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

1 files changed, 1 insertions, 1 deletions

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()?;
                 }
             }