fix the snprintf call for vtag ... it was using the wrong size -- kili

git-svn-id: svn://svn.oetiker.ch/rrdtool/branches/1.2/program@1021 a5681a0c-68f1-0310-ab6d-d61299d08faa

diff --git a/src/rrd_tool.c b/src/rrd_tool.c
index bb82c38..c987c91 100644 (file)
--- a/src/rrd_tool.c
+++ b/src/rrd_tool.c
@@ -689,8 +689,8 @@ int HandleInputLine(int argc, char **argv, FILE* out)
        char          **legend_v;
         int           enumds = 0;
         int           i;
-        char *vtag = NULL;
-        vtag = malloc( strlen(COL_DATA_TAG)+10);
+        size_t       vtag_s = strlen(COL_DATA_TAG) + 10; 
+        char         *vtag = malloc(vtag_s); 
        for ( i = 2; i < argc; i++){
                if (strcmp("--enumds", argv[i]) == 0)
                        enumds = 1;
@@ -724,9 +724,9 @@ int HandleInputLine(int argc, char **argv, FILE* out)
            for (j = 0; j < col_cnt; j++) {
              rrd_value_t newval = DNAN;
               if (enumds == 1)
-               snprintf(vtag,sizeof(vtag),"%s%lu", COL_DATA_TAG, j);
+               snprintf(vtag,vtag_s,"%s%lu", COL_DATA_TAG, j);
              else
-               snprintf(vtag,sizeof(vtag),"%s",COL_DATA_TAG);
+               snprintf(vtag,vtag_s,"%s",COL_DATA_TAG);
               
              newval = *ptr;
              if(isnan(newval)){