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diff --git a/contrib/reghunt/bin/gcc-svn-update b/contrib/reghunt/bin/gcc-svn-update
new file mode 100755
index 00000000..0f6aac86
--- /dev/null
+++ b/contrib/reghunt/bin/gcc-svn-update
@@ -0,0 +1,117 @@
+#! /bin/bash
+
+# Update or check out GCC sources for a particular Subversion revision
+# and a particular branch.
+#
+# Copyright (C) 2007 Free Software Foundation.
+#
+# This file is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# For a copy of the GNU General Public License, write the the
+# Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+# Boston, MA 02111-1301, USA.
+
+#set -ex
+
+if [ $# != 1 ]; then
+  echo Usage: $0 id
+  exit 1
+fi
+
+if [ "x${REG_DO_CLEANUPS}" != "x" ]; then
+  reg_cleanup
+fi
+
+ID=$1
+BRANCH=""
+
+########################################################################
+# Get sources.
+########################################################################
+
+svn_get() {
+  # In case there are problems with updates (there were with CVS),
+  # creating a file called REMOVE in the REG_SRCDIR directory causes us
+  # to start with a clean tree each time.
+
+  unset LC_ALL
+  unset LANG
+
+  cd ${REG_SRCDIR}
+  if [ -d gcc ]; then
+    # There's already a tree; do an update with the new revision.
+    cd gcc
+    echo "`date`  svn update begun for id ${ID}, rev ${REV}"
+    echo svn update --non-interactive --revision ${REV} >> $LOG
+    svn update --non-interactive --revision ${REV} >> $LOG
+    if [ $? -eq 0 ]; then
+      echo "`date`  svn update done"
+    else
+      echo "`date`  svn update failed"
+      exit 1
+    fi
+  else
+    echo "`date`  svn checkout begun for id ${ID}, rev ${REV}"
+    echo svn checkout --non-interactive --revision ${REV} \
+      ${REG_SVN_REPO}/${BRANCHPATH} gcc >> $LOG
+    svn checkout --non-interactive --revision ${REV} \
+      ${REG_SVN_REPO}/${BRANCHPATH} gcc >> $LOG
+    if [ $? -eq 0 ]; then
+      echo "`date`  svn checkout done"
+    else
+      echo "`date`  svn checkout failed"
+      exit 1
+    fi
+    cd gcc
+  fi
+
+  # Touch generated files.
+  contrib/gcc_update --touch >> $LOG
+}
+
+########################################################################
+# Main program
+########################################################################
+
+cd ${REG_SRCDIR}
+
+# This is a simple way to stop a long regression search fairly cleanly;
+# just touch a file called STOP.
+
+if [ -f STOP ]; then
+  echo "`date`  $0 detected STOP file"
+  rm -f STOP
+  exit 1
+fi
+
+# Set up the log file.
+REV=`${REG_IDS} -f index -t rev ${ID}`
+LOG=${REG_SRCDIR}/logs/${BUGID}/${REV}.log
+mkdir -p ${REG_SRCDIR}/logs/${BUGID}
+rm -f $LOG
+touch $LOG
+
+# Get the branch for this patch.
+BRANCH=`${REG_IDS} -f index -t branch ${ID}`
+if [ "${BRANCH}" = "error" ]; then
+  echo "`date`  $0: cannot determine the SVN branch for id ${ID}"
+  exit 1
+fi
+
+if [ "${BRANCH}" = "trunk" ]; then
+  BRANCHPATH=trunk
+else
+  BRANCHPATH=branches/${BRANCH}
+fi
+
+svn_get
+
+exit 0