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Path: ...!news.nobody.at!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail From: Tim Rentsch <tr.17687@z991.linuxsc.com> Newsgroups: comp.lang.c Subject: Re: No warning at implicit removal of const. Was: relearning C: why does an in-place change to a char* segfault? Date: Mon, 12 Aug 2024 14:38:36 -0700 Organization: A noiseless patient Spider Lines: 22 Message-ID: <86plqd2zhf.fsf@linuxsc.com> References: <IoGcndcJ1Zm83zb7nZ2dnZfqnPWdnZ2d@brightview.co.uk> <20240801174026.00002cda@yahoo.com> <v8gi7i$29iu1$1@dont-email.me> <slrnvaorkl.34j6.candycanearter07@candydeb.host.invalid> <87zfpvfdk4.fsf@nosuchdomain.example.com> <v8ii17$2q5p1$1@dont-email.me> <87v80ig4vt.fsf@nosuchdomain.example.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Injection-Date: Mon, 12 Aug 2024 23:38:36 +0200 (CEST) Injection-Info: dont-email.me; posting-host="f42e4005105099d89c60a754521770ce"; logging-data="3643568"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1+rZVwWdHP10FgxzA6XFz17Fsdy4Af9ht4=" User-Agent: Gnus/5.11 (Gnus v5.11) Emacs/22.4 (gnu/linux) Cancel-Lock: sha1:oS838adTom89XqqNbg2LqNgMKGc= sha1:9M3hkfHr0MHYV0s9ikFXfhZT27k= Bytes: 1999 Keith Thompson <Keith.S.Thompson+u@gmail.com> writes: > Richard Harnden <richard.nospam@gmail.invalid> writes: > [...] > >> Is there any reason not to always write ... >> >> static const char *s = "hello, world"; >> >> ... ? >> >> You get all the warnings for free that way. > > The "static", if this is at block scope, specifies that the > pointer object, not the array object, has static storage duration. > If it's at file scope it specifies that the name "s" is not > visible to other translation units. Either way, use it if that's > what you want, don't use it if it isn't. > > There's no good reason not to use "const". [...] Other people have different opinions on that question.