interface should be same as class. and DynamicArray should be null too. the hasIndirections!T is handled point and class

Author: dushibaiyu

src/containers/dynamicarray.d

@@ -54,7 +54,7 @@ struct DynamicArray(T, Allocator = Mallocator, bool supportGC = shouldAddGCRange
 			return;
 		foreach (ref item; arr[0 .. l])
 		{
-			static if (is(T == class))
+			static if (is(T == class) || is(T == interface))
 				destroy(item);
 			else
 				typeid(T).destroy(&item);
@@ -164,7 +164,7 @@ struct DynamicArray(T, Allocator = Mallocator, bool supportGC = shouldAddGCRange
 	{
 		if (i < this.l)
 		{
-			static if (is(T == class))
+			static if (is(T == class) || is(T == interface))
 				destroy(arr[i]);
 			else
 				typeid(T).destroy(&arr[i]);

src/containers/internal/node.d

@@ -53,13 +53,13 @@ version (X86_64)
 template shouldNullSlot(T)
 {
 	import std.traits;
-	enum shouldNullSlot = isPointer!T || is (T == class);
+	enum shouldNullSlot = isPointer!T || is (T == class) || is (T == interface) || isDynamicArray!T;
 }
 
 template shouldAddGCRange(T)
 {
 	import std.traits;
-	enum shouldAddGCRange = isPointer!T || hasIndirections!T || is (T == class);
+	enum shouldAddGCRange = hasIndirections!T;
 }
 
 static assert (shouldAddGCRange!string);

src/containers/ttree.d

@@ -532,7 +532,7 @@ private:
 		bool insert(T value, ref Node* root, AllocatorType allocator)
 		in
 		{
-			static if (isPointer!T || is (T == class))
+			static if (isPointer!T || is (T == class) || is (T == interface)) 
 				assert (value !is null);
 		}
 		body
@@ -718,7 +718,7 @@ private:
 		}
 		out (result)
 		{
-			static if (isPointer!T || is (T == class))
+			static if (isPointer!T || is (T == class) || is(T == interface))
 				assert (result !is null);
 		}
 		body

src/containers/unrolledlist.d

@@ -72,7 +72,7 @@ struct UnrolledList(T, Allocator = Mallocator,
 		{
 			prev = cur;
 			cur = cur.next;
-			static if (!is(T == class))
+			static if (!(is(T == class) || is(T == interface)))
 				foreach (ref item; cur.items)
 					typeid(T).destroy(&item);
 			deallocateNode(prev);