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Prevent sub-queries with "LIMIT 0" from leaving an extra value on the vdbe stack. Also updates to fuzz.test. (CVS 3993)

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FossilOrigin-Name: b1d1b16e9857a1c05f60cf2ae15f5a534b0dd0ac
This commit is contained in:
danielk1977
2007-05-14 14:04:59 +00:00
parent 8fea1285f0
commit 1e4eaeb515
4 changed files with 216 additions and 59 deletions
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5
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 1.345 2007/05/14 11:34:47 drh Exp $
** $Id: select.c,v 1.346 2007/05/14 14:05:00 danielk1977 Exp $
*/
#include "sqliteInt.h"
@@ -1520,9 +1520,10 @@ static void computeLimitRegisters(Parse *pParse, Select *p, int iBreak){
if( v==0 ) return;
sqlite3ExprCode(pParse, p->pLimit);
sqlite3VdbeAddOp(v, OP_MustBeInt, 0, 0);
sqlite3VdbeAddOp(v, OP_MemStore, iLimit, 0);
sqlite3VdbeAddOp(v, OP_MemStore, iLimit, 1);
VdbeComment((v, "# LIMIT counter"));
sqlite3VdbeAddOp(v, OP_IfMemZero, iLimit, iBreak);
sqlite3VdbeAddOp(v, OP_MemLoad, iLimit, 0);
}
if( p->pOffset ){
p->iOffset = iOffset = pParse->nMem++;