From fbdab3ec236aeed8d8e31535d998df556dd54943 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Sat, 10 May 2014 18:51:33 -0700
Subject: Add comment on why we enable stream exceptions

---
 examples/roundtrip/driver.cxx | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/examples/roundtrip/driver.cxx b/examples/roundtrip/driver.cxx
index 7c95538..b83988b 100644
--- a/examples/roundtrip/driver.cxx
+++ b/examples/roundtrip/driver.cxx
@@ -22,6 +22,9 @@ main (int argc, char* argv[])
 
   try
   {
+    // Enable stream exceptions so that io failures are reported
+    // as stream rather than as parsing exceptions.
+    //
     ifstream ifs;
     ifs.exceptions (ifstream::badbit | ifstream::failbit);
     ifs.open (argv[1], ifstream::in | ifstream::binary);
-- 
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