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Overview
Comment:Remove unreachable branches in expr.c, replacing them with assert() and testcase() statements.
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SHA1:9103c27ceb3f4023ea3a41b679a10717d3f80210
User & Date: drh 2013-08-06 16:56:44
Context
2013-08-06
17:24
Add a testcase() macro to verify OOM coverage. check-in: d43dcbc4 user: drh tags: trunk
16:56
Remove unreachable branches in expr.c, replacing them with assert() and testcase() statements. check-in: 9103c27c user: drh tags: trunk
14:36
For the ".import" command of the command-line shell, start a transaction if there is not one active already. check-in: 5dcc2d91 user: drh tags: trunk
Changes
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Changes to src/expr.c.

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        assert( (pExpr->iTable&0x0000FFFF)==pExpr->iTable );
        pExpr->x.pSelect->iLimit = 0;
        if( sqlite3Select(pParse, pExpr->x.pSelect, &dest) ){
          sqlite3DbFree(pParse->db, pKeyInfo);
          return 0;
        }
        pEList = pExpr->x.pSelect->pEList;


        if( pKeyInfo && ALWAYS(pEList!=0 && pEList->nExpr>0) ){ 
          pKeyInfo->aColl[0] = sqlite3BinaryCompareCollSeq(pParse, pExpr->pLeft,
              pEList->a[0].pExpr);
        }
      }else if( ALWAYS(pExpr->x.pList!=0) ){
        /* Case 2:     expr IN (exprlist)
        **
        ** For each expression, build an index key from the evaluation and
        ** store it in the temporary table. If <expr> is a column, then use
        ** that columns affinity when building index keys. If <expr> is not
        ** a column, use numeric affinity.







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        assert( (pExpr->iTable&0x0000FFFF)==pExpr->iTable );
        pExpr->x.pSelect->iLimit = 0;
        if( sqlite3Select(pParse, pExpr->x.pSelect, &dest) ){
          sqlite3DbFree(pParse->db, pKeyInfo);
          return 0;
        }
        pEList = pExpr->x.pSelect->pEList;
        assert( pKeyInfo!=0 ); /* OOM will exit after sqlite3Select() */
        assert( pEList!=0 );
        assert( pEList->nExpr>0 );
        pKeyInfo->aColl[0] = sqlite3BinaryCompareCollSeq(pParse, pExpr->pLeft,
                                                         pEList->a[0].pExpr);

      }else if( ALWAYS(pExpr->x.pList!=0) ){
        /* Case 2:     expr IN (exprlist)
        **
        ** For each expression, build an index key from the evaluation and
        ** store it in the temporary table. If <expr> is a column, then use
        ** that columns affinity when building index keys. If <expr> is not
        ** a column, use numeric affinity.