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-rw-r--r--lib/stdlib/test/erl_lint_SUITE.erl35
1 files changed, 33 insertions, 2 deletions
diff --git a/lib/stdlib/test/erl_lint_SUITE.erl b/lib/stdlib/test/erl_lint_SUITE.erl
index 5d189006a1..919489e3d7 100644
--- a/lib/stdlib/test/erl_lint_SUITE.erl
+++ b/lib/stdlib/test/erl_lint_SUITE.erl
@@ -63,7 +63,7 @@
too_many_arguments/1,
basic_errors/1,bin_syntax_errors/1,
predef/1,
- maps/1
+ maps/1,maps_type/1
]).
% Default timetrap timeout (set in init_per_testcase).
@@ -91,7 +91,8 @@ all() ->
otp_11772, otp_11771, export_all,
bif_clash, behaviour_basic, behaviour_multiple,
otp_7550, otp_8051, format_warn, {group, on_load},
- too_many_arguments, basic_errors, bin_syntax_errors, predef, maps].
+ too_many_arguments, basic_errors, bin_syntax_errors, predef,
+ maps,maps_type].
groups() ->
[{unused_vars_warn, [],
@@ -3394,6 +3395,36 @@ maps(Config) ->
[] = run(Config, Ts),
ok.
+maps_type(Config) when is_list(Config) ->
+ Ts = [
+ {maps_type1,
+ <<"
+ -type m() :: #{a => integer()}.
+ -spec t1(#{k=>term()}) -> {term(), map()}.
+
+ t1(#{k:=V}=M) -> {V,M}.
+
+ -spec t2(m()) -> integer().
+
+ t2(#{a:=V}) -> V.
+ ">>,
+ [],
+ []},
+ {maps_type2,
+ <<"
+ %% Built-in var arity map type:
+ -type map() :: tuple().
+ -type a() :: map().
+
+ -spec t(a()) -> a().
+ t(M) -> M.
+ ">>,
+ [],
+ {errors,[{3,erl_lint,{redefine_type,{map,0}}}],[]}}],
+ [] = run(Config, Ts),
+ ok.
+
+
run(Config, Tests) ->
F = fun({N,P,Ws,E}, BadL) ->
case catch run_test(Config, P, Ws) of