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-rw-r--r--erts/preloaded/src/erlang.erl8
-rw-r--r--erts/preloaded/src/init.erl33
2 files changed, 25 insertions, 16 deletions
diff --git a/erts/preloaded/src/erlang.erl b/erts/preloaded/src/erlang.erl
index f3f8696f32..5283519c0a 100644
--- a/erts/preloaded/src/erlang.erl
+++ b/erts/preloaded/src/erlang.erl
@@ -977,17 +977,15 @@ group_leader(_GroupLeader, _Pid) ->
erlang:nif_error(undefined).
%% halt/0
-%% Shadowed by erl_bif_types: erlang:halt/0
-spec halt() -> no_return().
halt() ->
- erlang:nif_error(undefined).
+ erlang:halt(0, []).
%% halt/1
-%% Shadowed by erl_bif_types: erlang:halt/1
-spec halt(Status) -> no_return() when
Status :: non_neg_integer() | 'abort' | string().
-halt(_Status) ->
- erlang:nif_error(undefined).
+halt(Status) ->
+ erlang:halt(Status, []).
%% halt/2
%% Shadowed by erl_bif_types: erlang:halt/2
diff --git a/erts/preloaded/src/init.erl b/erts/preloaded/src/init.erl
index 618b53f6bb..45468b3b9c 100644
--- a/erts/preloaded/src/init.erl
+++ b/erts/preloaded/src/init.erl
@@ -90,6 +90,7 @@
-define(ON_LOAD_HANDLER, init__boot__on_load_handler).
+
debug(false, _) -> ok;
debug(_, T) -> erlang:display(T).
@@ -173,7 +174,25 @@ stop() -> init ! {stop,stop}, ok.
-spec stop(Status) -> 'ok' when
Status :: non_neg_integer() | string().
-stop(Status) -> init ! {stop,{stop,Status}}, ok.
+stop(Status) when is_integer(Status), Status >= 0 ->
+ stop_1(Status);
+stop(Status) when is_list(Status) ->
+ case is_bytelist(Status) of
+ true ->
+ stop_1(Status);
+ false ->
+ erlang:error(badarg)
+ end;
+stop(_) ->
+ erlang:error(badarg).
+
+is_bytelist([B|Bs]) when is_integer(B), B >= 0, B < 256 -> is_bytelist(Bs);
+is_bytelist([]) -> true;
+is_bytelist(_) -> false.
+
+%% Note that we check the type of Status beforehand to ensure that
+%% the call to halt(Status) by the init process cannot fail
+stop_1(Status) -> init ! {stop,{stop,Status}}, ok.
-spec boot(BootArgs) -> no_return() when
BootArgs :: [binary()].
@@ -285,21 +304,13 @@ things_to_string([]) ->
"".
halt_string(String, List) ->
- HaltString = String ++ things_to_string(List),
- if
- length(HaltString)<199 -> HaltString;
- true -> first198(HaltString, 198)
- end.
-
-first198([H|T], N) when N>0 ->
- [H|first198(T, N-1)];
-first198(_, 0) ->
- [].
+ String ++ things_to_string(List).
%% String = string()
%% List = [string() | atom() | pid() | number()]
%% Any other items in List, such as tuples, are ignored when creating
%% the string used as argument to erlang:halt/1.
+-spec crash(_, _) -> no_return().
crash(String, List) ->
halt(halt_string(String, List)).