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Fix a potential problem with "INSERT INTO ... SELECT * FROM" (or VACUUM) statements on a corrupted database.

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FossilOrigin-Name: db4b4c2c1e9f1adacfb1b2fedb717a4d8bb0a299c3b11835404a99fcd67bf24b
This commit is contained in:
dan
2019-01-24 15:16:17 +00:00
parent 936ade4dba
commit b0c4c94996
5 changed files with 168 additions and 16 deletions
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7
src/btree.c
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@@ -804,11 +804,12 @@ static int btreeMoveto(
UnpackedRecord *pIdxKey; /* Unpacked index key */
if( pKey ){
KeyInfo *pKeyInfo = pCur->pKeyInfo;
assert( nKey==(i64)(int)nKey );
pIdxKey = sqlite3VdbeAllocUnpackedRecord(pCur->pKeyInfo);
pIdxKey = sqlite3VdbeAllocUnpackedRecord(pKeyInfo);
if( pIdxKey==0 ) return SQLITE_NOMEM_BKPT;
sqlite3VdbeRecordUnpack(pCur->pKeyInfo, (int)nKey, pKey, pIdxKey);
if( pIdxKey->nField==0 ){
sqlite3VdbeRecordUnpack(pKeyInfo, (int)nKey, pKey, pIdxKey);
if( pIdxKey->nField==0 || pIdxKey->nField>pKeyInfo->nAllField ){
rc = SQLITE_CORRUPT_BKPT;
goto moveto_done;
}