prevent generator finalization from invalidating sys.exc_info() #7173
diff --git a/Python/ceval.c b/Python/ceval.c
index 5d1fb28..47c53cf 100644
--- a/Python/ceval.c
+++ b/Python/ceval.c
@@ -1159,7 +1159,7 @@
assert(stack_pointer != NULL);
f->f_stacktop = NULL; /* remains NULL unless yield suspends frame */
- if (f->f_code->co_flags & CO_GENERATOR) {
+ if (co->co_flags & CO_GENERATOR && !throwflag) {
if (f->f_exc_type != NULL && f->f_exc_type != Py_None) {
/* We were in an except handler when we left,
restore the exception state which was put aside