From d8530d0fa31224a2506a0932af5ac18d86c1bb0f Mon Sep 17 00:00:00 2001
From: Paolo Barbolini <paolo@paolo565.org>
Date: Fri, 18 Jun 2021 15:14:22 +0200
Subject: [PATCH] Use `copy_nonoverlapping` to copy `bytes` in
 `String::insert_bytes`

---
 library/alloc/src/string.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/library/alloc/src/string.rs b/library/alloc/src/string.rs
index 93f5fe45cd6..a34f530762d 100644
--- a/library/alloc/src/string.rs
+++ b/library/alloc/src/string.rs
@@ -1451,7 +1451,7 @@ unsafe fn insert_bytes(&mut self, idx: usize, bytes: &[u8]) {
 
         unsafe {
             ptr::copy(self.vec.as_ptr().add(idx), self.vec.as_mut_ptr().add(idx + amt), len - idx);
-            ptr::copy(bytes.as_ptr(), self.vec.as_mut_ptr().add(idx), amt);
+            ptr::copy_nonoverlapping(bytes.as_ptr(), self.vec.as_mut_ptr().add(idx), amt);
             self.vec.set_len(len + amt);
         }
     }