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Overview
| Comment: | Bug fix in sqlite3SelectDup(). Make sure the pNext pointer is valid. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | tree-explain |
| Files: | files | file ages | folders |
| SHA1: |
7e5b56b1c602d4adfd4496a9c877f3b6 |
| User & Date: | drh 2011-12-07 01:47:27 |
References
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2011-12-07
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| 01:55 | Cherrypick the [7e5b56b1c6] fix for the sqlite3SelectDup() routine into trunk. check-in: 7fc53509 user: drh tags: trunk | |
Context
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2011-12-07
| ||
| 15:33 | More compact notation for the parse-tree view. check-in: 0eb3f8b1 user: drh tags: tree-explain | |
| 01:47 | Bug fix in sqlite3SelectDup(). Make sure the pNext pointer is valid. check-in: 7e5b56b1 user: drh tags: tree-explain | |
| 01:23 | Improvements to the data-structure explain subsystem. Most queries now give a reasonably detailed graph of their parse tree. check-in: 0aa7d3d2 user: drh tags: tree-explain | |
Changes
Changes to src/expr.c.
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struct IdList_item *pOldItem = &p->a[i];
pNewItem->zName = sqlite3DbStrDup(db, pOldItem->zName);
pNewItem->idx = pOldItem->idx;
}
return pNew;
}
Select *sqlite3SelectDup(sqlite3 *db, Select *p, int flags){
Select *pNew;
if( p==0 ) return 0;
pNew = sqlite3DbMallocRaw(db, sizeof(*p) );
if( pNew==0 ) return 0;
pNew->pEList = sqlite3ExprListDup(db, p->pEList, flags);
pNew->pSrc = sqlite3SrcListDup(db, p->pSrc, flags);
pNew->pWhere = sqlite3ExprDup(db, p->pWhere, flags);
pNew->pGroupBy = sqlite3ExprListDup(db, p->pGroupBy, flags);
pNew->pHaving = sqlite3ExprDup(db, p->pHaving, flags);
pNew->pOrderBy = sqlite3ExprListDup(db, p->pOrderBy, flags);
pNew->op = p->op;
pNew->pPrior = sqlite3SelectDup(db, p->pPrior, flags);
pNew->pLimit = sqlite3ExprDup(db, p->pLimit, flags);
pNew->pOffset = sqlite3ExprDup(db, p->pOffset, flags);
pNew->iLimit = 0;
pNew->iOffset = 0;
pNew->selFlags = p->selFlags & ~SF_UsesEphemeral;
pNew->pRightmost = 0;
pNew->addrOpenEphm[0] = -1;
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struct IdList_item *pOldItem = &p->a[i];
pNewItem->zName = sqlite3DbStrDup(db, pOldItem->zName);
pNewItem->idx = pOldItem->idx;
}
return pNew;
}
Select *sqlite3SelectDup(sqlite3 *db, Select *p, int flags){
Select *pNew, *pPrior;
if( p==0 ) return 0;
pNew = sqlite3DbMallocRaw(db, sizeof(*p) );
if( pNew==0 ) return 0;
pNew->pEList = sqlite3ExprListDup(db, p->pEList, flags);
pNew->pSrc = sqlite3SrcListDup(db, p->pSrc, flags);
pNew->pWhere = sqlite3ExprDup(db, p->pWhere, flags);
pNew->pGroupBy = sqlite3ExprListDup(db, p->pGroupBy, flags);
pNew->pHaving = sqlite3ExprDup(db, p->pHaving, flags);
pNew->pOrderBy = sqlite3ExprListDup(db, p->pOrderBy, flags);
pNew->op = p->op;
pNew->pPrior = pPrior = sqlite3SelectDup(db, p->pPrior, flags);
if( pPrior ) pPrior->pNext = pNew;
pNew->pNext = 0;
pNew->pLimit = sqlite3ExprDup(db, p->pLimit, flags);
pNew->pOffset = sqlite3ExprDup(db, p->pOffset, flags);
pNew->iLimit = 0;
pNew->iOffset = 0;
pNew->selFlags = p->selFlags & ~SF_UsesEphemeral;
pNew->pRightmost = 0;
pNew->addrOpenEphm[0] = -1;
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