Regression test failure - tests/ts/ipcs/limits2

[Bruce Dubbs <bruce.dubbs@gmail.com>]

When testing util-linux-2.25, I was suprised to get a test failure. 
Running it down, I found tests/ts/ipcs/limits2 is doing:

if [ $(</proc/sys/kernel/shmall) -ge $(bc <<<"2^64 / $PAGE_SIZE") ];

The problem is that starting with the 3.16 kernel the shmall value is 
18446744073692774399 which is the max value of an unsigned long on a 
64-bit system (UINT64_MAX).  Bash doesn't like this value and says:

"18446744073692774399: integer expression expected"

I can work around this by setting shmall before running the test, but 
there is a problem with either the test or in the kernel.

I note that the kernel's shmmax value is also set to UINT64_MAX.

What's the best way to approach this?

   -- Bruce Dubbs
      linuxfromscratch.org