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All of that stuff does not make much sense for me, that's why I was wondering wether you could give me some clues about all of this or not. Does the Doug Lea's implementation still exists in recent glibc versions, or...?

All of that stuff does not make much sense for me, that's why I was wondering wether you could give me some clues about all of this or not. Does the Doug Lea's implementation still exist in recent glibc versions, or...?

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

int n = 5;

int main(int argc, char** argv) {

        char* p;
        char* q;

        p = malloc(1024);
        q = malloc(1024);

        printf("real size = %d\n",*(((int*)p)-1) & 0xFFFFFFF8);

        if(argc >= 2) {
                strcpy(p, argv[1]);
        }

        free(q);
        printf("n = 0x%08X\n", n);
        free(p);

        return EXIT_SUCCESS;
}

 
I wish I could dump this structure in memory:


struct chunk {
        int prev_size;
        int size;
        struct chunk *fd;
        struct chunk *bk;
};

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

int n = 5;

int main(int argc, char** argv) {

        char* p;
        char* q;

        p = malloc(1024);
        q = malloc(1024);

        printf("real size = %d\n",*(((int*)p)-1) & 0xFFFFFFF8);

        if(argc >= 2) {
                strcpy(p, argv[1]);
        }

        free(q);
        printf("n = 0x%08X\n", n);
        free(p);

        return EXIT_SUCCESS;
}

I would like to dump this structure in memory:

struct chunk {
        int prev_size;
        int size;
        struct chunk *fd;
        struct chunk *bk;
};