Hi Sebastian, On 11/22/20 11:37 PM, Sebastian Kirmayer wrote: > The minimum value of _POSIX_C_SOURCE for getnameinfo() was mistyped as 201112L > (not a real POSIX version), it should be 200112L. This is the same typo that > was fixed for getaddrinfo.3 in commit 94db8ae1824ada8561c3dbbbed88a8a9175c4886 > > According to the current documentation, this file should not compile, but > it does: > > #define _POSIX_C_SOURCE 200112L > #include <netdb.h> > int (*mygetnameinfo)() = getnameinfo; > > (If _POSIX_C_SOURCE is changed to 200111L, the program does no longer compile.) > > man3/getnameinfo.3: > > @@ -27,7 +27,7 @@ Feature Test Macro Requirements for glibc (see > .RE > .PP > .BR getnameinfo (): > - Since glibc 2.22: _POSIX_C_SOURCE >= 201112L > + Since glibc 2.22: _POSIX_C_SOURCE >= 200112L > Glibc 2.21 and earlier: _POSIX_C_SOURCE > .ad b > .SH DESCRIPTION Thanks for taking the time to report, but I think you must be looking at a rather old version of the manual pages. It looks like that typo was fixed about three years ago in the Git tree! Thanks, Michael -- Michael Kerrisk Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/ Linux/UNIX System Programming Training: http://man7.org/training/
