commit a8b9793c8667d74b5086c7496dcd3a2491769b74
author drh <drh@noemail.net> Wed May 31 02:58:30 2017 +0000
committer drh <drh@noemail.net> Wed May 31 02:58:30 2017 +0000
tree a9ab76936195483710d0465bcb90895016a7350a
parent d03257c1417992a1b62b78f4885100f3faf60bd9

Avoid unnecessary memory zeroing during expression list allocation.

FossilOrigin-Name: de28e6514a42438411e2c9d833ba660108128ca86d0b90f32925fb73195f4862

src/expr.c

diff --git a/src/expr.c b/src/expr.c
index 707dfe4..27cebdb 100644
--- a/src/expr.c
+++ b/src/expr.c
@@ -1488,7 +1488,9 @@
     pList->nAlloc *= 2;
   }
   pItem = &pList->a[pList->nExpr++];
-  memset(pItem, 0, sizeof(*pItem));
+  assert( offsetof(struct ExprList_item,zName)==sizeof(pItem->pExpr) );
+  assert( offsetof(struct ExprList_item,pExpr)==0 );
+  memset(&pItem->zName,0,sizeof(*pItem)-offsetof(struct ExprList_item,zName));
   pItem->pExpr = pExpr;
   return pList;