From 8580c57c0c6a526c1a2caeb4c2968ed5837d30be Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marin=20Ver=C5=A1i=C4=87?= <marin.versic101@gmail.com>
Date: Mon, 23 Sep 2024 09:50:03 +0200
Subject: [PATCH] fix(ffi): Add implementation of Niche for `Option<Box<R>>`
 (#5094)
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Signed-off-by: Marin Veršić <marin.versic101@gmail.com>
---
 crates/iroha_ffi/src/option.rs | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/crates/iroha_ffi/src/option.rs b/crates/iroha_ffi/src/option.rs
index afce6dd5b8..cbac605611 100644
--- a/crates/iroha_ffi/src/option.rs
+++ b/crates/iroha_ffi/src/option.rs
@@ -1,5 +1,6 @@
 //! Logic related to the conversion of [`Option<T>`] to and from FFI-compatible representation
 
+use alloc::boxed::Box;
 use core::mem::MaybeUninit;
 
 use crate::{
@@ -53,6 +54,13 @@ where
     const NICHE_VALUE: Self::ReprC = core::ptr::null_mut();
 }
 
+impl<R, C> Niche<'_> for Box<R>
+where
+    Self: FfiType<ReprC = *mut C>,
+{
+    const NICHE_VALUE: Self::ReprC = core::ptr::null_mut();
+}
+
 impl<R: OptionIr> Ir for Option<R> {
     type Type = R::Type;
 }