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

[ktkachov at gcc dot gnu.org]

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

--- Comment #5 from ktkachov at gcc dot gnu.org ---
Also, this happens only for g++, compiling with gcc doesn't eliminate the
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