diff --git a/single_file_tests/hello_main.cc b/single_file_tests/hello_main.cc
new file mode 100644
index 0000000..61338d2
--- /dev/null
+++ b/single_file_tests/hello_main.cc
@@ -0,0 +1,7 @@
+#include <iostream>
+
+// compile: c++ --std=c++17 hello_main.cc
+auto main(int argc, char** argv) -> int {
+  std::cout << "hello, have: " << argc << " args" << std::endl;
+}
+