I would presume that applies to the functions documented on the page, not getaddrinfo which is mentioned only in passing. This is reenforced by getaddrinfo having its own documentation page.
Just for amusement value, here's a couple of bug reports of gethostbyaddr_r() crashing under load - Tuesday, March 27, 2012, 5:10:57 PM, you wrote: > Search for the line: > "The lookup functions above all have one in common: they are not reentrant > and therefore unusable in multi-threaded applications. Therefore provides > the GNU C library a new set of functions which can be used in this context." > Perhaps it operates differently if _POSIX_SOURCE is defined or this > documentation is old although the former doesn't seem to be the case.
