Better than removing the incorrect assert() is to change it into a

testcase() together with a comment indicating where an appropriate test case
can be found, and the ticket that provoked the change.
Ticket [614b25314c766238]

FossilOrigin-Name: 3e3c60d8124672ff72a57dfa2e51276316bcac8c8ae8a5739da358f26924b0fb

src/wherecode.c

@@ -2150,6 +2150,9 @@ Bitmask sqlite3WhereCodeOneLoopStart(
         WhereInfo *pSubWInfo;           /* Info for single OR-term scan */
         Expr *pOrExpr = pOrTerm->pExpr; /* Current OR clause term */
         int jmp1 = 0;                   /* Address of jump operation */
+        testcase( (pTabItem[0].fg.jointype & JT_LEFT)!=0
+               && !ExprHasProperty(pOrExpr, EP_FromJoin)
+        ); /* See TH3 vtab25.400 and ticket 614b25314c766238 */
         if( pAndExpr ){
           pAndExpr->pLeft = pOrExpr;
           pOrExpr = pAndExpr;