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-rw-r--r--Modules/_io/textio.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/Modules/_io/textio.c b/Modules/_io/textio.c
index 209aa13..6e706cd 100644
--- a/Modules/_io/textio.c
+++ b/Modules/_io/textio.c
@@ -694,6 +694,9 @@ typedef struct
PyObject *dict;
} textio;
+static void
+textiowrapper_set_decoded_chars(textio *self, PyObject *chars);
+
/* A couple of specialized cases in order to bypass the slow incremental
encoding methods for the most popular encodings. */
@@ -1606,6 +1609,7 @@ _io_TextIOWrapper_write_impl(textio *self, PyObject *text)
Py_DECREF(ret);
}
+ textiowrapper_set_decoded_chars(self, NULL);
Py_CLEAR(self->snapshot);
if (self->decoder) {
@@ -1835,6 +1839,7 @@ _io_TextIOWrapper_read_impl(textio *self, Py_ssize_t n)
if (result == NULL)
goto fail;
+ textiowrapper_set_decoded_chars(self, NULL);
Py_CLEAR(self->snapshot);
return result;
}