1 files changed, 7 insertions, 0 deletions
diff --git a/gcc/expr.c b/gcc/expr.c
index 19b404f..2a4629a 100644
--- a/gcc/expr.c
+++ b/gcc/expr.c
@@ -8947,6 +8947,13 @@ expand_expr_real_1 (tree exp, rtx target, enum machine_mode tmode,
       /* Lowered by gimplify.c.  */
       gcc_unreachable ();
 
+    case CHANGE_DYNAMIC_TYPE_EXPR:
+      /* This is ignored at the RTL level.  The tree level set
+	 DECL_POINTER_ALIAS_SET of any variable to be 0, which is
+	 overkill for the RTL layer but is all that we can
+	 represent.  */
+      return const0_rtx;
+
     case EXC_PTR_EXPR:
       return get_exception_pointer (cfun);