[Bug target/85915] -mfunction-return=thunk causes multiple definition of `__x86_return_thunk'

[Arfrever.FTA at GMail dot Com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85915

--- Comment #5 from Arfrever Frehtes Taifersar Arahesis <Arfrever.FTA at GMail 
dot Com> ---
Do you know numbers of relevant revisions which I could locally backport to GCC
7.3.0?