1 files changed, 8 insertions, 1 deletions
diff --git a/gcc/alias.c b/gcc/alias.c
index 694498ab55a..09ec775c5d0 100644
--- a/gcc/alias.c
+++ b/gcc/alias.c
@@ -691,7 +691,14 @@ get_alias_set (tree t)
      requires structural comparisons to identify compatible types
      use alias set zero.  */
   if (TYPE_STRUCTURAL_EQUALITY_P (t))
-    return 0;
+    {
+      /* Allow the language to specify another alias set for this
+	 type.  */
+      set = lang_hooks.get_alias_set (t);
+      if (set != -1)
+	return set;
+      return 0;
+    }
   t = TYPE_CANONICAL (t);
   /* Canonical types shouldn't form a tree nor should the canonical
      type require structural equality checks.  */