char *next= p->s;
int i;
+ if (!d)
+ return NULL;
+
/* number */
d->value = av_strtod(p->s, &next);
if(next != p->s){
static AVEvalExpr * new_eval_expr(int type, int value, AVEvalExpr *p0, AVEvalExpr *p1){
AVEvalExpr * e = av_mallocz(sizeof(AVEvalExpr));
+ if (!e)
+ return NULL;
e->type =type ;
e->value =value ;
e->param[0] =p0 ;
while(p->s[0]=='^'){
p->s++;
e= new_eval_expr(e_pow, 1, e, parse_pow(p, &sign2));
+ if (!e)
+ return NULL;
if (e->param[1]) e->param[1]->value *= (sign2|1);
}
if (e) e->value *= (sign|1);
while(p->s[0]=='*' || p->s[0]=='/'){
int c= *p->s++;
e= new_eval_expr(c == '*' ? e_mul : e_div, 1, e, parse_factor(p));
+ if (!e)
+ return NULL;
}
return e;
}
AVEvalExpr * e = parse_term(p);
while(*p->s == '+' || *p->s == '-') {
e= new_eval_expr(e_add, 1, e, parse_term(p));
+ if (!e)
+ return NULL;
};
return e;
while(*p->s == ';') {
p->s++;
e= new_eval_expr(e_last, 1, e, parse_subexpr(p));
+ if (!e)
+ return NULL;
};
p->stack_index++;