I have a RH5.2 system with ncurses-4.2 and a RH6.0 system
with ncurses-4.2.  If I compile the following on RH5.2 and
then try and run it on RH6.0 it coredumps.

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#include <curses.h>

int
main (int argc, char **argv)
{
  int c;

  initscr(); cbreak(); noecho();

  nonl();
  intrflush(stdscr, FALSE);
  keypad(stdscr, TRUE);

  c = mvinch(1,1);

  endwin();

  return c;
}
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