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[3.14] gh-131505: Move len boundary assertions before using len. (GH-131536) (GH-134239)

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gh-131505: Move len boundary assertions before using len. (GH-131536)

Move len boundary assertions before using len.
(cherry picked from commit c45e661226)

Co-authored-by: naya451 <41294408+naya451@users.noreply.github.com>
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Miss Islington (bot) 2025-05-20 11:57:39 +02:00 • committed by GitHub
parent 9be3413b60
commit ccaf865364
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1 changed files with 1 additions and 1 deletions
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Modules/_io/bytesio.c
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@ -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);