From e1d3c471d75bbc4360eee17178ccb32dce348542 Mon Sep 17 00:00:00 2001
From: nabijaczleweli <nabijaczleweli@gmail.com>
Date: Sat, 31 Mar 2018 19:12:29 +0200
Subject: [PATCH] Open the file as write before trying to flush it

This should be enough and shouldn't require append(true) since we're not
explicitly writing anything so we're not flushing it so we've no risk of
overwriting it
---
 src/librustc_trans/back/link.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/librustc_trans/back/link.rs b/src/librustc_trans/back/link.rs
index 46defb9e733..5da4667af91 100644
--- a/src/librustc_trans/back/link.rs
+++ b/src/librustc_trans/back/link.rs
@@ -894,7 +894,7 @@ fn exec_linker(sess: &Session, cmd: &mut Command, out_filename: &Path, tmpdir: &
 
         if let &Ok(ref out) = command_output {
             if out.status.success() {
-                if let Ok(of) = fs::File::open(out_filename) {
+                if let Ok(of) = fs::OpenOptions::new().write(true).open(out_filename) {
                     of.sync_all()?;
                 }
             }