1 files changed, 20 insertions, 0 deletions
diff --git a/lib/hipe/test/maps_SUITE_data/maps_build_and_match_aliasing.erl b/lib/hipe/test/maps_SUITE_data/maps_build_and_match_aliasing.erl
new file mode 100644
index 0000000000..14d8320cdf
--- /dev/null
+++ b/lib/hipe/test/maps_SUITE_data/maps_build_and_match_aliasing.erl
@@ -0,0 +1,20 @@
+-module(maps_build_and_match_aliasing).
+-export([test/0]).
+
+test() ->
+    M1 = id(#{a=>1,b=>2,c=>3,d=>4}),
+    #{c:=C1=_=_=C2} = M1,
+    true = C1 =:= C2,
+    #{a:=A,a:=A,a:=A,b:=B,b:=B} = M1,
+    #{a:=A,a:=A,a:=A,b:=B,b:=B,b:=2} = M1,
+    #{a:=A=1,a:=A,a:=A,b:=B=2,b:=B,b:=2} = M1,
+    #{c:=C1, c:=_, c:=3, c:=_, c:=C2} = M1,
+    #{c:=C=_=3=_=C} = M1,
+
+    M2 = id(#{"a"=>1,"b"=>2,"c"=>3,"d"=>4}),
+    #{"a":=A2,"a":=A2,"a":=A2,"b":=B2,"b":=B2,"b":=2} = M2,
+    #{"a":=_,"a":=_,"a":=_,"b":=_,"b":=_,"b":=2} = M2,
+    ok.
+
+%% Use this function to avoid compile-time evaluation of an expression.
+id(I) -> I.