[issue36839] Support the buffer protocol in code objects

[Inada Naoki]

Inada Naoki <songofacandy at gmail.com> added the comment:

I don't like this.
It removes guarantee that code object is constant / immutable.

> Because the code objects are on random pages and are ref counted the ref counts can cause all of the code to not be shared across processes.

These ref counts are not incremented or decremented typically, until shutting down.
If you want to avoid CoW when shutting down, you can use os._exit.

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nosy: +inada.naoki

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<https://bugs.python.org/issue36839>
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