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-rw-r--r--lib/dialyzer/test/small_SUITE_data/src/collapse_lists/a.erl9
1 files changed, 9 insertions, 0 deletions
diff --git a/lib/dialyzer/test/small_SUITE_data/src/collapse_lists/a.erl b/lib/dialyzer/test/small_SUITE_data/src/collapse_lists/a.erl
new file mode 100644
index 0000000000..7efe870b0d
--- /dev/null
+++ b/lib/dialyzer/test/small_SUITE_data/src/collapse_lists/a.erl
@@ -0,0 +1,9 @@
+-module(a).
+-export([g/1]).
+
+-export_type([a/0, t/0]).
+-type a() :: integer().
+-type t() :: a() | maybe_improper_list(t(), t()).
+
+-spec g(t()) -> t().
+g(X) -> X.