test_free_recur

#include <stdlib.h>
#include <string.h>
#include <stdio.h>

struct s1
{
    int a;
    float b;
    char* name;
    struct s2* s2;
    void (*init)(struct s1*);
    void (*free)(struct s1*);
};

struct s2
{
    short c;
    double d;
    char* desc;
    struct s1* s1;
    void (*init)(struct s2*);
    void (*free)(struct s2*);
};

void s1_free(struct s1* s1)
{
    if(s1==NULL) return;
    printf("s1_free\n");
    s1->a=0;
    s1->b=0.0;
    free(s1->name);
    struct s2* s2=s1->s2;
    s1->s2=NULL;
    s1->init=NULL;
    s1->free=NULL;
    if(s2!=NULL) if(s2->free!=NULL) s2->free(s2);
}

void s2_free(struct s2* s2)
{
    if(s2==NULL) return;
    printf("s2_free\n");
    s2->c=0;
    s2->d=0.0;
    free(s2->desc);
    struct s1* s1=s2->s1;
    s2->s1=NULL;
    s2->init=NULL;
    s2->free=NULL;
    if(s1!=NULL) if(s1->free!=NULL) s1->free(s1);
}

int main(int argc, char* argv[])
{
    struct s1 s1;

    s1.a=5;
    s1.b=3.14;
    s1.name=strdup("coucou");
    s1.free=s1_free;

    struct s2 s2;

    s2.desc=strdup("Hello World!");
    s2.free=s2_free;

    s1.s2=&s2;
    s2.s1=&s1;

    if(s1.free!=NULL) s1.free(&s1);
    if(s2.free!=NULL) s2.free(&s2);
    return EXIT_SUCCESS;
}
//