1 files changed, 5 insertions, 2 deletions
diff --git a/lib/Support/raw_ostream.cpp b/lib/Support/raw_ostream.cpp
index ac118a91a3..71a2ac5e09 100644
--- a/lib/Support/raw_ostream.cpp
+++ b/lib/Support/raw_ostream.cpp
@@ -377,14 +377,17 @@ raw_fd_ostream::raw_fd_ostream(const char *Filename, std::string &ErrorInfo,
 
   ErrorInfo.clear();
 
-  // Handle "-" as stdout.
+  // Handle "-" as stdout. Note that when we do this, we consider ourself
+  // the owner of stdout. This means that we can do things like close the
+  // file descriptor when we're done and set the "binary" flag globally.
   if (Filename[0] == '-' && Filename[1] == 0) {
     FD = STDOUT_FILENO;
     // If user requested binary then put stdout into binary mode if
     // possible.
     if (Flags & F_Binary)
       sys::Program::ChangeStdoutToBinary();
-    ShouldClose = false;
+    // Close stdout when we're done, to detect any output errors.
+    ShouldClose = true;
     return;
   }