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Overview
| Comment: | Put an ALWAYS() on an unreachable branch in the sqlite3ExprListDup() routine. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL 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 |
Context
|
2017-01-02
| ||
| 23:43 | Test cases for the row-value UPDATE TRIGGER fix. check-in: b9b96437 user: drh tags: rowvalue-update-trigger | |
| 23:18 | Put an ALWAYS() on an unreachable branch in the sqlite3ExprListDup() routine. check-in: 2caaaab5 user: drh tags: rowvalue-update-trigger | |
| 22:36 | Proposed fix for the row-value TRIGGER UPDATE problem described in ticket [8c9458e7]. check-in: 61a442ea user: drh tags: rowvalue-update-trigger | |
Changes
Changes to src/expr.c.
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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;
}else if( 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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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;
|