Compiled just fine yesterday.  Latest commit I see is:

commit e7620eddea6d3b60309125d3ca958f39a68a6f59
Author: Dmitry Antipov <dmantipov@yand...>
Date:   Thu Jun 28 16:29:37 2012 +0400

    * window.h (struct window): Change type of 'hscroll',
    'min_hscroll' and 'last_point' from Lisp_Object to ptrdiff_t,
    'last_modified' and 'last_overlay_modified' to EMACS_INT.
    Adjust users accordingly.
    * xdisp.c (try_cursor_movement): Replace type check with eassert.
    * window.c (Fscroll_left, Fscroll_right): Change type of 'hscroll'
    from EMACS_INT to ptrdiff_t.
    (make_window): Omit redundant initialization.


If I get time, I'll bisect it.

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