Function check_format_string_regression

test/printf-test.cc:555–557

template <typename... Args>
void check_format_string_regression(fmt::string_view s, const Args&... args) {
  fmt::sprintf(s, args...);
}

TEST(printf_test, check_format_string_regression) {
  check_format_string_regression("%c%s", 'x', "");