trans.c (mark_visited_r): Set TYPE_SIZES_GIMPLIFIED on the main variant of a type, if any.

	* gcc-interface/trans.c (mark_visited_r): Set TYPE_SIZES_GIMPLIFIED on
	the main variant of a type, if any.

From-SVN: r272815

gcc/ada/ChangeLog

 2019-06-29  Eric Botcazou  <ebotcazou@adacore.com>
 
+	* gcc-interface/trans.c (mark_visited_r): Set TYPE_SIZES_GIMPLIFIED on
+	the main variant of a type, if any.
+
+2019-06-29  Eric Botcazou  <ebotcazou@adacore.com>
+
 	* gcc-interface/decl.c (set_nonaliased_component_on_array_type): Add
 	missing guard for the presence of TYPE_CANONICAL.
 	(set_reverse_storage_order_on_array_type): Likewise.

gcc/ada/gcc-interface/trans.c

@@ -9042,8 +9042,9 @@ mark_visited_r (tree *tp, int *walk_subtrees, void *data ATTRIBUTE_UNUSED)
   else if (!TYPE_IS_DUMMY_P (t))
     TREE_VISITED (t) = 1;
 
+  /* The test in gimplify_type_sizes is on the main variant.  */
   if (TYPE_P (t))
-    TYPE_SIZES_GIMPLIFIED (t) = 1;
+    TYPE_SIZES_GIMPLIFIED (TYPE_MAIN_VARIANT (t)) = 1;
 
   return NULL_TREE;
 }