From 75a1f5234e4b544b4d16eddb995d39685da21361 Mon Sep 17 00:00:00 2001
From: Ivan Murashov <ivan.murashov@lge.com>
Date: Fri, 20 Nov 2020 09:38:56 +0000
Subject: [PATCH] Remove storage class specifier for the explicit template specialization

According to the http://www.eel.is/c++draft/temp.expl.spec:
An explicit specialization shall not use a storage-class-specifier
other than thread_local.
Clang doesn't claims about it, but GCC does.
An error example for GCC 8.4.0:
gen/third_party/dawn/src/dawn_wire/client/ApiObjects_autogen.h:25:5:
error: explicit template specialization cannot have a storage class

Bug: dawn:384
Change-Id: Iaf86722a943d19c9796a7f112885666ac88f20ca
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/33480
Commit-Queue: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
---

diff --git a/third_party/dawn/generator/templates/dawn_wire/client/ApiObjects.h b/third_party/dawn/generator/templates/dawn_wire/client/ApiObjects.h
index 0d8421b..bbf9817 100644
--- a/third_party/dawn/generator/templates/dawn_wire/client/ApiObjects.h
+++ b/third_party/dawn/generator/templates/dawn_wire/client/ApiObjects.h
@@ -21,7 +21,9 @@
 namespace dawn_wire { namespace client {
 
     template <typename T>
-    static constexpr ObjectType ObjectTypeToTypeEnum = static_cast<ObjectType>(-1);
+    struct ObjectTypeToTypeEnum {
+        static constexpr ObjectType value = static_cast<ObjectType>(-1);
+    };
 
     {% for type in by_category["object"] %}
         {% set Type = type.name.CamelCase() %}
@@ -41,7 +43,9 @@
         }
 
         template <>
-        static constexpr ObjectType ObjectTypeToTypeEnum<{{type.name.CamelCase()}}> = ObjectType::{{type.name.CamelCase()}};
+        struct ObjectTypeToTypeEnum<{{Type}}> {
+            static constexpr ObjectType value = ObjectType::{{Type}};
+        };
 
     {% endfor %}
 }}  // namespace dawn_wire::client
diff --git a/third_party/dawn/src/dawn_wire/client/Device.h b/third_party/dawn/src/dawn_wire/client/Device.h
index eef03a5..a0036a4 100644
--- a/third_party/dawn/src/dawn_wire/client/Device.h
+++ b/third_party/dawn/src/dawn_wire/client/Device.h
@@ -65,7 +65,7 @@
 
         template <typename T>
         void TrackObject(T* object) {
-            mObjects[ObjectTypeToTypeEnum<T>].Append(object);
+            mObjects[ObjectTypeToTypeEnum<T>::value].Append(object);
         }
 
         void CancelCallbacksForDisconnect() override;