git-svn-id: svn://svn.icms.temple.edu/lammps-ro/trunk@10804 f3b2605a-c512-4ea7-a41b-209d697bcdaa

src/fix_ave_spatial.cpp

@@ -17,6 +17,7 @@
 
 #include "stdlib.h"
 #include "string.h"
+#include "unistd.h"
 #include "fix_ave_spatial.h"
 #include "atom.h"
 #include "update.h"
@@ -824,6 +825,10 @@ void FixAveSpatial::end_of_step()
       }
 
     fflush(fp);
+    if (overwrite) {
+      long fileend = ftell(fp);
+      ftruncate(fileno(fp),fileend);
+    }
   }
 }