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From: "wek at host dot sk" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/45881] New: bit offset of bitfields
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45881

           Summary: bit offset of bitfields
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: enhancement
          Priority: P3
         Component: c
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: wek@host.sk


A (builtin) function, returning bit offset for bitfields within structs, could
be useful to pass bit "addresses" as function parameters.

In analogy to offsetof()/sizeof(), a similar function returning number of bits
of a bitfield could be created, too, although it would be less useful than the
offset.