-ffast-math

[Eli the Bearded]

https://twitter.com/moyix/status/1567167774039973888

    Brendan Dolan-Gavitt @moyix

    New blog post is live! In which I download 4 TB of Python packages
    containing native x86-64 libraries and see how many of them use
    -ffast-math, potentially altering floating point behavior in any
    program unlucky enough to load them!

    https://moyix.blogspot.com/2022/09/someones-been-messing-with-my-subnormals.html

    8:08 AM - Sep 6, 2022

It's quite an adventure, a longish read but fun.

Elijah
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TL;DR: two dependencies using same misguided makefile cause most issues