This SQL:
drop table if exists t11;
CREATE VIRTUAL TABLE t11 USING fts4;
INSERT INTO t11 VALUES('quitealongstringoftext');
INSERT INTO t11 VALUES('anotherquitealongstringoftext');
UPDATE t11_stat SET value = X'0000';
SELECT matchinfo(t11, 'nxa') FROM t11 WHERE t11 MATCH 'a*';
leads to a division by zero exception in fts3_snippet.c, line 1171:
pInfo->aMatchinfo[iCol] = (u32)(((u32)(nToken&0xffffffff)+nDoc/2)/nDoc);
nDoc is zero here, which is not tested for, but I believe it should.
Ralf
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