Merge remote-tracking branch 'gerrit/release-4-5-patches' into release-4-6

[alexxy/gromacs.git] / src / tools / gmx_msd.c

diff --git a/src/tools/gmx_msd.c b/src/tools/gmx_msd.c
index a529b1f3b00b360ed403b09bf9e7c4304e8cc4dc..c536fb845b7baed6c25b0af076ef2133352f6a36 100644 (file)
--- a/src/tools/gmx_msd.c
+++ b/src/tools/gmx_msd.c
@@ -400,6 +400,10 @@ static void prep_data(gmx_bool bMol,int gnx,atom_id index[],
 
         for(m=DIM-1; m>=0; m--) 
         {
+            if (hbox[m] == 0)
+            {
+                continue;
+            }
             while(xcur[ind][m]-xprev[ind][m] <= -hbox[m])
                 rvec_inc(xcur[ind],box[m]);
             while(xcur[ind][m]-xprev[ind][m] >  hbox[m])