[issue36051] Drop the GIL during large bytes.join operations?

[Inada Naoki]

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

> 2. If the thread tries to change the size of the bytearrays during the join (ba1 += b'123'), it'll die with a BufferError that wasn't previously possible

Makes sense.  We shouldn't drop GIL while having buffer of arbitrary objects.

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<https://bugs.python.org/issue36051>
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