From 0af97c623e8d25ce8d2ad905f6e98089be6b1061 Mon Sep 17 00:00:00 2001
From: Soon <sooniter@gmail.com>
Date: Mon, 6 May 2024 13:31:31 +0800
Subject: [PATCH] fix(rspack_loader_runner): char_boundary panic when debug
 content (#6412)

---
 crates/rspack_loader_runner/src/content.rs | 5 ++++-
 crates/rspack_loader_runner/src/lib.rs     | 1 +
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/crates/rspack_loader_runner/src/content.rs b/crates/rspack_loader_runner/src/content.rs
index 96078d10ed8..421c3aeb171 100644
--- a/crates/rspack_loader_runner/src/content.rs
+++ b/crates/rspack_loader_runner/src/content.rs
@@ -87,7 +87,10 @@ impl Debug for Content {
     };
 
     content
-      .field(ty, &s[0..usize::min(s.len(), 20)].to_owned())
+      .field(
+        ty,
+        &s[0..usize::min(s.len(), s.ceil_char_boundary(20))].to_owned(),
+      )
       .finish()
   }
 }
diff --git a/crates/rspack_loader_runner/src/lib.rs b/crates/rspack_loader_runner/src/lib.rs
index 1d8e3c6c40a..a3a0987c4c7 100644
--- a/crates/rspack_loader_runner/src/lib.rs
+++ b/crates/rspack_loader_runner/src/lib.rs
@@ -1,4 +1,5 @@
 #![feature(let_chains)]
+#![feature(round_char_boundary)]
 
 mod content;
 mod loader;