Well, on a 32bit machine, it is 3x larger... 
struct tree
{
    int elem;
    struct tree *left, *right;
};

int main(int argc, char **argv)
{
    printf("sizeof(int)=%d,sizeof(struct tree)=%d\n",
            sizeof(int),sizeof(struct tree));
}

[download]
...of course, the 12 bytes from above is a tad bit slimmer than the apparently 112 byte structure on the perl side.

In reply to Re^7: Perl memory usage by Anonymous Monk
in thread Performance, Abstraction and HOP by pg

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