This is a commonly-used package for spatial indexing.
Strangely enough, the tests are broken due to memory unsafety that I was unable
to reproduce under Debian. For instance, when run with Python 3.6 valgrind
reports,
==10453== Invalid read of size 4
==10453== at 0x4EF1DFA: _PyObject_Free (in /nix/store/azw9ys2m2fpfzf730xjcxja890gpyp58-python3-3.6.4/lib/libpython3.6m.so.1.0)
==10453== by 0x4FE7D96: _PyFaulthandler_Fini (in /nix/store/azw9ys2m2fpfzf730xjcxja890gpyp58-python3-3.6.4/lib/libpython3.6m.so.1.0)
==10453== by 0x4F8438D: Py_FinalizeEx (in /nix/store/azw9ys2m2fpfzf730xjcxja890gpyp58-python3-3.6.4/lib/libpython3.6m.so.1.0)
==10453== by 0x4F9F398: Py_Main (in /nix/store/azw9ys2m2fpfzf730xjcxja890gpyp58-python3-3.6.4/lib/libpython3.6m.so.1.0)
==10453== by 0x400BDF: main (in /nix/store/azw9ys2m2fpfzf730xjcxja890gpyp58-python3-3.6.4/bin/python3.6)
==10453== Address 0x67b1020 is 352 bytes inside a block of size 640 free'd
==10453== at 0x4C2DD6B: free (in /nix/store/6z028lfnxyhh8dlngpm6zrkwqxmbglj4-valgrind-3.13.0/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==10453== by 0x4EDDC4A: free_keys_object (in /nix/store/azw9ys2m2fpfzf730xjcxja890gpyp58-python3-3.6.4/lib/libpython3.6m.so.1.0)
==10453== by 0x4EDEE63: dict_dealloc (in /nix/store/azw9ys2m2fpfzf730xjcxja890gpyp58-python3-3.6.4/lib/libpython3.6m.so.1.0)
==10453== by 0x4EECF59: module_clear (in /nix/store/azw9ys2m2fpfzf730xjcxja890gpyp58-python3-3.6.4/lib/libpython3.6m.so.1.0)
==10453== by 0x4FA062B: collect (in /nix/store/azw9ys2m2fpfzf730xjcxja890gpyp58-python3-3.6.4/lib/libpython3.6m.so.1.0)
==10453== by 0x4FA13A0: _PyGC_CollectNoFail (in /nix/store/azw9ys2m2fpfzf730xjcxja890gpyp58-python3-3.6.4/lib/libpython3.6m.so.1.0)
==10453== by 0x4F79CED: PyImport_Cleanup (in /nix/store/azw9ys2m2fpfzf730xjcxja890gpyp58-python3-3.6.4/lib/libpython3.6m.so.1.0)
==10453== by 0x4F8436F: Py_FinalizeEx (in /nix/store/azw9ys2m2fpfzf730xjcxja890gpyp58-python3-3.6.4/lib/libpython3.6m.so.1.0)
==10453== by 0x4F9F398: Py_Main (in /nix/store/azw9ys2m2fpfzf730xjcxja890gpyp58-python3-3.6.4/lib/libpython3.6m.so.1.0)
==10453== by 0x400BDF: main (in /nix/store/azw9ys2m2fpfzf730xjcxja890gpyp58-python3-3.6.4/bin/python3.6)
==10453==
==10453== Conditional jump or move depends on uninitialised value(s)
==10453== at 0x4EF1E03: _PyObject_Free (in /nix/store/azw9ys2m2fpfzf730xjcxja890gpyp58-python3-3.6.4/lib/libpython3.6m.so.1.0)
==10453== by 0x4EFEF2D: type_dealloc (in /nix/store/azw9ys2m2fpfzf730xjcxja890gpyp58-python3-3.6.4/lib/libpython3.6m.so.1.0)
==10453== by 0x4EFD009: subtype_dealloc (in /nix/store/azw9ys2m2fpfzf730xjcxja890gpyp58-python3-3.6.4/lib/libpython3.6m.so.1.0)
==10453== by 0x4FA063E: collect (in /nix/store/azw9ys2m2fpfzf730xjcxja890gpyp58-python3-3.6.4/lib/libpython3.6m.so.1.0)
==10453== by 0x4FA13A0: _PyGC_CollectNoFail (in /nix/store/azw9ys2m2fpfzf730xjcxja890gpyp58-python3-3.6.4/lib/libpython3.6m.so.1.0)
==10453== by 0x4F79DF8: PyImport_Cleanup (in /nix/store/azw9ys2m2fpfzf730xjcxja890gpyp58-python3-3.6.4/lib/libpython3.6m.so.1.0)
==10453== by 0x4F8436F: Py_FinalizeEx (in /nix/store/azw9ys2m2fpfzf730xjcxja890gpyp58-python3-3.6.4/lib/libpython3.6m.so.1.0)
==10453== by 0x4F9F398: Py_Main (in /nix/store/azw9ys2m2fpfzf730xjcxja890gpyp58-python3-3.6.4/lib/libpython3.6m.so.1.0)
==10453== by 0x400BDF: main (in /nix/store/azw9ys2m2fpfzf730xjcxja890gpyp58-python3-3.6.4/bin/python3.6)
==10453==
...
