Date: Tue, 31 Jan 2017 12:50:25 -0600 From: William Pitcock <nenolod@...eferenced.org> To: Harald Arnesen <harald@...gtun.org> Cc: alpine-dev <alpine-devel@...ts.alpinelinux.org>, musl@...ts.openwall.com Subject: Re: [alpine-devel] Non-standard C library Hello, On Tue, Jan 31, 2017 at 12:22 PM, Harald Arnesen <harald@...gtun.org> wrote: > musl defines "IPPORT_RESERVED" in "netdb.h", while both GNU libc and BSD > libc define it in "netinet/in.h". And I can't find an e-mail address for > a musl developer without subscribing to their mailing list. > > > This is from a conversation with Snobol maintainer Phil Budne: > >> > This one is from an old Asus EeePC 900, running AlpineLinux, which uses >> > the musl libc instead of glibc. A compile error ('IPPORT_RESERVED' >> > undeclared) in 'lib/auxil/bindresvport.c' was fixed by >> > '#include <netdb.h>' > > Thanks! > > I'd report it as a bug in libc.... IPPORT_RESERVED is a property of > on the wire protocol (or at least the local TCP stack), while > <netdb.h> is the interface for hostname lookups. > > Linux and BSD agree the constant comes from netinet/in.h > > And charmingly, they refuse to define an ifdef so you can tell > you're using their broken library (because they're never wrong): > > http://wiki.musl-libc.org/wiki/FAQ#Q:_why_is_there_no_MUSL_macro_.3F > > I've put this in after #include <errno.h>: > > #if !defined(IPPORT_RESERVED) && !defined(__GLIBC__) > /* > * could be using broken musl libc! > * they refuse to identify themselves: > * http://wiki.musl-libc.org/wiki/FAQ#Q:_why_is_there_no_MUSL_macro_.3F > */ > #include <netdb.h> > #endif I checked on both a Debian and FreeBSD machine and indeed, they both have it in netinet/in.h. What shall we do? William
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