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Make sure the left-shift operator never overflows. (CVS 6605)

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FossilOrigin-Name: 300da30178c46ab9f2ceb0c3e3ee3eac73d5d8e1
This commit is contained in:
drh
2009-05-05 15:46:43 +00:00
parent e289d6069a
commit 3500ed6650
5 changed files with 21 additions and 16 deletions
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3
src/where.c
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@@ -16,7 +16,7 @@
** so is applicable. Because this module is responsible for selecting
** indices, you might also think of this module as the "query optimizer".
**
** $Id: where.c,v 1.392 2009/05/01 21:13:37 drh Exp $
** $Id: where.c,v 1.393 2009/05/05 15:46:43 drh Exp $
*/
#include "sqliteInt.h"
@@ -384,6 +384,7 @@ static void whereSplit(WhereClause *pWC, Expr *pExpr, int op){
*/
static Bitmask getMask(WhereMaskSet *pMaskSet, int iCursor){
int i;
assert( pMaskSet->n<=sizeof(Bitmask)*8 );
for(i=0; i<pMaskSet->n; i++){
if( pMaskSet->ix[i]==iCursor ){
return ((Bitmask)1)<<i;