Cleanup and convert miscellaneous checks to eassert.

* alloc.c (mark_interval): Fix comment, partially rephrase
old comment from intervals.h (see below).
* intervals.c (find_interval, adjust_intervals_for_insertion)
(delete_interval, adjust_intervals_for_deletion)
(graft_intervals_into_buffer, temp_set_point_both, copy_intervals):
Convert to eassert.
(adjust_intervals_for_insertion, make_new_interval):
Remove obsolete and unused code.
* intervals.h (struct interval): Remove obsolete comment.
* textprotp.c (erase_properties): Remove unused code.
(Fadd_text_properties, set_text_properties_1, Fremove_text_properties)
(Fremove_list_of_text_properties): Convert to eassert.

1 files changed, 1 insertions, 6 deletions

diff --git a/src/intervals.h b/src/intervals.h
index 8d2ee8346cf..d78289d897e 100644
--- a/src/intervals.h
+++ b/src/intervals.h
@@ -56,12 +56,7 @@ struct interval
   unsigned int front_sticky : 1;    /* Non-zero means text inserted just
 				       before this interval goes into it.  */
   unsigned int rear_sticky : 1;	    /* Likewise for just after it.  */
-
-  /* Properties of this interval.
-     The mark bit on this field says whether this particular interval
-     tree node has been visited.  Since intervals should never be
-     shared, GC aborts if it seems to have visited an interval twice.  */
-  Lisp_Object plist;
+  Lisp_Object plist;		    /* Other properties.  */
 };
 
 /* These are macros for dealing with the interval tree.  */