From 7a4741eaf892646e9d02e440c39fbbfa03f29fc3 Mon Sep 17 00:00:00 2001
From: Ryan Ofsky <ryan@ofsky.org>
Date: Thu, 20 Jul 2023 13:52:40 -0400
Subject: [PATCH] test: add static test for util::Result memory usage

Suggested by Martin Leitner-Ankerl <martin.ankerl@gmail.com>
https://github.com/bitcoin/bitcoin/pull/25722#discussion_r1174298529

Co-authored-by: Martin Leitner-Ankerl <martin.ankerl@gmail.com>
---
 src/test/result_tests.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/test/result_tests.cpp b/src/test/result_tests.cpp
index 5f3ff7876840c..ca825bc9d64f2 100644
--- a/src/test/result_tests.cpp
+++ b/src/test/result_tests.cpp
@@ -172,6 +172,12 @@ void ExpectFail(const util::Result<T, F>& result, bilingual_str str, Args&&... a
     BOOST_CHECK_EQUAL(result.GetFailure(), F{std::forward<Args>(args)...});
 }
 
+BOOST_AUTO_TEST_CASE(check_sizes)
+{
+    static_assert(sizeof(util::Result<int>) == sizeof(void*)*2);
+    static_assert(sizeof(util::Result<void>) == sizeof(void*));
+}
+
 BOOST_AUTO_TEST_CASE(check_returned)
 {
     ExpectResult(VoidSuccessFn(), true, {});