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Fix a crash that could occur in fts3 when processing a corrupt database.

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FossilOrigin-Name: 2fad2a89527757b3956538a6bf91ebebe9c483f22f94e889e8b50c58f5100c5c
This commit is contained in:
dan
2021-11-04 18:04:55 +00:00
parent de3fd373a1
commit 3555274419
6 changed files with 254 additions and 14 deletions
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8
ext/fts3/fts3_snippet.c
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@ -1632,13 +1632,13 @@ void sqlite3Fts3Offsets(
const char *zDoc;
int nDoc;
/* Initialize the contents of sCtx.aTerm[] for column iCol. There is
** no way that this operation can fail, so the return code from
** fts3ExprIterate() can be discarded.
/* Initialize the contents of sCtx.aTerm[] for column iCol. This
** operation may fail if the database contains corrupt records.
*/
sCtx.iCol = iCol;
sCtx.iTerm = 0;
(void)fts3ExprIterate(pCsr->pExpr, fts3ExprTermOffsetInit, (void*)&sCtx);
rc = fts3ExprIterate(pCsr->pExpr, fts3ExprTermOffsetInit, (void*)&sCtx);
if( rc!=SQLITE_OK ) goto offsets_out;
/* Retreive the text stored in column iCol. If an SQL NULL is stored
** in column iCol, jump immediately to the next iteration of the loop.