From 38e452d2b732f5bb5604bd316b15f7c936d0a757 Mon Sep 17 00:00:00 2001
From: Andrei Marinica <andrei.marinica@multiversx.com>
Date: Fri, 5 Apr 2024 22:32:43 +0300
Subject: [PATCH] ManagedBufferBuilder fix

---
 framework/base/src/formatter/formatter_traits.rs               | 2 +-
 .../types/managed/wrapped/builder/managed_buffer_builder.rs    | 3 +--
 2 files changed, 2 insertions(+), 3 deletions(-)

diff --git a/framework/base/src/formatter/formatter_traits.rs b/framework/base/src/formatter/formatter_traits.rs
index 015641e3b6..7faa0b00f5 100644
--- a/framework/base/src/formatter/formatter_traits.rs
+++ b/framework/base/src/formatter/formatter_traits.rs
@@ -19,7 +19,7 @@ pub trait FormatByteReceiver {
     fn append_managed_buffer_binary(&mut self, item: &ManagedBuffer<Self::Api>);
 }
 
-pub trait FormatBuffer {
+pub trait FormatBuffer: Default {
     fn append_ascii(&mut self, ascii: &[u8]);
 
     fn append_display<T: SCDisplay>(&mut self, item: &T);
diff --git a/framework/base/src/types/managed/wrapped/builder/managed_buffer_builder.rs b/framework/base/src/types/managed/wrapped/builder/managed_buffer_builder.rs
index ac3b733ac7..b65aa8e0e0 100644
--- a/framework/base/src/types/managed/wrapped/builder/managed_buffer_builder.rs
+++ b/framework/base/src/types/managed/wrapped/builder/managed_buffer_builder.rs
@@ -155,10 +155,9 @@ where
     }
 }
 
-impl<M, Impl> FormatBuffer for ManagedBufferBuilder<M, Impl>
+impl<M> FormatBuffer for ManagedBufferBuilder<M, ManagedBufferImplDefault<M>>
 where
     M: ManagedTypeApi,
-    Impl: ManagedBufferBuilderImpl<M>,
 {
     fn append_ascii(&mut self, ascii: &[u8]) {
         self.append_bytes(ascii)