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[3.14] gh-134119: Fix crash from calling next() on exhausted template iterator (GH-134120) (#134153)

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gh-134119: Fix crash from calling next() on exhausted template iterator (GH-134120)
(cherry picked from commit fc7f4c3666)

Co-authored-by: Jelle Zijlstra <jelle.zijlstra@gmail.com>
Co-authored-by: Bénédikt Tran <10796600+picnixz@users.noreply.github.com>
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Miss Islington (bot) 2025-05-17 21:48:54 +02:00 • committed by GitHub
parent cca18fcbe8
commit 1ba5e65b76
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Objects/templateobject.c
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@ -23,6 +23,9 @@ templateiter_next(PyObject *op)
if (self->from_strings) {
item = PyIter_Next(self->stringsiter);
self->from_strings = 0;
if (item == NULL) {
return NULL;
}
if (PyUnicode_GET_LENGTH(item) == 0) {
Py_SETREF(item, PyIter_Next(self->interpolationsiter));
self->from_strings = 1;