https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62180
--- Comment #3 from Jan Čapek <jan.capek at braiins dot cz> --- (In reply to Andrew Pinski from comment #1) > C11 says something different here. I can see the following the -fstrict-volatile-bitfields documentation: "This option should be used if accesses to volatile bit-fields (or other structure fields, although the compiler usually honors those types anyway) should use a single access of the width of the field's type, aligned to a natural alignment if possible." And this is actually the case with gcc 4.7.2, it ignore the -fstrict.... option, and also doesn't need volatile on the individual bit-fields and it still generates correct code due to specifying the bitfield types.
