From d0c8edd02dc6616a6953be09ad332f5381ad7dba Mon Sep 17 00:00:00 2001
From: curt <curt>
Date: Tue, 14 Jun 2005 17:53:40 +0000
Subject: [PATCH] Fix a misuse of a return value that lead to an error message
 being displayed when one shouldn't have been.

---
 src/FDM/ExternalPipe/ExternalPipe.cxx | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/FDM/ExternalPipe/ExternalPipe.cxx b/src/FDM/ExternalPipe/ExternalPipe.cxx
index a94525448..422023ed1 100644
--- a/src/FDM/ExternalPipe/ExternalPipe.cxx
+++ b/src/FDM/ExternalPipe/ExternalPipe.cxx
@@ -411,9 +411,9 @@ void FGExternalPipe::update_binary( double dt ) {
     length = sizeof(fdm);
     cout << "about to read fdm data from remote fdm." << endl;
     result = fread( (char *)(& fdm), length, 1, pd2 );
-    if ( result != length ) {
+    if ( result != 1 ) {
         SG_LOG( SG_IO, SG_ALERT, "Read error from named pipe: "
-                << fifo_name_2 );
+                << fifo_name_2 << " expected 1 item, but got " << result );
     } else {
         cout << "  read successful." << endl;
     }