[issue22003] BytesIO copy-on-write

[Stefan Krah]

Stefan Krah added the comment:

The original wording in the PEP is this:

readonly
--------
    an integer variable to hold whether or not the memory is readonly. 1
    means the memory is readonly, zero means the memory is writable.


To me this means that a hypothetical compiler that could figure
out at compile time that the readonly flag is set would be allowed
to put the buffer contents into the read-only data section.

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<http://bugs.python.org/issue22003>
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