From b4a0807c40e4d6352c50957e3a19642094c594b1 Mon Sep 17 00:00:00 2001
From: Bernd Machenschalk <bernd.machenschalk@ligo.org>
Date: Tue, 26 Jul 2016 13:36:48 +0200
Subject: [PATCH] BOINC GAHP: append to an existing stderr file instead of
 overwriting it

---
 samples/condor/boinc_gahp.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/samples/condor/boinc_gahp.cpp b/samples/condor/boinc_gahp.cpp
index d499944d21..df02c04623 100644
--- a/samples/condor/boinc_gahp.cpp
+++ b/samples/condor/boinc_gahp.cpp
@@ -459,7 +459,7 @@ void handle_fetch_output(COMMAND& c) {
         } else {
             sprintf(path, "%s/%s", req.dir, req.stderr_filename.c_str());
         }
-        FILE* f = fopen(path, "w");
+        FILE* f = fopen(path, "a");
         if (!f) {
             sprintf(buf, "can't\\ open\\ stderr\\ output\\ file\\ %s ", path);
             s = string(buf);