[Bug tree-optimization/70848] [6/7 Regression] g++ arm-none-eabi ignores volatile qualifier

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70848

--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Somehow the C++ FE interferes with gimplification of the correct GENERIC prior
to gimplification.