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Make sure nested queries with USING clauses do not leak memory.

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Preliminary fix for ticket #3911. (CVS 6750)

FossilOrigin-Name: bd341a103c25395b1189d05edebfe4af8a943941
This commit is contained in:
drh
2009-06-12 03:27:26 +00:00
parent d3ec02d38e
commit c3a8402a94
4 changed files with 68 additions and 8 deletions
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3
src/select.c
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@@ -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 1.523 2009/06/01 16:53:10 shane Exp $
** $Id: select.c,v 1.524 2009/06/12 03:27:27 drh Exp $
*/
#include "sqliteInt.h"
@@ -2797,6 +2797,7 @@ static int flattenSubquery(
** outer query.
*/
for(i=0; i<nSubSrc; i++){
sqlite3IdListDelete(db, pSrc->a[i+iFrom].pUsing);
pSrc->a[i+iFrom] = pSubSrc->a[i];
memset(&pSubSrc->a[i], 0, sizeof(pSubSrc->a[i]));
}