Put back the standard-layout checks lost in 5bbb7e8abbe0

util/misc/uuid.cc

 // Copyright 2014 The Crashpad Authors. All rights reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
 //     http://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
 #include "util/misc/uuid.h"
 
 #include <string.h>
 
 #include "base/basictypes.h"
 #include "base/strings/stringprintf.h"
 #include "base/sys_byteorder.h"
+#include "util/stdlib/cxx.h"
+
+#if CXX_LIBRARY_VERSION >= 2011
+#include <type_traits>
+#endif
 
 namespace crashpad {
 
+COMPILE_ASSERT(sizeof(UUID) == 16, UUID_must_be_16_bytes);
+
+#if CXX_LIBRARY_VERSION >= 2011
+COMPILE_ASSERT(std::is_standard_layout<UUID>::value,
+               UUID_must_be_standard_layout);
+#endif
+
 UUID::UUID() : data_1(0), data_2(0), data_3(0), data_4(), data_5() {
 }
 
 UUID::UUID(const uint8_t* bytes) {
   InitializeFromBytes(bytes);
 }
 
 void UUID::InitializeFromBytes(const uint8_t* bytes) {
   memcpy(this, bytes, sizeof(*this));
   data_1 = base::NetToHost32(data_1);
@@ skipping 10 matching lines @@
                             data_4[1],
                             data_5[0],
                             data_5[1],
                             data_5[2],
                             data_5[3],
                             data_5[4],
                             data_5[5]);
 }
 
 }  // namespace crashpad