1 files changed, 24 insertions, 0 deletions
diff --git a/lib/hipe/test/maps_SUITE_data/maps_match_and_update_literals.erl b/lib/hipe/test/maps_SUITE_data/maps_match_and_update_literals.erl
new file mode 100644
index 0000000000..29a6a29290
--- /dev/null
+++ b/lib/hipe/test/maps_SUITE_data/maps_match_and_update_literals.erl
@@ -0,0 +1,24 @@
+-module(maps_match_and_update_literals).
+-export([test/0]).
+
+test() ->
+    Map = #{x=>0,y=>"untouched",z=>"also untouched",q=>1},
+    #{x:=16,q:=21,y:="untouched",z:="also untouched"} = loop_match_and_update_literals_x_q(Map, [
+	    {1,2},{3,4},{5,6},{7,8}
+	]),
+    M0 = id(#{ "hi" => "hello", int => 3, <<"key">> => <<"value">>,
+	    4 => number, 18446744073709551629 => wat}),
+    M1 = id(#{}),
+    M2 = M1#{ "hi" => "hello", int => 3, <<"key">> => <<"value">>,
+	4 => number, 18446744073709551629 => wat},
+    M0 = M2,
+
+    #{ 4 := another_number, int := 3 } = M2#{ 4 => another_number },
+    ok.
+
+loop_match_and_update_literals_x_q(Map, []) -> Map;
+loop_match_and_update_literals_x_q(#{q:=Q0,x:=X0} = Map, [{X,Q}|Vs]) ->
+    loop_match_and_update_literals_x_q(Map#{q=>Q0+Q,x=>X0+X},Vs).
+
+%% Use this function to avoid compile-time evaluation of an expression.
+id(I) -> I.