POSIX: re-enable strict aliasing

net/tools/quic/quic_socket_utils.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/tools/quic/quic_socket_utils.h"
 
 #include <errno.h>
 #include <netinet/in.h>
 #include <string.h>
 #include <sys/socket.h>
@@ skipping 25 matching lines @@
       }
       ret.assign(addr_data, addr_data + len);
       break;
     }
   }
   return ret;
 }
 
 // static
 bool QuicSocketUtils::GetOverflowFromMsghdr(struct msghdr *hdr,
-                                      int *dropped_packets) {
+                                            int *dropped_packets) {
   if (hdr->msg_controllen > 0) {
     struct cmsghdr *cmsg;
     for (cmsg = CMSG_FIRSTHDR(hdr);
          cmsg != NULL;
          cmsg = CMSG_NXTHDR(hdr, cmsg)) {
       if (cmsg->cmsg_type == SO_RXQ_OVFL) {
-        *dropped_packets = *(reinterpret_cast<int*>CMSG_DATA(cmsg));
+        memcpy(dropped_packets, CMSG_DATA(cmsg), sizeof(*dropped_packets));
         return true;
       }
     }
   }
   return false;
 }
 
 // static
 int QuicSocketUtils::SetGetAddressInfo(int fd, int address_family) {
   int get_local_ip = 1;
@@ skipping 118 matching lines @@
     hdr.msg_controllen = cmsg->cmsg_len;
   }
 
   int rc = sendmsg(fd, &hdr, 0);
   *error = (rc >= 0) ? 0 : errno;
   return rc;
 }
 
 }  // namespace tools
 }  // namespace net