Date: Thu, 15 Mar 2018 15:43:48 -0400 From: Rich Felker <dalias@...c.org> To: musl@...ts.openwall.com Subject: Re: Re: #define __MUSL__ in features.h On Thu, Mar 15, 2018 at 04:37:39PM -0300, dgutson . wrote: > > > >> So whenever we find a bug on musl we should just stop all our > > > >> development until you've fixed the bug? > > > > > > > > No. As noted above, if you need to support systems that might have bug > > > > X, you write a test (configure-time or run-time as appropriate) to > > > > detect bug X and handle it. > > > > > > Precisely, and __MUSL__ would be really useful for this. > > > > Absolutely not. __MUSL__ would not tell you anything about whether bug > > X is present. It would facilitate permanently assuming "musl has bug > > X" because you observed bug X on musl at one point in the past. > > > > Then turn __MUSL__ a number holding the version, as in cplusplus, etc, so > people can do > > #if __MUSL__ < someversion > #endif > > and it will be clear what happens and will solve the chronology issue. This is a never-ending FAQ tarpit. Version numbers DO NOT WORK to indicate presence or absence of bugs, because distros will backport fixes. Apparently you never dealt with the hell of Redhat shipping "2.6.x" kernels that had all the bugfixes from late 3.x, and applications trying to infer stuff from the version number. DON'T DO THAT. If you need to know if a bug or a feature is present, TEST FOR IT. Rich
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