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+2012-08-26  Paul Eggert  <eggert@cs.ucla.edu>
+
+        * lisp.h (ASET): Remove attempt to detect side effects.
+        It was meant to be temporary and it often doesn't work,
+        because when IDX has side effects the behavior of IDX==IDX
+        is undefined.  See Stefan Monnier in
+        <http://lists.gnu.org/archive/html/emacs-devel/2012-08/msg00762.html>.
+
 2012-08-26  Barry OReilly  <gundaetiapo@gmail.com>  (tiny change)
 
         * lisp.h (functionp): New function (extracted from Ffunctionp).