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Overview
| Comment: | I was a little concerned about this check-in. Though I could not generate a failure myself, I thought it was risky. I checked it in for further testing. Then, overnight, OSSFuzz found a failure case for me. So the change is now moved out into a deadend branch. Was: Use OP_SCopy rather than OP_Copy to transfer results from a co-routine to its consumer. This undoes an earlier fix for ticket [98825a79ce] by check-in [ec6a06246e] because that problem no longer occurs due to WHERE clause push-down. |
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| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | mistake |
| Files: | files | file ages | folders |
| SHA3-256: |
0926df095faf72c26af3e6ed1117dfa4 |
| User & Date: | drh 2017-10-27 23:28:00 |
| Original Comment: | Use OP_SCopy rather than OP_Copy to transfer results from a co-routine to its consumer. This undoes an earlier fix for ticket [98825a79ce] by check-in [ec6a06246e] because that problem no longer occurs due to WHERE clause push-down. |
Context
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2017-10-27
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| 23:28 | I was a little concerned about this check-in. Though I could not generate a failure myself, I thought it was risky. I checked it in for further testing. Then, overnight, OSSFuzz found a failure case for me. So the change is now moved out into a deadend branch. Was: Use OP_SCopy rather than OP_Copy to transfer results from a co-routine to its consumer. This undoes an earlier fix for ticket [98825a79ce] by check-in [ec6a06246e] because that problem no longer occurs due to WHERE clause push-down. Closed-Leaf check-in: 0926df09 user: drh tags: mistake | |
| 18:24 | Fix a Pager ref-count leak in the sqlite_dbpage virtual table. check-in: c063bb04 user: drh tags: trunk | |
Changes
Changes to src/where.c.
526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 |
Vdbe *v = pParse->pVdbe;
VdbeOp *pOp = sqlite3VdbeGetOp(v, iStart);
int iEnd = sqlite3VdbeCurrentAddr(v);
if( pParse->db->mallocFailed ) return;
for(; iStart<iEnd; iStart++, pOp++){
if( pOp->p1!=iTabCur ) continue;
if( pOp->opcode==OP_Column ){
pOp->opcode = OP_Copy;
pOp->p1 = pOp->p2 + iRegister;
pOp->p2 = pOp->p3;
pOp->p3 = 0;
}else if( pOp->opcode==OP_Rowid ){
if( bIncrRowid ){
/* Increment the value stored in the P2 operand of the OP_Rowid. */
pOp->opcode = OP_AddImm;
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526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 |
Vdbe *v = pParse->pVdbe;
VdbeOp *pOp = sqlite3VdbeGetOp(v, iStart);
int iEnd = sqlite3VdbeCurrentAddr(v);
if( pParse->db->mallocFailed ) return;
for(; iStart<iEnd; iStart++, pOp++){
if( pOp->p1!=iTabCur ) continue;
if( pOp->opcode==OP_Column ){
pOp->opcode = OP_SCopy;
pOp->p1 = pOp->p2 + iRegister;
pOp->p2 = pOp->p3;
pOp->p3 = 0;
}else if( pOp->opcode==OP_Rowid ){
if( bIncrRowid ){
/* Increment the value stored in the P2 operand of the OP_Rowid. */
pOp->opcode = OP_AddImm;
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