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Allow instruction OP_OpenDup to duplicate cursors created by OP_OpenDup, as well as by OP_OpenEphemeral.

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FossilOrigin-Name: b8de980b2fb78088ef74e053cb987bb84319d13dc96ce1e89baaaa3fe8cf1efc
This commit is contained in:
dan
2021-03-18 13:42:53 +00:00
parent 176b04c476
commit 918232aadb
5 changed files with 26 additions and 15 deletions
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7
src/vdbe.c
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@@ -3873,7 +3873,7 @@ case OP_OpenDup: {
pOrig = p->apCsr[pOp->p2];
assert( pOrig );
assert( pOrig->pBtx!=0 ); /* Only ephemeral cursors can be duplicated */
assert( pOrig->isEphemeral ); /* Only ephemeral cursors can be duplicated */
pCx = allocateCursor(p, pOp->p1, pOrig->nField, -1, CURTYPE_BTREE);
if( pCx==0 ) goto no_mem;
@@ -3883,8 +3883,9 @@ case OP_OpenDup: {
pCx->isTable = pOrig->isTable;
pCx->pgnoRoot = pOrig->pgnoRoot;
pCx->isOrdered = pOrig->isOrdered;
rc = sqlite3BtreeCursor(pOrig->pBtx, pCx->pgnoRoot, BTREE_WRCSR,
pCx->pKeyInfo, pCx->uc.pCursor);
rc = sqlite3BtreeCursor(sqlite3BtreeGetBtree(pOrig->uc.pCursor),
pCx->pgnoRoot, BTREE_WRCSR, pCx->pKeyInfo, pCx->uc.pCursor
);
/* The sqlite3BtreeCursor() routine can only fail for the first cursor
** opened for a database. Since there is already an open cursor when this
** opcode is run, the sqlite3BtreeCursor() cannot fail */