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Overview
| Comment: | Fix an uninitialized variable in the Prev and Next opcodes. (CVS 4873) |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
fcf3d0a3d5d3a71155ab0aa5f533da72 |
| User & Date: | drh 2008-03-17 17:18:38 |
Context
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2008-03-17
| ||
| 19:03 | Version 3.5.7 (CVS 4874) check-in: 9a6583d3 user: drh tags: trunk | |
| 17:18 | Fix an uninitialized variable in the Prev and Next opcodes. (CVS 4873) check-in: fcf3d0a3 user: drh tags: trunk | |
| 17:08 | Abandon the OR optimization following a memory allocation failure, to avoid referencing uninitialized memory. (CVS 4872) check-in: 9d2afbb5 user: drh tags: trunk | |
Changes
Changes to src/vdbe.c.
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** ** Various scripts scan this source file in order to generate HTML ** documentation, headers files, or other derived files. The formatting ** of the code in this file is, therefore, important. See other comments ** in this file for details. If in doubt, do not deviate from existing ** commenting and indentation practices when changing or adding code. ** ** $Id: vdbe.c,v 1.710 2008/03/17 16:54:02 drh Exp $ */ #include "sqliteInt.h" #include <ctype.h> #include "vdbeInt.h" /* ** The following global variable is incremented every time a cursor ................................................................................ ** ** The P1 cursor must be for a real table, not a pseudo-table. */ case OP_Prev: /* jump */ case OP_Next: { /* jump */ Cursor *pC; BtCursor *pCrsr; int res; CHECK_FOR_INTERRUPT; assert( pOp->p1>=0 && pOp->p1<p->nCursor ); pC = p->apCsr[pOp->p1]; if( pC==0 ){ break; /* See ticket #2273 */ } pCrsr = pC->pCursor; assert( pCrsr ); if( pC->nullRow ){ res = 1; }else{ assert( pC->deferredMoveto==0 ); rc = pOp->opcode==OP_Next ? sqlite3BtreeNext(pCrsr, &res) : sqlite3BtreePrevious(pCrsr, &res); pC->nullRow = res; pC->cacheStatus = CACHE_STALE; if( res==0 ){ pc = pOp->p2 - 1; |
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** ** Various scripts scan this source file in order to generate HTML ** documentation, headers files, or other derived files. The formatting ** of the code in this file is, therefore, important. See other comments ** in this file for details. If in doubt, do not deviate from existing ** commenting and indentation practices when changing or adding code. ** ** $Id: vdbe.c,v 1.711 2008/03/17 17:18:38 drh Exp $ */ #include "sqliteInt.h" #include <ctype.h> #include "vdbeInt.h" /* ** The following global variable is incremented every time a cursor ................................................................................ ** ** The P1 cursor must be for a real table, not a pseudo-table. */ case OP_Prev: /* jump */ case OP_Next: { /* jump */ Cursor *pC; BtCursor *pCrsr; CHECK_FOR_INTERRUPT; assert( pOp->p1>=0 && pOp->p1<p->nCursor ); pC = p->apCsr[pOp->p1]; if( pC==0 ){ break; /* See ticket #2273 */ } pCrsr = pC->pCursor; assert( pCrsr ); if( pC->nullRow==0 ){ int res = 1; assert( pC->deferredMoveto==0 ); rc = pOp->opcode==OP_Next ? sqlite3BtreeNext(pCrsr, &res) : sqlite3BtreePrevious(pCrsr, &res); pC->nullRow = res; pC->cacheStatus = CACHE_STALE; if( res==0 ){ pc = pOp->p2 - 1; |