed by (5712). Add an assert to

prevent it from being removed again. (CVS 5733)

FossilOrigin-Name: 01d26b3df7029f7fa09231c18a7b9f9a1a967916

src/select.c

@@ -12,7 +12,7 @@
 ** This file contains C code routines that are called by the parser
 ** to handle SELECT statements in SQLite.
 **
-** $Id: select.c,v 1.475 2008/09/17 00:13:12 drh Exp $
+** $Id: select.c,v 1.476 2008/09/23 09:36:10 drh Exp $
 */
 #include "sqliteInt.h"
 
@@ -2047,7 +2047,7 @@ static int multiSelectOrderBy(
   int labelEnd;         /* Label for the end of the overall SELECT stmt */
   int j1;               /* Jump instructions that get retargetted */
   int op;               /* One of TK_ALL, TK_UNION, TK_EXCEPT, TK_INTERSECT */
-  KeyInfo *pKeyDup;     /* Comparison information for duplicate removal */
+  KeyInfo *pKeyDup = 0; /* Comparison information for duplicate removal */
   KeyInfo *pKeyMerge;   /* Comparison information for merging rows */
   sqlite3 *db;          /* Database connection */
   ExprList *pOrderBy;   /* The ORDER BY clause */
@@ -2055,6 +2055,7 @@ static int multiSelectOrderBy(
   int *aPermute;        /* Mapping from ORDER BY terms to result set columns */
 
   assert( p->pOrderBy!=0 );
+  assert( pKeyDup==0 ); /* "Managed" code needs this.  Ticket #3382. */
   db = pParse->db;
   v = pParse->pVdbe;
   if( v==0 ) return SQLITE_NOMEM;