Put back the standard-layout checks lost in 5bbb7e8abbe0

util/misc/uuid_test.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,
@@ skipping 81 matching lines @@
   EXPECT_EQ(0x9988u, uuid.data_3);
   EXPECT_EQ(0x77u, uuid.data_4[0]);
   EXPECT_EQ(0x66u, uuid.data_4[1]);
   EXPECT_EQ(0x55u, uuid.data_5[0]);
   EXPECT_EQ(0x44u, uuid.data_5[1]);
   EXPECT_EQ(0x33u, uuid.data_5[2]);
   EXPECT_EQ(0x22u, uuid.data_5[3]);
   EXPECT_EQ(0x11u, uuid.data_5[4]);
   EXPECT_EQ(0x00u, uuid.data_5[5]);
   EXPECT_EQ("ffeeddcc-bbaa-9988-7766-554433221100", uuid.ToString());
+
+  // Test that UUID is standard layout.
+  memset(&uuid, 0x45, 16);
+  EXPECT_EQ(0x45454545u, uuid.data_1);
+  EXPECT_EQ(0x4545u, uuid.data_2);
+  EXPECT_EQ(0x4545u, uuid.data_3);
+  EXPECT_EQ(0x45u, uuid.data_4[0]);
+  EXPECT_EQ(0x45u, uuid.data_4[1]);
+  EXPECT_EQ(0x45u, uuid.data_5[0]);
+  EXPECT_EQ(0x45u, uuid.data_5[1]);
+  EXPECT_EQ(0x45u, uuid.data_5[2]);
+  EXPECT_EQ(0x45u, uuid.data_5[3]);
+  EXPECT_EQ(0x45u, uuid.data_5[4]);
+  EXPECT_EQ(0x45u, uuid.data_5[5]);
+  EXPECT_EQ("45454545-4545-4545-4545-454545454545", uuid.ToString());
 }
 
 }  // namespace