structs are working

test/run_tests.cpp

@@ -477,6 +477,27 @@ export fn main(argc : isize, argv : *mut *mut u8, env : *mut *mut u8) -> i32 {
 }
     )SOURCE", "OK\n");
 
+    add_simple_case("structs", R"SOURCE(
+use "std.zig";
+
+export fn main(argc : isize, argv : *mut *mut u8, env : *mut *mut u8) -> i32 {
+    let mut foo : Foo;
+    foo.a = foo.a + 1;
+    foo.b = foo.a == 1;
+    test_foo(foo);
+    return 0;
+}
+struct Foo {
+    a : i32,
+    b : bool,
+    c : f32,
+}
+fn test_foo(foo : Foo) {
+    if foo.b {
+        print_str("OK\n" as string);
+    }
+}
+    )SOURCE", "OK\n");
 }
 
 static void add_compile_failure_test_cases(void) {