environment size limit in xargs.c

[Alan Iwi]

For your information, there is a slightly over-cautious sanity check on
environment size in xargs.c (findutils 4.1.6), which causes xargs to refuse
to run in a situation where it would actually be fine.

The code says:

  /* Sanity check for systems with huge ARG_MAX defines (e.g., Suns which
     have it at 1 meg).  Things will work fine with a large ARG_MAX but it
     will probably hurt the system more than it needs to; an array of this
     size is allocated.  */
  if (arg_max > 20 * 1024)
    arg_max = 20 * 1024;

I'm using a Linux 2.4 system (ARG_MAX is 128k in <linux/limits.h>).

Please could you either raise the sanity-check limit, or restrict the
range of systems to which it applies, with appropriate "#ifdef" lines
around this bit of code?

Thanks,

Alan Iwi