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Overview
Comment: | Put an ALWAYS() on an unreachable branch in the sqlite3ExprListDup() routine. |
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Downloads: | Tarball | ZIP archive |
Timelines: | family | ancestors | descendants | both | rowvalue-update-trigger |
Files: | files | file ages | folders |
SHA1: |
2caaaab5e07f6b76d66fbe4e93a4b956 |
User & Date: | drh 2017-01-02 23:18:35.959 |
Context
2017-01-02
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23:43 | Test cases for the row-value UPDATE TRIGGER fix. (check-in: b9b964373c user: drh tags: rowvalue-update-trigger) | |
23:18 | Put an ALWAYS() on an unreachable branch in the sqlite3ExprListDup() routine. (check-in: 2caaaab5e0 user: drh tags: rowvalue-update-trigger) | |
22:36 | Proposed fix for the row-value TRIGGER UPDATE problem described in ticket [8c9458e7]. (check-in: 61a442ea2c user: drh tags: rowvalue-update-trigger) | |
Changes
Changes to src/expr.c.
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1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 | return 0; } pOldItem = p->a; for(i=0; i<p->nExpr; i++, pItem++, pOldItem++){ Expr *pOldExpr = pOldItem->pExpr; Expr *pNewExpr; pItem->pExpr = sqlite3ExprDup(db, pOldExpr, flags); if( pOldExpr && pOldExpr->op==TK_SELECT_COLUMN && (pNewExpr = pItem->pExpr)!=0 ){ assert( pNewExpr->iColumn==0 || i>0 ); if( pNewExpr->iColumn==0 ){ assert( pOldExpr->pLeft==pOldExpr->pRight ); pNewExpr->pLeft = pNewExpr->pRight; | > | | 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 | return 0; } pOldItem = p->a; for(i=0; i<p->nExpr; i++, pItem++, pOldItem++){ Expr *pOldExpr = pOldItem->pExpr; Expr *pNewExpr; pItem->pExpr = sqlite3ExprDup(db, pOldExpr, flags); assert( pItem->pExpr==0 || db->mallocFailed==0 ); if( pOldExpr && pOldExpr->op==TK_SELECT_COLUMN && (pNewExpr = pItem->pExpr)!=0 ){ assert( pNewExpr->iColumn==0 || i>0 ); if( pNewExpr->iColumn==0 ){ assert( pOldExpr->pLeft==pOldExpr->pRight ); pNewExpr->pLeft = pNewExpr->pRight; }else if( ALWAYS(pItem[-1].pExpr!=0) ){ pNewExpr->pLeft = pItem[-1].pExpr->pLeft; } } pItem->zName = sqlite3DbStrDup(db, pOldItem->zName); pItem->zSpan = sqlite3DbStrDup(db, pOldItem->zSpan); pItem->sortOrder = pOldItem->sortOrder; pItem->done = 0; |
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