Cast to mrb_int to silence a warning; fix
@@ -2199,7 +2199,7 @@ codegen(codegen_scope *s, node *tree, int val)
char buf[32];
int sym;
- snprintf(buf, sizeof(buf), "$%" PRId64, (intptr_t)tree);
+ snprintf(buf, sizeof(buf), "$%" MRB_PRId, (mrb_int)(intptr_t)tree);
sym = new_sym(s, mrb_intern_cstr(mrb, buf));
genop(s, MKOP_ABx(OP_GETGLOBAL, cursp(), sym));
push();
