commit 70dd22fb3b6a66bbae98cb54dde3ecc4bd2de610
author Mathieu Chartier <mathieuc@google.com> Thu Jan 28 23:00:23 2016 +0000
committer Gerrit Code Review <noreply-gerritcodereview@google.com> Thu Jan 28 23:00:23 2016 +0000
tree 11bc5c075bb2735d9e88d04f8827a3d3826684e2
parent fd071680f083831e3d93fb66cc34095dfad8c602
parent 784bb0915499d38c9bdca91bf6335fe0d503bc51

Merge "Clear image file in image writer"

compiler/image_writer.cc

diff --git a/compiler/image_writer.cc b/compiler/image_writer.cc
index c8720ea..6abc6fa 100644
--- a/compiler/image_writer.cc
+++ b/compiler/image_writer.cc
@@ -276,6 +276,11 @@
     if (image_fd != kInvalidFd) {
       if (strlen(image_filename) == 0u) {
         image_file.reset(new File(image_fd, unix_file::kCheckSafeUsage));
+        // Empty the file in case it already exists.
+        if (image_file != nullptr) {
+          TEMP_FAILURE_RETRY(image_file->SetLength(0));
+          TEMP_FAILURE_RETRY(image_file->Flush());
+        }
       } else {
         LOG(ERROR) << "image fd " << image_fd << " name " << image_filename;
       }