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In btree.c, save the positions of other cursors open on the same table when writing via an incremental blob handle. Otherwise, they may be left holding an out-of-date xFetch page reference.

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FossilOrigin-Name: 3f09fba18f7e61e21381ffea13c31b968efd7d77
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dan
2013-04-03 11:17:39 +00:00
parent 2b8246e3e2
commit 227a1c482c
4 changed files with 69 additions and 9 deletions
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9
src/btree.c
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@@ -8400,6 +8400,15 @@ int sqlite3BtreePutData(BtCursor *pCsr, u32 offset, u32 amt, void *z){
return SQLITE_ABORT;
}
/* Save the positions of all other cursors open on this table. This is
** required in case any of them are holding references to an xFetch
** version of the b-tree page modified by the accessPayload call below.
*/
rc = saveAllCursors(pCsr->pBt, pCsr->pgnoRoot, pCsr);
if( rc!=SQLITE_OK ){
return SQLITE_OK;
}
/* Check some assumptions:
** (a) the cursor is open for writing,
** (b) there is a read/write transaction open,