https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115767
Xi Ruoyao <xry111 at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |xry111 at gcc dot gnu.org --- Comment #4 from Xi Ruoyao <xry111 at gcc dot gnu.org> --- Note that -fno-strict-aliasing helps and in the boost code path for replace_right there's: return *reinterpret_cast< const View* >(boost::addressof(m)); But maybe this line is innocent and -fno-strict-aliasing just happens to hide the issue somehow OTOH.