8232214: Improved internal validations

Reviewed-by: ghb, rhalade

Author: kevinrushforth

modules/javafx.web/src/main/native/Source/ThirdParty/sqlite/sqlite3.c

@@ -105489,7 +105489,9 @@ static void decodeIntArray(
       if( sqlite3_strglob("unordered*", z)==0 ){
         pIndex->bUnordered = 1;
       }else if( sqlite3_strglob("sz=[0-9]*", z)==0 ){
-        pIndex->szIdxRow = sqlite3LogEst(sqlite3Atoi(z+3));
+        int sz = sqlite3Atoi(z+3);
+        if( sz<2 ) sz = 2;
+        pIndex->szIdxRow = sqlite3LogEst(sz);
       }else if( sqlite3_strglob("noskipscan*", z)==0 ){
         pIndex->noSkipScan = 1;
       }
@@ -142704,6 +142706,7 @@ static int whereLoopAddBtreeIndex(
     ** it to pNew->rRun, which is currently set to the cost of the index
     ** seek only. Then, if this is a non-covering index, add the cost of
     ** visiting the rows in the main table.  */
+    assert( pSrc->pTab->szTabRow>0 );
     rCostIdx = pNew->nOut + 1 + (15*pProbe->szIdxRow)/pSrc->pTab->szTabRow;
     pNew->rRun = sqlite3LogEstAdd(rLogSize, rCostIdx);
     if( (pNew->wsFlags & (WHERE_IDX_ONLY|WHERE_IPK))==0 ){