Remove UBU in AlignedStorage

This just needs using std::array

Bug: 408010433
Change-Id: I6f0604d43c6577f2d068915260ee0f91ac89b2fb
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/299296
Reviewed-by: James Price <jrprice@google.com>
Commit-Queue: Ryan Harrison <rharrison@chromium.org>
Reviewed-by: dan sinclair <dsinclair@chromium.org>
Auto-Submit: Ryan Harrison <rharrison@chromium.org>

src/tint/utils/memory/aligned_storage.h

diff --git a/src/tint/utils/memory/aligned_storage.h b/src/tint/utils/memory/aligned_storage.h
index 7c533bb..a147901 100644
--- a/src/tint/utils/memory/aligned_storage.h
+++ b/src/tint/utils/memory/aligned_storage.h
@@ -28,13 +28,12 @@
 #ifndef SRC_TINT_UTILS_MEMORY_ALIGNED_STORAGE_H_
 #define SRC_TINT_UTILS_MEMORY_ALIGNED_STORAGE_H_
 
+#include <array>
 #include <cstddef>
 
 #include "src/tint/utils/macros/compiler.h"
 #include "src/tint/utils/memory/bitcast.h"
 
-TINT_BEGIN_DISABLE_WARNING(UNSAFE_BUFFER_USAGE);
-
 namespace tint {
 
 /// A structure that has the same size and alignment as Entry.
@@ -42,17 +41,15 @@
 template <typename T>
 struct alignas(alignof(T)) AlignedStorage {
     /// Byte array of length sizeof(T)
-    std::byte data[sizeof(T)];
+    std::array<std::byte, sizeof(T)> data;
 
     /// @returns a pointer to aligned storage, reinterpreted as T&
-    T& Get() { return *Bitcast<T*>(&data[0]); }
+    T& Get() { return *Bitcast<T*>(data.data()); }
 
     /// @returns a pointer to aligned storage, reinterpreted as T&
-    const T& Get() const { return *Bitcast<const T*>(&data[0]); }
+    const T& Get() const { return *Bitcast<const T*>(data.data()); }
 };
 
 }  // namespace tint
 
-TINT_END_DISABLE_WARNING(UNSAFE_BUFFER_USAGE);
-
 #endif  // SRC_TINT_UTILS_MEMORY_ALIGNED_STORAGE_H_