Path: csiph.com!eternal-september.org!feeder.eternal-september.org!reader01.eternal-september.org!.POSTED!not-for-mail From: Tim Rentsch Newsgroups: comp.lang.c Subject: Re: Are bitfields useful? Date: Sun, 23 Aug 2020 07:54:13 -0700 Organization: A noiseless patient Spider Lines: 11 Message-ID: <86tuwtbega.fsf@linuxsc.com> References: <6bcaccac-13ef-45cd-bbc7-0dbd5d452f68o@googlegroups.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Injection-Info: reader02.eternal-september.org; posting-host="a0e402bf6f289e2e0586e1d075c61f0f"; logging-data="14469"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX18hC2karPDD4bqPHlPsO/O7+nn4QlGCkXg=" User-Agent: Gnus/5.11 (Gnus v5.11) Emacs/22.4 (gnu/linux) Cancel-Lock: sha1:K26PqC2RQjJDYorC//TqwvST7R8= sha1:1q4YloPQV+bSpJYPU+YYXlAACCs= Xref: csiph.com comp.lang.c:153964 Andrey Tarasevich writes: > It is true that language specification does not even guarantee that > bit-fields are packed somehow, [...] The ISO C standard doesn't guarantee anything. It does, however, require that conforming implementations pack adjacent bit-fields in a certain way, subject to a small number of implementation-defined choices.