Disallow -skip values <= 0 for gmx trjconv.

Fixes #2467

Change-Id: Ic8b1892c454100bf4d5668b1c55b33ec6fbff4a2

diff --git a/src/gromacs/gmxana/gmx_trjconv.cpp b/src/gromacs/gmxana/gmx_trjconv.cpp
index f3b1bfdacce7a191afcaace621dc7043b4fd05ce..bbdf5aa04575b4e92bd3a34f3c6ea4d0ebd1e188 100644 (file)
--- a/src/gromacs/gmxana/gmx_trjconv.cpp
+++ b/src/gromacs/gmxana/gmx_trjconv.cpp
@@ -1080,6 +1080,7 @@ int gmx_trjconv(int argc, char *argv[])
         /* skipping */
         if (skip_nr <= 0)
         {
+            gmx_fatal(FARGS, "Argument for -skip (%d) needs to be greater or equal to 1.", skip_nr);
         }
 
         std::unique_ptr<gmx_mtop_t> mtop = read_mtop_for_tng(top_file, in_file, out_file);