[Bug middle-end/123826] folding of `pow(a, 2.0)` into a*a causes errno not to be set

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123826

ktkachov at gcc dot gnu.org changed:

           What    |Removed                     |Added
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                 CC|                            |ktkachov at gcc dot gnu.org

--- Comment #5 from ktkachov at gcc dot gnu.org ---
If this is a correctness issue does it need to be backported to the branches?
Or is errno handling one of those gray areas?