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loewisloewis
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Unlink the structseq type from the global list of
objects before initializing it. It might be linked already if there was a Py_Initialize/Py_Finalize cycle earlier; not unlinking it would break the global list.
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‎Objects/structseq.c‎

Lines changed: 8 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -349,6 +349,14 @@ PyStructSequence_InitType(PyTypeObject *type, PyStructSequence_Desc *desc)
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PyMemberDef* members;
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int n_members, n_unnamed_members, i, k;
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#ifdef Py_TRACE_REFS
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/* if the type object was chained, unchain it first
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before overwriting its storage */
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if (type->_ob_next) {
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_Py_ForgetReference((PyObject*)type);
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}
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#endif
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n_unnamed_members = 0;
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for (i = 0; desc->fields[i].name != NULL; ++i)
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if (desc->fields[i].name == PyStructSequence_UnnamedField)

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