1 files changed, 35 insertions, 0 deletions
diff --git a/lib/hipe/test/maps_SUITE_data/maps_guard_sequence.erl b/lib/hipe/test/maps_SUITE_data/maps_guard_sequence.erl
new file mode 100644
index 0000000000..4eb18dcea1
--- /dev/null
+++ b/lib/hipe/test/maps_SUITE_data/maps_guard_sequence.erl
@@ -0,0 +1,35 @@
+-module(maps_guard_sequence).
+-export([test/0]).
+
+test() ->
+	{1, "a"} = map_guard_sequence_1(#{seq=>1,val=>id("a")}),
+	{2, "b"} = map_guard_sequence_1(#{seq=>2,val=>id("b")}),
+	{3, "c"} = map_guard_sequence_1(#{seq=>3,val=>id("c")}),
+	{4, "d"} = map_guard_sequence_1(#{seq=>4,val=>id("d")}),
+	{5, "e"} = map_guard_sequence_1(#{seq=>5,val=>id("e")}),
+
+	{1,M1}       = map_guard_sequence_2(M1 = id(#{a=>3})),
+	{2,M2}       = map_guard_sequence_2(M2 = id(#{a=>4, b=>4})),
+	{3,gg,M3}    = map_guard_sequence_2(M3 = id(#{a=>gg, b=>4})),
+	{4,sc,sc,M4} = map_guard_sequence_2(M4 = id(#{a=>sc, b=>3, c=>sc2})),
+	{5,kk,kk,M5} = map_guard_sequence_2(M5 = id(#{a=>kk, b=>other, c=>sc2})),
+
+	%% error case
+	{'EXIT',{function_clause,_}} = (catch map_guard_sequence_1(#{seq=>6,val=>id("e")})),
+	{'EXIT',{function_clause,_}} = (catch map_guard_sequence_2(#{b=>5})),
+	ok.
+
+map_guard_sequence_1(#{seq:=1=Seq, val:=Val}) -> {Seq,Val};
+map_guard_sequence_1(#{seq:=2=Seq, val:=Val}) -> {Seq,Val};
+map_guard_sequence_1(#{seq:=3=Seq, val:=Val}) -> {Seq,Val};
+map_guard_sequence_1(#{seq:=4=Seq, val:=Val}) -> {Seq,Val};
+map_guard_sequence_1(#{seq:=5=Seq, val:=Val}) -> {Seq,Val}.
+
+map_guard_sequence_2(#{ a:=3 }=M) -> {1, M};
+map_guard_sequence_2(#{ a:=4 }=M) -> {2, M};
+map_guard_sequence_2(#{ a:=X, a:=X, b:=4 }=M) -> {3,X,M};
+map_guard_sequence_2(#{ a:=X, a:=Y, b:=3 }=M) when X =:= Y -> {4,X,Y,M};
+map_guard_sequence_2(#{ a:=X, a:=Y }=M) when X =:= Y -> {5,X,Y,M}.
+
+%% Use this function to avoid compile-time evaluation of an expression.
+id(I) -> I.