bug#24892: {s, }brk removed from FreeBSD 11.x and later, arm64 architecture

[Eli Zaretskii]

> From: ashish.is@lostca.se (Ashish SHUKLA)
> Date: Mon, 07 Nov 2016 11:31:17 +0530
> 
> As mentioned in the subject, {,s}brk syscalls are removed from arm64
> architecture on FreeBSD 11.x[1].

Are they mad?

Thanks for reporting this.

A "fix" for memory-limit is simple, like NS already does (but we will
need a configure-time test for sbrk).  The issue with unexelf is more
serious.  I guess we will have to use mmap (or the result of the
existing call to it) instead?