From a8a38b8e4f6a4273cfda8480458447f91310edf6 Mon Sep 17 00:00:00 2001
From: Benjamin Peterson <benjamin@python.org>
Date: Sat, 19 Oct 2013 16:14:39 -0400
Subject: [PATCH] strengthen condition and add assertion

---
 Python/compile.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Python/compile.c b/Python/compile.c
index 85ea1d098dc..9176e3131db 100644
--- a/Python/compile.c
+++ b/Python/compile.c
@@ -670,7 +670,8 @@ compiler_scope_qualname(struct compiler *c, identifier scope_name)
         return NULL;
 
     stack_size = PyList_GET_SIZE(c->c_stack);
-    global_scope = stack_size <= 1;
+    assert(stack_size >= 1);
+    global_scope = stack_size == 1;
     if (scope_name != NULL && !global_scope) {
         int scope;
         PyObject *mangled;