[Bug 3049] ssh startup time on OSX is linear to _SC_OPEN_MAX

[bugzilla-daemon at bugzilla.mindrot.org]

https://bugzilla.mindrot.org/show_bug.cgi?id=3049

--- Comment #7 from Darren Tucker <dtucker at dtucker.net> ---
I don't think the retries are worth it in this context either.  I'm not
sure it's even possible for an FD to change under it, but if so this
could be handled by the fallback.

Also noticed this warning this because "got" gets promoted:

bsd-closefrom.c:132:16: warning: comparison of integers of different
signs:
      'int' and 'unsigned long' [-Wsign-compare]
        for (i = 0; i < got / PROC_PIDLISTFD_SIZE; i++) {
                    ~ ^ ~~~~~~~~~~~~~~~~~~~~~~~~~
$ grep -r PROC_PIDLISTFD_SIZE /usr/include
/usr/include//sys/proc_info.h:#define PROC_PIDLISTFD_SIZE              
(sizeof(struct proc_fdinfo))

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