commit e1a836933f3ca25d8033cedb67a04df845d69750
author Juan Lang <juan.lang@gmail.com> Thu Nov 15 11:06:07 2007 -0800
committer Alexandre Julliard <julliard@winehq.org> Fri Nov 16 12:36:01 2007 +0100
tree b2dd139416d9ec6561a5746c1d1d5a6b2f54e0f8
parent 9ec6e33e32fa9f4c0353c1f59c01c5f2ff792d97

iphlpapi: Don't allocate gobs of memory if the IP address table is empty.

dlls/iphlpapi/ifenum.c

diff --git a/dlls/iphlpapi/ifenum.c b/dlls/iphlpapi/ifenum.c
index 1ae70df..0a74ef6 100644
--- a/dlls/iphlpapi/ifenum.c
+++ b/dlls/iphlpapi/ifenum.c
@@ -746,8 +746,11 @@
     ret = enumIPAddresses(&numAddresses, &ifc);
     if (!ret)
     {
-      *ppIpAddrTable = HeapAlloc(heap, flags, sizeof(MIB_IPADDRTABLE) +
-       (numAddresses - 1) * sizeof(MIB_IPADDRROW));
+      DWORD size = sizeof(MIB_IPADDRTABLE);
+
+      if (numAddresses > 1)
+        size += (numAddresses - 1) * sizeof(MIB_IPADDRROW);
+      *ppIpAddrTable = HeapAlloc(heap, flags, size);
       if (*ppIpAddrTable) {
         DWORD i = 0, bcast;
         caddr_t ifPtr;