From 804543c6f89ee39e7eafbf79833e089543be19b2 Mon Sep 17 00:00:00 2001
From: Joe Taylor <k1jt@arrl.org>
Date: Wed, 28 Jun 2017 18:48:31 +0000
Subject: [PATCH] Protect against bounds error when nfa=0.

git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@7748 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
---
 lib/fsk4hf/sync8.f90 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/fsk4hf/sync8.f90 b/lib/fsk4hf/sync8.f90
index e6e0c2164..671e83648 100644
--- a/lib/fsk4hf/sync8.f90
+++ b/lib/fsk4hf/sync8.f90
@@ -39,7 +39,7 @@ subroutine sync8(iwave,nfa,nfb,nfqso,s,candidate,ncand)
   enddo
   savg=savg/NHSYM
 
-  ia=nint(nfa/df)
+  ia=max(1,nint(nfa/df))
   ib=nint(nfb/df)
   do i=ia,ib
      do j=-JZ,JZ