https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61414
Xidorn Quan <quanxunzhen at gmail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |quanxunzhen at gmail dot com --- Comment #5 from Xidorn Quan <quanxunzhen at gmail dot com> --- It seems G++ always throw that warning for enum class as bitfield, even when the enum class is actually empty: > enum class K {}; > struct S { > K v : 5; > }; G++ would give: > test.cpp:3:9: warning: 'S::v' is too small to hold all values of 'enum class > K' > K v : 5;