default struct fields

compiler_tests.odin

@@ -13325,3 +13325,44 @@ main func() void {
 	testing.expect(t, unresolved_ok)
 	testing.expect_value(t, unresolved, types.U64)
 }
+
+@(test)
+milestone_44_struct_field_defaults_compile_and_run :: proc(t: ^testing.T) {
+	directory := "/tmp/brolang-test-struct-field-defaults"
+	main_path := "/tmp/brolang-test-struct-field-defaults/main.bro"
+	output := "/tmp/brolang-test-struct-field-defaults-output"
+	text := `Config :: struct {
+	count int = 7
+	enabled bool = true
+	name []u8 = "bro"
+	required i32
+}
+
+Lists :: struct { items [][]u8 = &[] }
+
+read func(value Config) i32 {
+	return value.required + value.count
+}
+
+ANSWER :: $read(Config{required = 35})
+
+main func() i32 {
+	defaults Config = Config{required = 35}
+	overridden Config = Config{count = 1, enabled = false, name = "x", required = 40}
+	lists Lists = Lists{}
+	if (ANSWER != 42) return 1
+	if (defaults.count != 7 or defaults.enabled == false) return 2
+	if (defaults.name.len != 3 or lists.items.len != 0) return 3
+	if (overridden.count != 1 or overridden.enabled or overridden.name.len != 1) return 4
+	return 0
+}
+`
+	_ = os2.remove_all(directory)
+	defer _ = os2.remove_all(directory)
+	defer _ = os.remove(output)
+	testing.expect(t, os.make_directory(directory) == nil)
+	testing.expect(t, os.write_entire_file(main_path, transmute([]byte)text))
+	testing.expect_value(t, compiler_core.compile_package(directory, output), 0)
+	state := run_executable(output)
+	testing.expect_value(t, state.exit_code, 0)
+}