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* src/buffer.c (Fmove_overflay): Clip instead of trying to fix bug 9642.

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This commit is contained in:
Paul Eggert 2012-05-25 13:30:19 -07:00
parent 23d10a2703
commit 024811862b
2 changed files with 16 additions and 14 deletions
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5
src/ChangeLog
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@ -1,8 +1,6 @@
2012-05-25 Paul Eggert <eggert@cs.ucla.edu>
Fix integer width and related bugs (Bug#9874).
* process.h (struct Lisp_Process): Members tick and update_tick
are now of type EMACS_INT, not int.
* alloc.c (pure_bytes_used_lisp, pure_bytes_used_non_lisp):
(allocate_vectorlike, buffer_memory_full, struct sdata, SDATA_SIZE)
(string_bytes, check_sblock, allocate_string_data):
@ -46,6 +44,7 @@
(Foverlays_at, Fnext_overlay_change, Fprevious_overlay_change):
Omit pointer cast, which isn't needed anyway, and doesn't work
after the EMACS_INT -> ptrdiff_t change.
(Fmove_overlay): Clip BEG and END to ptrdiff_t to avoid overflow.
* buffer.h: Adjust decls to match defn changes elsewhere.
(struct buffer_text, struct buffer):
Use ptrdiff_t, not EMACS_INT, where ptrdiff_t is wide enough.
@ -587,6 +586,8 @@
overflow checking on durations.
(emacs_get_tty_pgrp, Fprocess_running_child_p, process_send_signal):
Don't assume pid_t fits in int.
* process.h (struct Lisp_Process): Members tick and update_tick
are now of type EMACS_INT, not int.
* puresize.h (PURESIZE_RATIO): Shrink this to 8/6 on 32-bit hosts
configured --with-wide-int.
* scroll.c (calculate_scrolling, calculate_direct_scrolling)

25
src/buffer.c
View file

@ -3697,21 +3697,18 @@ buffer. */)
CHECK_NUMBER_COERCE_MARKER (beg);
CHECK_NUMBER_COERCE_MARKER (end);
if (XINT (beg) > XINT (end))
{
Lisp_Object temp;
temp = beg; beg = end; end = temp;
}
Fset_marker (OVERLAY_START (overlay), beg, buffer);
Fset_marker (OVERLAY_END (overlay), end, buffer);
n_beg = marker_position (OVERLAY_START (overlay));
n_end = marker_position (OVERLAY_END (overlay));
n_beg = clip_to_bounds (PTRDIFF_MIN, XINT (beg), PTRDIFF_MAX);
n_end = clip_to_bounds (PTRDIFF_MIN, XINT (end), PTRDIFF_MAX);
if (n_beg == n_end && ! NILP (Foverlay_get (overlay, Qevaporate)))
return Fdelete_overlay (overlay);
if (n_beg > n_end)
{
ptrdiff_t temp;
temp = n_beg; n_beg = n_end; n_end = temp;
}
specbind (Qinhibit_quit, Qt);
obuffer = Fmarker_buffer (OVERLAY_START (overlay));
@ -3761,8 +3758,12 @@ buffer. */)
eassert (XOVERLAY (overlay)->next == NULL);
}
Fset_marker (OVERLAY_START (overlay), beg, buffer);
Fset_marker (OVERLAY_END (overlay), end, buffer);
/* Put the overlay on the wrong list. */
if (n_end < b->overlay_center)
end = OVERLAY_END (overlay);
if (OVERLAY_POSITION (end) < b->overlay_center)
{
XOVERLAY (overlay)->next = b->overlays_after;
b->overlays_after = XOVERLAY (overlay);