[Bug tree-optimization/63381] [5 Regression] Wrong constant folding

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63381

--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Actually, Comment 1 applies here as well, so these two could be dups.