use const char * for compatibility with std::string.c_str()

src/MPIIO/restart_mpiio.cpp

@@ -36,7 +36,7 @@ RestartMPIIO::RestartMPIIO(LAMMPS *lmp) : Pointers(lmp)
    for some file servers it is most efficient to only read or only write
 ------------------------------------------------------------------------- */
 
-void RestartMPIIO::openForRead(char *filename)
+void RestartMPIIO::openForRead(const char *filename)
 {
   int err = MPI_File_open(world, filename, MPI_MODE_RDONLY ,
                           MPI_INFO_NULL, &mpifh);
@@ -56,7 +56,7 @@ void RestartMPIIO::openForRead(char *filename)
    for some file servers it is most efficient to only read or only write
 ------------------------------------------------------------------------- */
 
-void RestartMPIIO::openForWrite(char *filename)
+void RestartMPIIO::openForWrite(const char *filename)
 {
   int err = MPI_File_open(world, filename, MPI_MODE_WRONLY,
                           MPI_INFO_NULL, &mpifh);

src/MPIIO/restart_mpiio.h

@@ -28,8 +28,8 @@ class RestartMPIIO  : protected Pointers {
 
   RestartMPIIO(class LAMMPS *);
   ~RestartMPIIO() {}
-  void openForRead(char *);
-  void openForWrite(char *);
+  void openForRead(const char *);
+  void openForWrite(const char *);
   void write(MPI_Offset, int, double *);
   void read(MPI_Offset, bigint, double *);
   void close();

src/RIGID/fix_rigid.cpp

@@ -2406,7 +2406,7 @@ void FixRigid::readfile(int which, double *vec,
    only proc 0 writes list of global bodies to file
 ------------------------------------------------------------------------- */
 
-void FixRigid::write_restart_file(char *file)
+void FixRigid::write_restart_file(const char *file)
 {
   if (me) return;
 

src/RIGID/fix_rigid.h

@@ -36,7 +36,7 @@ class FixRigid : public Fix {
   virtual void final_integrate();
   void initial_integrate_respa(int, int, int);
   void final_integrate_respa(int, int);
-  void write_restart_file(char *);
+  void write_restart_file(const char *);
   virtual double compute_scalar();
 
   double memory_usage();

src/RIGID/fix_rigid_small.cpp

@@ -2562,7 +2562,7 @@ void FixRigidSmall::readfile(int which, double **array, int *inbody)
    each proc contributes info for rigid bodies it owns
 ------------------------------------------------------------------------- */
 
-void FixRigidSmall::write_restart_file(char *file)
+void FixRigidSmall::write_restart_file(const char *file)
 {
   FILE *fp;
 

src/RIGID/fix_rigid_small.h

@@ -38,7 +38,7 @@ class FixRigidSmall : public Fix {
   virtual void final_integrate();
   void initial_integrate_respa(int, int, int);
   void final_integrate_respa(int, int);
-  void write_restart_file(char *);
+  void write_restart_file(const char *);
 
   void grow_arrays(int);
   void copy_arrays(int, int, int);

src/fix.h

@@ -137,7 +137,7 @@ class Fix : protected Pointers {
   virtual void end_of_step() {}
   virtual void post_run() {}
   virtual void write_restart(FILE *) {}
-  virtual void write_restart_file(char *) {}
+  virtual void write_restart_file(const char *) {}
   virtual void restart(char *) {}
 
   virtual void grow_arrays(int) {}

src/mpiio.h

@@ -38,8 +38,8 @@ class RestartMPIIO {
 
   RestartMPIIO(class LAMMPS *) {mpiio_exists = 0;}
   ~RestartMPIIO() {}
-  void openForRead(char *) {}
-  void openForWrite(char *) {}
+  void openForRead(const char *) {}
+  void openForWrite(const char *) {}
   void write(MPI_Offset,int,double *) {}
   void read(MPI_Offset,long,double *) {}
   void close() {}