avoid segmentation fault, when creating a LAMMPS instance from the library interface. arg[] may be NULL.

2016-11-10 13:28:32 -05:00
parent 352e177fcd
commit 2b75ee761d
1 changed files with 2 additions and 1 deletions
--- a/src/lammps.cpp
+++ b/src/lammps.cpp
@ -89,7 +89,8 @@ LAMMPS::LAMMPS(int narg, char **arg, MPI_Comm communicator)

  suffix = suffix2 = NULL;
  suffix_enable = 0;
-  exename = arg[0];
+  if (arg) exename = arg[0];
+  else exename = (const char *)"(LAMMPS)";
  packargs = NULL;
  num_package = 0;
  char *rfile = NULL;