From d40ce2b825efcece1ec5ad8b84229d7b96f4be08 Mon Sep 17 00:00:00 2001
From: Rossen Apostolov <rossen@kth.se>
Date: Fri, 23 May 2014 13:48:19 +0200
Subject: [PATCH] Issue a warning for using gmx_rms -prev with large
 trajectories.

Refs #716.

Change-Id: I607d6a63259e0dd9de7c8c99e4917bbe9f37ff8e
---
 src/tools/gmx_rms.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/tools/gmx_rms.c b/src/tools/gmx_rms.c
index 628ed7f0e4..895bdb836e 100644
--- a/src/tools/gmx_rms.c
+++ b/src/tools/gmx_rms.c
@@ -322,6 +322,8 @@ int gmx_rms(int argc, char *argv[])
     bPrev = (prev > 0);
     if (bPrev)
     {
+        fprintf(stderr, "WARNING: using option -prev with large trajectories will\n"
+                        "         require a lot of memory and could lead to crashes\n");
         prev = abs(prev);
         if (freq != 1)
         {
-- 
2.22.0