diff --git a/src/rrd_rpncalc.c b/src/rrd_rpncalc.c
index 75d82eec2725a1935d61ce953f0b60ecd8468df7..68e3f0cb9327e888745ee94fdb87ebcd3ad6ca51 100644 (file)
--- a/src/rrd_rpncalc.c
+++ b/src/rrd_rpncalc.c
* lookup(): a function that retrieves a numeric key given a variable name
*/
rpnp_t *
-rpn_parse(void *key_hash,char *expr,long (*lookup)(void *,char*)){
+rpn_parse(void *key_hash,const char *const expr_const,long (*lookup)(void *,char*)){
int pos=0;
+ char *expr;
long steps=-1;
rpnp_t *rpnp;
char vname[30];
rpnp=NULL;
+ expr=(char *)expr_const;
while(*expr){
if ((rpnp = (rpnp_t *) rrd_realloc(rpnp, (++steps + 2)*