[issue36218] .sort() segfaults consistently on crafted input

[SilentGhost]

SilentGhost <ghost.adh at runbox.com> added the comment:

Can confirm on 3.7.1 on Linux. The same is happening for sorted. I wonder if the optimisation done in 1e34da49ef2 is responsible

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components: +Interpreter Core
nosy: +SilentGhost, rhettinger
stage:  -> needs patch

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue36218>
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