https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80597
David Binderman <dcb314 at hotmail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |dcb314 at hotmail dot com --- Comment #1 from David Binderman <dcb314 at hotmail dot com> --- The attached file demonstrates the problem and only needs flags -v -w -O2.