Updated test and expected output.

bench/good/symbolstartpos.mly

@@ -3,8 +3,8 @@
 %%
 (* Case: token in front. *)
 main: A B hop { $symbolstartpos, $symbolstartofs }
-(* Case: non-nullable symbol in front. *)
-hop: bar A B { $symbolstartpos }
+(* Case: epsilon symbol in front, followed with non-nullable symbol in front. *)
+hop: nothing bar A B { $symbolstartpos }
 (* Case: nullable symbol in front. *)
 bar: foo? B { $symbolstartpos }
 foo: C nothing {}

bench/good/symbolstartpos.opp.exp

@@ -13,9 +13,9 @@ let _symbolstartofs = _symbolstartpos.Lexing.pos_cnum in
               ( _symbolstartpos, _symbolstartofs )}
 
 hop:
-| _1 = bar _2 = A _3 = B
-    {let _symbolstartpos = _startpos__1_ in
-             ( _symbolstartpos )}
+| _1 = nothing _2 = bar _3 = A _4 = B
+    {let _symbolstartpos = _startpos__2_ in
+                     ( _symbolstartpos )}
 
 bar:
 | _1 = option_foo_ _2 = B