Some more changes related to the new except syntax and semantics,
by Collin Winter.
diff --git a/Python/ast.c b/Python/ast.c
index 5ccd6f5..41fb50e 100644
--- a/Python/ast.c
+++ b/Python/ast.c
@@ -2899,11 +2899,9 @@
     else if (NCH(exc) == 4) {
         asdl_seq *suite_seq;
         expr_ty expression;
-        expr_ty e = ast_for_expr(c, CHILD(exc, 3));
+        identifier e = NEW_IDENTIFIER(CHILD(exc, 3));
         if (!e)
             return NULL;
-        if (!set_context(e, Store, CHILD(exc, 3)))
-            return NULL;
         expression = ast_for_expr(c, CHILD(exc, 1));
         if (!expression)
             return NULL;