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-rw-r--r--Modules/collectionsmodule.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/Modules/collectionsmodule.c b/Modules/collectionsmodule.c
index cf474f7..fc30c99 100644
--- a/Modules/collectionsmodule.c
+++ b/Modules/collectionsmodule.c
@@ -770,6 +770,7 @@ dequeiter_next(dequeiterobject *it)
if (it->len != it->deque->len) {
it->len = -1; /* Make this state sticky */
+ it->counter = 0;
PyErr_SetString(PyExc_RuntimeError,
"deque changed size during iteration");
return NULL;
@@ -860,6 +861,7 @@ dequereviter_next(dequeiterobject *it)
if (it->len != it->deque->len) {
it->len = -1; /* Make this state sticky */
+ it->counter = 0;
PyErr_SetString(PyExc_RuntimeError,
"deque changed size during iteration");
return NULL;