message: Add minimal failing unit test.
diff: @@ -1838,6 +1838,31 @@ TEST_TYPES(StringIndex_Insensitive_Unicode, non_nullable, nullable)
  */
  +
  +TEST_TYPES(StringIndex_45, non_nullable, nullable)
  +{
  + constexpr bool nullable = TEST_TYPE::value;
  +
  + ref_type ref = StringColumn::create(Allocator::get_default());
  + StringColumn col(Allocator::get_default(), ref, nullable);
  + col.create_search_index();
  + std::string a4 = std::string(4, 'a');
  + std::string A5 = std::string(5, 'A');
  +
  + col.add(a4);
  + col.add(a4);
  +
  + ref_type results_ref = IntegerColumn::create(Allocator::get_default());
  + IntegerColumn res(Allocator::get_default(), results_ref);
  +
  + col.find_all(res, A5, 0, realm::npos, true);
  + CHECK_EQUAL(res.size(), 0);
  +
  + res.destroy();
  + col.destroy();
  +}
  +
  +
  namespace {
  std::string create_random_a_string(size_t max_len) {
  