diff --git a/mozilla/js/ref/jsparse.c b/mozilla/js/ref/jsparse.c
index 3acc5a77dac..456bf57ee9a 100644
--- a/mozilla/js/ref/jsparse.c
+++ b/mozilla/js/ref/jsparse.c
@@ -2420,11 +2420,11 @@ PrimaryExpr(JSContext *cx, JSTokenStream *ts, JSTreeContext *tc)
 	 */
 	oldflags = tc->flags;
 	tc->flags &= ~TCF_IN_FOR_INIT;
-#endif /* JS_HAS_IN_OPERATOR */
+#endif
 	pn2 = Expr(cx, ts, tc);
 #if JS_HAS_IN_OPERATOR
 	tc->flags = oldflags;
-#endif /* JS_HAS_IN_OPERATOR */
+#endif
 	if (!pn2)
 	    return NULL;
 
@@ -2438,7 +2438,7 @@ PrimaryExpr(JSContext *cx, JSTokenStream *ts, JSTreeContext *tc)
       case TOK_STRING:
 #if JS_HAS_SHARP_VARS
 	notsharp = JS_TRUE;
-#endif /* JS_HAS_SHARP_VARS */
+#endif
 	/* FALL THROUGH */
       case TOK_NAME:
       case TOK_OBJECT:
@@ -2463,7 +2463,7 @@ PrimaryExpr(JSContext *cx, JSTokenStream *ts, JSTreeContext *tc)
 	pn->pn_dval = ts->token.t_dval;
 #if JS_HAS_SHARP_VARS
 	notsharp = JS_TRUE;
-#endif /* JS_HAS_SHARP_VARS */
+#endif
 	break;
 
       case TOK_PRIMARY:
@@ -2473,7 +2473,7 @@ PrimaryExpr(JSContext *cx, JSTokenStream *ts, JSTreeContext *tc)
 	pn->pn_op = ts->token.t_op;
 #if JS_HAS_SHARP_VARS
 	notsharp = JS_TRUE;
-#endif /* JS_HAS_SHARP_VARS */
+#endif
 	break;
 
 #if !JS_HAS_EXPORT_IMPORT
@@ -2508,7 +2508,7 @@ PrimaryExpr(JSContext *cx, JSTokenStream *ts, JSTreeContext *tc)
 	defsharp->pn_kid = pn;
 	return defsharp;
     }
-#endif /* JS_HAS_SHARP_VARS */
+#endif
     return pn;
 }
 
diff --git a/mozilla/js/ref/jsparse.h b/mozilla/js/ref/jsparse.h
index 4a2f837fdd5..a87f2b959ec 100644
--- a/mozilla/js/ref/jsparse.h
+++ b/mozilla/js/ref/jsparse.h
@@ -125,6 +125,9 @@ PR_BEGIN_EXTERN_C
  *                          each has pn_left: property id, pn_right: value
  *                          #n={...} produces TOK_DEFSHARP at head of list
  * TOK_DEFSHARP unary       pn_num: jsint value of n in #n=
+ *                          pn_kid: null for #n=[...] and #n={...}, primary
+ *                          if #n=primary for function, paren, name, object
+ *                          literal expressions
  * TOK_USESHARP nullary     pn_num: jsint value of n in #n#
  * TOK_RP       unary       pn_kid: parenthesized expression
  * TOK_NAME,    name        pn_atom: name, string, or object atom