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Put an ALWAYS() on an unreachable branch in the sqlite3ExprListDup() routine.

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FossilOrigin-Name: 2caaaab5e07f6b76d66fbe4e93a4b956937427d8
This commit is contained in:
drh
2017-01-02 23:18:35 +00:00
parent 47073f62bf
commit 3f50bb84f5
3 changed files with 9 additions and 11 deletions
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3
src/expr.c
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@@ -1311,6 +1311,7 @@ ExprList *sqlite3ExprListDup(sqlite3 *db, ExprList *p, int flags){
Expr *pOldExpr = pOldItem->pExpr;
Expr *pNewExpr;
pItem->pExpr = sqlite3ExprDup(db, pOldExpr, flags);
assert( pItem->pExpr==0 || db->mallocFailed==0 );
if( pOldExpr
&& pOldExpr->op==TK_SELECT_COLUMN
&& (pNewExpr = pItem->pExpr)!=0
@@ -1319,7 +1320,7 @@ ExprList *sqlite3ExprListDup(sqlite3 *db, ExprList *p, int flags){
if( pNewExpr->iColumn==0 ){
assert( pOldExpr->pLeft==pOldExpr->pRight );
pNewExpr->pLeft = pNewExpr->pRight;
}else if( pItem[-1].pExpr!=0 ){
}else if( ALWAYS(pItem[-1].pExpr!=0) ){
pNewExpr->pLeft = pItem[-1].pExpr->pLeft;
}
}