Add test for variant construction with duplicate types.
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@366032 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/std/utilities/variant/variant.variant/variant.ctor/T.pass.cpp b/test/std/utilities/variant/variant.variant/variant.ctor/T.pass.cpp
index d05e800..42a31f3 100644
--- a/test/std/utilities/variant/variant.variant/variant.ctor/T.pass.cpp
+++ b/test/std/utilities/variant/variant.variant/variant.ctor/T.pass.cpp
@@ -189,10 +189,22 @@
assert(std::get<0>(v) == 42);
}
+struct Bar {};
+struct Baz {};
+void test_construction_with_repeated_types() {
+ using V = std::variant<int, Bar, Baz, int, Baz, int, int>;
+ static_assert(!std::is_constructible<V, int>::value, "");
+ static_assert(!std::is_constructible<V, Baz>::value, "");
+ // OK, the selected type appears only once and so it shouldn't
+ // be affected by the duplicate types.
+ static_assert(std::is_constructible<V, Bar>::value, "");
+}
+
int main(int, char**) {
test_T_ctor_basic();
test_T_ctor_noexcept();
test_T_ctor_sfinae();
test_no_narrowing_check_for_class_types();
+ test_construction_with_repeated_types();
return 0;
}
