[Bug tree-optimization/107200] False positive -Wdangling-pointer?

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107200

--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
See https://libeigen.gitlab.io/docs/TopicPitfalls.html
section "C++11 and the auto keyword" explictly.