From 104833112878b6a100597144246755ba753e9381 Mon Sep 17 00:00:00 2001
From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Wed, 13 Apr 2022 10:54:19 +0100
Subject: [PATCH] Mark default_builder_field with cfg(test)

Apropos
  https://github.com/colin-kiegel/rust-derive-builder/pull/245#discussion_r843042402
---
 derive_builder_core/src/builder_field.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/derive_builder_core/src/builder_field.rs b/derive_builder_core/src/builder_field.rs
index ec7567b4..209ec84e 100644
--- a/derive_builder_core/src/builder_field.rs
+++ b/derive_builder_core/src/builder_field.rs
@@ -117,6 +117,7 @@ impl<'a> BuilderField<'a> {
 
 /// Helper macro for unit tests. This is _only_ public in order to be accessible
 /// from doc-tests too.
+#[cfg(test)] // This contains a Box::leak, so is suitable only for tests
 #[doc(hidden)]
 #[macro_export]
 macro_rules! default_builder_field {