From eb26d5b7c928646983c53bcbd33ce578acbf238f Mon Sep 17 00:00:00 2001
From: Alex Crichton <alex@alexcrichton.com>
Date: Mon, 11 Sep 2017 11:01:48 -0700
Subject: [PATCH] rustbuild: Fix a distribution bug with rustdoc

Apparently `File::create` was called when there was an existing hard link or the
like, causing an existing file to get accidentally truncated!

Closes #44487
---
 src/bootstrap/dist.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/bootstrap/dist.rs b/src/bootstrap/dist.rs
index e18850b08b167..8e11e1b0580e9 100644
--- a/src/bootstrap/dist.rs
+++ b/src/bootstrap/dist.rs
@@ -900,6 +900,7 @@ impl Step for PlainSourceTarball {
 fn install(src: &Path, dstdir: &Path, perms: u32) {
     let dst = dstdir.join(src.file_name().unwrap());
     t!(fs::create_dir_all(dstdir));
+    drop(fs::remove_file(&dst));
     {
         let mut s = t!(fs::File::open(&src));
         let mut d = t!(fs::File::create(&dst));