[issue25395] SIGSEGV using json.tool: highly nested OrderedDict

[Martin Panter]

Martin Panter added the comment:

The following simplified code produces the crash:

from collections import OrderedDict
obj = []
for _ in range(33):
    obj = OrderedDict(((None, obj),))
for _ in range(17):
    obj = [obj]
print("Still alive, crash happens at interpreter finalization")

This crashes at the same line as in Serhiy’s backtrace. In _PyTrash_thread_destroy_chain(), Py_TYPE(op) is a bad pointer (0xdbdbdbdbdbdbdbdb); I have enabled --with-pydebug.

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components: +Interpreter Core -Library (Lib)
nosy: +martin.panter
title: SIGSEGV using json.tool -> SIGSEGV using json.tool: highly nested OrderedDict

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue25395>
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