After several days searching why my code refactoring to remove globals was crashing,

After several days searching why my code refactoring to remove globals was crashing,
I found the problem it was because CValue stack variables have rubish as it inital values
and assigning to a member that is smaller than the big union item and trying to
recover it later as a different member gives bak garbage.

ST_FUNC void vset(TCCState* tcc_state, CType *type, int r, int v)
{
    CValue cval;
    memset(&cval, 0, sizeof(CValue));

    cval.i = v; //,<<<<<<<<<<< here is the main bug that mix with garbage
    vsetc(tcc_state, type, r, &cval);
}

/* store a value or an expression directly in global data or in local array */
static void init_putv(TCCState* tcc_state, CType *type, Section *sec, unsigned long c,
                      int v, int expr_type)
{
...
        case VT_PTR:
            if (tcc_state->tccgen_vtop->r & VT_SYM) {
                greloc(tcc_state, sec, tcc_state->tccgen_vtop->sym, c, R_DATA_PTR);
            }

//<<< on the next line is where we try to get the assigned value to cvalue.i as cvalue.ull

            *(addr_t *)ptr |= (tcc_state->tccgen_vtop->c.ull & bit_mask) << bit_pos;
            break;

Also this patch makes vla tests pass on linux 32 bits