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Fix a problem in the fts3 matchinfo() function with corrupt database handling.

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FossilOrigin-Name: 24ed5fb6aea30b098d2faf3cf9d638933e518657217e903239ffaa1e25d34f66
This commit is contained in:
dan
2019-01-16 19:44:09 +00:00
parent 375afb8bda
commit e011ee2830
4 changed files with 241 additions and 13 deletions
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13
ext/fts3/fts3_snippet.c
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@ -1121,6 +1121,7 @@ static int fts3MatchinfoLcs(Fts3Cursor *pCsr, MatchInfo *pInfo){
int i;
int iCol;
int nToken = 0;
int rc = SQLITE_OK;
/* Allocate and populate the array of LcsIterator objects. The array
** contains one element for each matchable phrase in the query.
@ -1141,13 +1142,16 @@ static int fts3MatchinfoLcs(Fts3Cursor *pCsr, MatchInfo *pInfo){
int nLive = 0; /* Number of iterators in aIter not at EOF */
for(i=0; i<pInfo->nPhrase; i++){
int rc;
LcsIterator *pIt = &aIter[i];
rc = sqlite3Fts3EvalPhrasePoslist(pCsr, pIt->pExpr, iCol, &pIt->pRead);
if( rc!=SQLITE_OK ) return rc;
if( rc!=SQLITE_OK ) goto matchinfo_lcs_out;
if( pIt->pRead ){
pIt->iPos = pIt->iPosOffset;
fts3LcsIteratorAdvance(&aIter[i]);
fts3LcsIteratorAdvance(pIt);
if( pIt->pRead==0 ){
rc = FTS_CORRUPT_VTAB;
goto matchinfo_lcs_out;
}
nLive++;
}
}
@ -1179,8 +1183,9 @@ static int fts3MatchinfoLcs(Fts3Cursor *pCsr, MatchInfo *pInfo){
pInfo->aMatchinfo[iCol] = nLcs;
}
matchinfo_lcs_out:
sqlite3_free(aIter);
return SQLITE_OK;
return rc;
}
/*