Malloc routines have overflow problems

[Jason Tishler <jason at tishler dot net>]

[Please CC me on replies because I'm not subscribed to this list.]

I would like to revisit the issue that Chris Faylor raised in the
following post:

    http://sources.redhat.com/ml/newlib/2002/msg00101.html

I have stumbled over the same problem with realloc():

    http://cygwin.com/ml/cygwin-developers/2002-07/msg00124.html

My patch is a "superset" of Chris's and solves the overflow problem in
both malloc() and realloc().  Is this an acceptable solution?  If so,
then I will gladly supply a ChangeLog entry.  If not, what would be?

Thanks,
Jason