commit c9314d9e08309782010b56a41bb2d28c6a556302
author Benjamin Peterson <benjamin@python.org> Wed Apr 10 17:00:56 2013 -0400
committer Benjamin Peterson <benjamin@python.org> Wed Apr 10 17:00:56 2013 -0400
tree 6e1b43b68da2da88e5a1bb714848a7fceac5d65f
parent cd514cf175ef820fe62f7e201f596f930d4b1d02

don't run frame if it has no stack (closes #17669)

Objects/genobject.c

diff --git a/Objects/genobject.c b/Objects/genobject.c
index 597aed3..016bfa2 100644
--- a/Objects/genobject.c
+++ b/Objects/genobject.c
@@ -178,7 +178,7 @@
     PyObject *yf = NULL;
     PyFrameObject *f = gen->gi_frame;
 
-    if (f) {
+    if (f && f->f_stacktop) {
         PyObject *bytecode = f->f_code->co_code;
         unsigned char *code = (unsigned char *)PyBytes_AS_STRING(bytecode);