Problem with free function in C for pointers

Question

I have two pointers and I want to fill the pointer somme with the values ​​contained in the pointer v.

This is method:

somme[0]=v[0] + v[1];
somme[1]=v[2] + v[3];
somme[2]=v[4] + v[5];

...

The error occurs when it performs the distruggi_vec(somme); function and not distruggi_vec(v);.

do you have any ideas? Thank you for your time.

This is my c code:

#include <stdlib.h>
#include <stdint.h>

extern uint32_t *crea_vec(size_t  n)
{
    uint32_t *p;
    p = malloc(n * sizeof(uint32_t));
    for (size_t i = 0; i < n; ++i)
    {
        p[i] = i;
    }

    return p;
}

uint32_t *somme_2a2(uint32_t *vett, size_t size) 
{
    if (size % 2 != 0) 
    {
        size = size - 1;
    }

    size_t j = 0;
    for (size_t i = 0; i < size; ++i) 
    {
        if (i >= 10) { goto a; }
        j = i * 2;
        vett[i] = vett[j] + vett[j + 1];
    }
    a:
    size = size / 2;
    vett = realloc(vett, size * sizeof(uint32_t));

    return vett;
}

extern void distruggi_vec(uint32_t *p)
{
    free(p);
}

int main(void) 
{
    size_t n = 20;
    uint32_t *v = crea_vec(n);
    uint32_t *somme = somme_2a2(v, n);
    distruggi_vec(v);
    distruggi_vec(somme);

    return 0;
}

when I debug my code it gives me this problem:

Answer 1

Thank you all for your time, this is the final solution of my problem without errors:

Code:

`

#include <stdlib.h>
#include <stdint.h>

extern uint32_t *crea_vec(size_t  n)
{
    uint32_t *p;
    p = malloc(n * sizeof(uint32_t));
    for (size_t i = 0; i < n; ++i)
    {
        p[i] = i;
    }

    return p;
}

uint32_t *somme_2a2(uint32_t *vett, size_t size) 
{
    uint32_t *vett2 = calloc(size/2, sizeof(uint32_t));
    if (size % 2 != 0) 
    {
        size = size - 1;
    }

    size_t j = 0;
    for (size_t i = 0; i < size; ++i) 
    {
        if (i >= 10) { break; }
        j = i * 2;
        vett[i] = vett[j] + vett[j + 1];
        vett2[i] = vett[i];
    }

    return vett2;
}

extern void distruggi_vec(uint32_t *p)
{
    free(p);
}

int main(void) 
{
    size_t n = 20;
    uint32_t *v = crea_vec(n);
    uint32_t *somme = somme_2a2(v, n);
    distruggi_vec(v);
    distruggi_vec(somme);

    return 0;
}

`