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-rw-r--r--lib/dialyzer/test/underspecs_SUITE_data/src/arr.erl41
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diff --git a/lib/dialyzer/test/underspecs_SUITE_data/src/arr.erl b/lib/dialyzer/test/underspecs_SUITE_data/src/arr.erl
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+++ b/lib/dialyzer/test/underspecs_SUITE_data/src/arr.erl
@@ -0,0 +1,41 @@
+-module(arr).
+
+%% http://erlang.org/pipermail/erlang-questions/2014-August/080445.html
+
+-define(A, array).
+
+-export([test/3, test2/3, test3/3, test4/3, test5/3, test6/3]).
+
+-spec test(?A:array(T), non_neg_integer(), T) -> ?A:array(T).
+
+test(Array, N, Value) ->
+ ?A:set(N, Value, Array).
+
+-spec test2(?A:array(T), non_neg_integer(), T) -> ?A:array(T).
+
+test2(Array, N, Value) when N > 0 ->
+ ?A:set(N, Value, Array).
+
+-spec test3(?A:array(T), non_neg_integer(), _) -> ?A:array(T).
+
+test3(Array, N, Value) ->
+ ?A:set(N, Value, Array).
+
+-spec test4(?A:array(T), non_neg_integer(), _) -> ?A:array(T).
+
+test4(Array, N, Value) when N > 0 ->
+ ?A:set(N, Value, Array).
+
+-spec test5(?A:array(T), non_neg_integer(), T) -> ?A:array(T).
+
+test5(Array, N, Value) when is_integer(Value) ->
+ ?A:set(N, Value, Array).
+
+%% One would ideally want a warning also for test6(), but the current
+%% analysis of parametrized opaque types is not strong enough to
+%% discover this.
+-spec test6(?A:array(integer()), non_neg_integer(), integer()) ->
+ ?A:array(any()).
+
+test6(Array, N, Value) ->
+ ?A:set(N, Value, Array).