[Bug c/59933] for loop goes wild with assert() enabled

[warnerme at ptd dot net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59933

--- Comment #1 from Mark Warner <warnerme at ptd dot net> ---
Created attachment 31945
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=31945&action=edit
C source of subroutines which contain problem for loop

This is a file from OPUS.  As sent it can't be run, but the problem was bad
enough that I thought looking at the generated code might be enough.
All, except system, include files are inlined.