[Bug tree-optimization/117423] [12/13/14/15 Regression] union not written to with particular layout since r10-6321-g636e80eea24b78

[tpg+gcc at mutabah dot net via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117423

--- Comment #5 from John Hodge <tpg+gcc at mutabah dot net> ---
(In reply to Andrew Pinski from comment #3)
> Obvbious workaround `-fno-tree-sra` .

Thanks for pointing out the flag to avoid this issue, that's allowed me to
progress with my other testing. And thanks very much for the prompt replies :)