From 20cb73d39f1ccb9386e45edfc644413edbade0bc Mon Sep 17 00:00:00 2001
From: qwertz19281 <dellen903@gmail.com>
Date: Thu, 4 Feb 2021 01:40:04 +0100
Subject: [PATCH] Vec::insert_slice_clone: fix unsound Vec after T::clone panic

---
 src/imp/vec.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/imp/vec.rs b/src/imp/vec.rs
index a24ed59..39cb0d4 100644
--- a/src/imp/vec.rs
+++ b/src/imp/vec.rs
@@ -81,6 +81,7 @@ impl<T> VecExt<T> for Vec<T> {
         }
 
         unsafe {
+            self.set_len(0);
             {
                 let mut p = self.as_mut_ptr().add(index);
                 ptr::copy(p, p.add(slen), vlen - index);