The PRAGMA integrity_check at the end of the following sequence of code
reports a "wrong # of entries" error, even though the database is intact
and correct.

<blockquote><verbatim>
CREATE TABLE Table1 (col TEXT NOT NULL PRIMARY KEY);
ATTACH ':memory:' AS db2;
CREATE TABLE db2.Table2(col1 INTEGER, col2 INTEGER, col3 INTEGER, col4 INTEGER);
CREATE UNIQUE INDEX db2.idx_col1_unique ON Table2 (col1);
CREATE UNIQUE INDEX db2.idx_col23_unique ON Table2 (col2, col3);
CREATE INDEX db2.idx_col2 ON Table2 (col2);
INSERT INTO Table2 VALUES(1,2,3,4);
PRAGMA integrity_check;


Bisecting shows that the problem first appeared with check-in [88439a866]
on 2016-0319 and was first
released with SQLite 3.12.0 on 2016-03-29

This problem was reported on the sqlite-users mailing list by
Brendan E. Coughlan.