[issue21912] Deferred logging may use outdated references

[Jonas Diemer]

Jonas Diemer added the comment:

Find attached a demo script that causes the erratic behavior in regular Python (2.7.5 on Windows).

The log file contains two lines, both show the new name of the object, although the first debug() was called befor the name change.

I think this problem could be avoided if the message was formatted earlier (i.e. synchronous to the debug() call).

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Added file: http://bugs.python.org/file35839/testlogging.py

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