Query about running a program through valgrind and getting false results comparing to other systems.
- by FILIaS
Yesterday i posted this: What's the problem with this code? [hashtable in C] and paxdiablo offered to help me. He posted a sample of code and asked me to run it through valgrind on my machine. This code normally generates: 12,4 But on my machine, i get 24,8. The doubled! I'm just curious why is that happening. Hope sb has a good explaination.
I post also paxdiablo's code (for anyone who cant find it.)
#include <stdio.h>
#include <stdlib.h>
typedef struct HashTable {
int size ;
struct List *head;
struct List *tail;
} HashTable;
typedef struct List {
char *number;
char *name;
int time;
struct List *next;
} List;
#define size_of_table 211
HashTable *createHashTable(void) {
HashTable *new_table = malloc(sizeof(*new_table)*size_of_table); //line 606
printf ("%d\n", sizeof(*new_table));
printf ("%d\n", sizeof(new_table));
if (new_table == NULL) {
return NULL;
}
int i=0;
for(i; i<size_of_table; i++) {
new_table[i].size=0;
new_table[i].head=NULL;
new_table[i].tail=NULL;
}
return new_table;
}
int main(void) {
HashTable *x = createHashTable();
free (x);
return 0;
}
