Set warnings as errors

rebar.config

@@ -1,3 +1,4 @@
+{erl_opts, [debug_info, warnings_as_errors]}.
 {post_hooks, [
     {compile, "make zones"}
 ]}.

src/ezic_flatten.erl

@@ -284,7 +284,7 @@ finish_and_start_flat(max_year, FlatStub, DSTOffset) ->
 
 
 %% both timezone and rule are ending at the same time
-finish_flatzone_both(FlatStub=#flatzone{}, EndingZone=#zone{}, ChangingRule=#rule{save=NewDST}, EndingDST) ->
+finish_flatzone_both(FlatStub=#flatzone{}, EndingZone=#zone{}, _ChangingRule=#rule{save=NewDST}, EndingDST) ->
     %% ?debugVal(FlatStub),
 
     EndDatesP1={_,_,UD}= ezic_zone:project_end(EndingZone, EndingDST),

src/ezic_generator.erl

@@ -22,7 +22,7 @@ generate_links([#link{from = From, to = To} | Rest], MapFile) ->
   file:write(MapFile, io_lib:format("find(~p) -> find(~p);\n", [To, From])),
   generate_links(Rest, MapFile).
 
-generate_zones([], MapFile, Files) ->
+generate_zones([], _, Files) ->
   lists:foreach(fun({_, File}) ->
     file:write(File, "]."),
     file:close(File)