Introduce macro variable for maximal output filename length

Signed-off-by: Christoph Niethammer <[email protected]>

Author: cniethammer

tst_output.c

@@ -77,7 +77,7 @@ tst_output_types tst_output_init(tst_output_stream * output, int rank,
     va_start(arglist, type);
     fname = va_arg (arglist, char *);
     sprintf (output->filename,"R%d_", tst_output_global_rank);
-    freelen = 255 - strlen(output->filename);
+    freelen = TST_OUTPUT_FILENAME_MAX - (1 + strlen(output->filename));
     strncat (output->filename, fname, freelen);
     va_end (arglist);
   }

tst_output.h

@@ -33,10 +33,11 @@ typedef enum {
 } tst_report_types;
 
 
+#define TST_OUTPUT_FILENAME_MAX 256
 typedef struct {
   FILE * streamptr;  /**< Pointer on the stream */
   tst_output_types type;
-  char filename[256];  /**< Filename if stream writes to file */
+  char filename[TST_OUTPUT_FILENAME_MAX];  /**< Filename if stream writes to file */
   tst_report_types level;
   int rank;    /**< MPI rank responsible for output */
   int isopen;  /**< open status: 1 if open */