[issue11145] '%o' % user-defined instance

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

Here is a patch which fixes this issue. Now ValueError with relevant message is raised instead of SystemError or crash.

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nosy: +serhiy.storchaka
stage:  -> patch review
type: behavior -> crash

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue11145>
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