https://github.com/python/cpython/commit/ccaf865364692087dc74252dd411f6356a1d43f0 commit: ccaf865364692087dc74252dd411f6356a1d43f0 branch: 3.14 author: Miss Islington (bot) <[email protected]> committer: gpshead <[email protected]> date: 2025-05-20T09:57:39Z summary:
[3.14] gh-131505: Move len boundary assertions before using len. (GH-131536) (GH-134239) gh-131505: Move len boundary assertions before using len. (GH-131536) Move len boundary assertions before using len. (cherry picked from commit c45e661226558e997e265cf53ce1419213cc10b7) Co-authored-by: naya451 <[email protected]> files: M Modules/_io/bytesio.c diff --git a/Modules/_io/bytesio.c b/Modules/_io/bytesio.c index e45a2d1a16dcba..8bc7aeacf294ba 100644 --- a/Modules/_io/bytesio.c +++ b/Modules/_io/bytesio.c @@ -583,9 +583,9 @@ _io_BytesIO_readinto_impl(bytesio *self, Py_buffer *buffer) len = 0; } - memcpy(buffer->buf, PyBytes_AS_STRING(self->buf) + self->pos, len); assert(self->pos + len < PY_SSIZE_T_MAX); assert(len >= 0); + memcpy(buffer->buf, PyBytes_AS_STRING(self->buf) + self->pos, len); self->pos += len; return PyLong_FromSsize_t(len); _______________________________________________ Python-checkins mailing list -- [email protected] To unsubscribe send an email to [email protected] https://mail.python.org/mailman3/lists/python-checkins.python.org/ Member address: [email protected]
