[Bug rtl-optimization/126374] Incorrect codegen with -O2 -fno-tree-sra, struct containing union

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=126374

--- Comment #4 from Drea Pinski <pinskia at gcc dot gnu.org> ---
Note I tried my best to see I could get a reproduciable testcase for GCC 10
even and still could not.