Avoid undefined results when the parameter is out of range.
This commit is contained in:
parent
914f79ba45
commit
22083b182a
1 changed files with 1 additions and 1 deletions
|
@ -304,7 +304,7 @@ int sk_num(const STACK *st)
|
|||
|
||||
char *sk_value(const STACK *st, int i)
|
||||
{
|
||||
if(st == NULL) return NULL;
|
||||
if(!st || (i < 0) || (i >= st->num)) return NULL;
|
||||
return st->data[i];
|
||||
}
|
||||
|
||||
|
|
Loading…
Reference in a new issue