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-rw-r--r--lib/stdlib/src/gen_statem.erl50
1 files changed, 1 insertions, 49 deletions
diff --git a/lib/stdlib/src/gen_statem.erl b/lib/stdlib/src/gen_statem.erl
index fa14808f9a..d7e8504564 100644
--- a/lib/stdlib/src/gen_statem.erl
+++ b/lib/stdlib/src/gen_statem.erl
@@ -1161,19 +1161,6 @@ call_callback_mode(#{module := Module} = S) ->
catch
CallbackMode ->
callback_mode_result(S, CallbackMode);
- error:undef ->
- %% Process undef to check for the simple mistake
- %% of calling a nonexistent state function
- %% to make the undef more precise
- case erlang:get_stacktrace() of
- [{Module,callback_mode,[]=Args,_}
- |Stacktrace] ->
- {error,
- {undef_callback,{Module,callback_mode,Args}},
- Stacktrace};
- Stacktrace ->
- {error,undef,Stacktrace}
- end;
Class:Reason ->
{Class,Reason,erlang:get_stacktrace()}
end.
@@ -1231,7 +1218,7 @@ call_state_function(
try
case CallbackMode of
state_functions ->
- erlang:apply(Module, State, [Type,Content,Data]);
+ Module:State(Type, Content, Data);
handle_event_function ->
Module:handle_event(Type, Content, State, Data)
end
@@ -1241,41 +1228,6 @@ call_state_function(
catch
Result ->
{ok,Result,S};
- error:badarg ->
- case erlang:get_stacktrace() of
- [{erlang,apply,
- [Module,State,[Type,Content,Data]=Args],
- _}
- |Stacktrace]
- when CallbackMode =:= state_functions ->
- %% We get here e.g if apply fails
- %% due to State not being an atom
- {error,
- {undef_state_function,{Module,State,Args}},
- Stacktrace};
- Stacktrace ->
- {error,badarg,Stacktrace}
- end;
- error:undef ->
- %% Process undef to check for the simple mistake
- %% of calling a nonexistent state function
- %% to make the undef more precise
- case erlang:get_stacktrace() of
- [{Module,State,[Type,Content,Data]=Args,_}
- |Stacktrace]
- when CallbackMode =:= state_functions ->
- {error,
- {undef_state_function,{Module,State,Args}},
- Stacktrace};
- [{Module,handle_event,[Type,Content,State,Data]=Args,_}
- |Stacktrace]
- when CallbackMode =:= handle_event_function ->
- {error,
- {undef_state_function,{Module,handle_event,Args}},
- Stacktrace};
- Stacktrace ->
- {error,undef,Stacktrace}
- end;
Class:Reason ->
{Class,Reason,erlang:get_stacktrace()}
end.