diff --git a/src/rrd_rpncalc.h b/src/rrd_rpncalc.h
index 61b89407b160a9e632a938ba28bd44b0cfac4a86..ab990b2204bd1e61024a150495552ea23a5125e8 100644 (file)
--- a/src/rrd_rpncalc.h
+++ b/src/rrd_rpncalc.h
#define DEF_NAM_FMT "%255[-_A-Za-z0-9]"
/* limit imposed by sizeof(rpn_cdefs_t) and rrd.ds_def.par */
-#define DS_CDEF_MAX_RPN_NODES 26
+#define DS_CDEF_MAX_RPN_NODES (int)(sizeof(unival)*10 / sizeof(rpn_cdefds_t))
typedef struct rpnstack_t {
double *s;