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Fix a case of a corrupt database causing SQLite to read from up to 4 bytes before the start of a memory allocation.

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FossilOrigin-Name: 7d2c4f7b6695806ab8ce0c6f49d8bc1d77a4320b
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dan
2015-05-25 20:04:15 +00:00
parent 08f901b008
commit c3e8ef1d0e
3 changed files with 8 additions and 7 deletions
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src/btree.c
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@@ -7777,6 +7777,7 @@ int sqlite3BtreeDelete(BtCursor *pCur){
unsigned char *pTmp;
pCell = findCell(pLeaf, pLeaf->nCell-1);
if( pCell<&pLeaf->aData[4] ) return SQLITE_CORRUPT_BKPT;
nCell = cellSizePtr(pLeaf, pCell);
assert( MX_CELL_SIZE(pBt) >= nCell );
pTmp = pBt->pTmpSpace;