Hello developers, We found a testcase causing a SQLite crash exception: ``` CREATE TABLE t0(a PRIMARY KEY,b CHAR(30) AS(1) UNIQUE) WITHOUT ROWID; SELECT * FROM t0 JOIN t0 AS ra0 ON unlikely(ra0.a=t0.a) AND t0.b='iii' WHERE ra0.a=false OR t0.b LIKE '.' AND t0.a=ra0.b; ``` We simply analyzed the cause of the crash, locating it in the function isLikeOrGlob(). In this line: `|| IsVirtual(pLeft->y.pTab) /* Value might be numeric */` `pLeft->y.pTab` is a NULL pointer, and the use of macro: `# define IsVirtual(X) ((X)->eTabType==TABTYP_VTAB)` triggers the segmentation fault. Bisecting shows the problem may be related to [check-in b99d570131](https://sqlite.org/src/info/b99d570131).