gistfile1.txt

(gdb) list
5	static mp_int mag_32bit_limit;
6	
7	/* Forces a bigint to actually be a bigint, rather than a smallbigint. */
8	inline void force_bigint(void *data) {
9	    mp_int *i = &((MVMP6bigintBody *)data)->i;
10	    if (IS_SBI(data)) {
11	        printf("making a big integer in force_bigint: %d\n", VALUE_SBI(data));
12	        MVMint64 value = VALUE_SBI(data);
13	        mp_init(i);
14	        mp_zero(i);
(gdb) si
0x00007ffff7c44250	10	    if (IS_SBI(data)) {
(gdb) 
22	        printf("forcing a bigint into a bigint.\n");
(gdb) print *(MVMP6bigint *)data
$4 = {common = {header = {owner = 0, flags = 0, size = 56, forwarder = 0x0, sc = 0x0}, 
    st = 0x7ffff7302738}, {body = {i = {used = 0, alloc = 0, sign = 0, dp = 0x1}}, smallbig = {
      pad1 = 0, pad2 = 0, storage = 0, flag = 1}}}
(gdb) 

gistfile2.txt

#define MAKE_SBI(a) ((((MVMP6smallbigintBody *)a)->flag) = 1)
#define IS_SBI(a) ((long)(((MVMP6smallbigintBody *)a)->flag) == 1)
#define STORE_SBI(a, value) (((MVMP6smallbigintBody *)a)->storage = value)
#define VALUE_SBI(a) (((MVMP6smallbigintBody *)a)->storage)