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Fix an assertion failure in fts3 triggered by a corrupt database.

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FossilOrigin-Name: 560ebd4269fad07b8e988d070454017123593eb6762597d08e8c32d7b4fb92ac
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dan
2019-02-03 07:46:07 +00:00
parent 150edadf58
commit 41fc545147
4 changed files with 239 additions and 14 deletions
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13
ext/fts3/fts3_snippet.c
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@ -476,11 +476,14 @@ static int fts3SnippetFindPositions(Fts3Expr *pExpr, int iPhrase, void *ctx){
int iFirst = 0;
pPhrase->pList = pCsr;
fts3GetDeltaPosition(&pCsr, &iFirst);
assert( iFirst>=0 );
pPhrase->pHead = pCsr;
pPhrase->pTail = pCsr;
pPhrase->iHead = iFirst;
pPhrase->iTail = iFirst;
if( iFirst<0 ){
rc = FTS_CORRUPT_VTAB;
}else{
pPhrase->pHead = pCsr;
pPhrase->pTail = pCsr;
pPhrase->iHead = iFirst;
pPhrase->iTail = iFirst;
}
}else{
assert( rc!=SQLITE_OK || (
pPhrase->pList==0 && pPhrase->pHead==0 && pPhrase->pTail==0