Fix the 'possible loss of data' 32-bit VC warning

1 files changed, 1 insertions, 1 deletions

diff --git a/tests/fdstream/driver.cxx b/tests/fdstream/driver.cxx
index 4a85526..58b7012 100644
--- a/tests/fdstream/driver.cxx
+++ b/tests/fdstream/driver.cxx
@@ -481,7 +481,7 @@ main (int argc, const char* argv[])
           assert (nd.first == 1 && nd.second == 0 && rds[0].ready);
 
           for (streamsize n; (n = is.readsome (buf, sizeof (buf))) != 0; )
-            r.append (buf, n);
+            r.append (buf, static_cast<size_t> (n));
         }
 
         is.close ();