From b266481ed8dba9164b03e72bab9c19712b938657 Mon Sep 17 00:00:00 2001
From: Benjamin Peterson <benjamin@python.org>
Date: Thu, 11 Jun 2009 17:49:38 +0000
Subject: [PATCH] revert r73361

---
 Python/ast.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Python/ast.c b/Python/ast.c
index 8e1c53055ad..2cc41b274f1 100644
--- a/Python/ast.c
+++ b/Python/ast.c
@@ -2120,6 +2120,10 @@ ast_for_expr_stmt(struct compiling *c, const node *n)
         for (i = 0; i < NCH(n) - 2; i += 2) {
             expr_ty e;
             node *ch = CHILD(n, i);
+            if (TYPE(ch) == yield_expr) {
+                ast_error(ch, "assignment to yield expression not possible");
+                return NULL;
+            }
             e = ast_for_testlist(c, ch);
 
             /* set context to assign */