673     Py_ssize_t num_marks;       /* Number of marks in the mark stack. */  member
1479     self->num_marks = 0;  in _Unpickler_New()
4742     if (self->num_marks < 1) {  in marker()
4748     mark = self->marks[--self->num_marks];  in marker()
4749     self->stack->mark_set = self->num_marks != 0;  in marker()
4750     self->stack->fence = self->num_marks ?  in marker()
4751             self->marks[self->num_marks - 1] : 0;  in marker()
5681     if (self->num_marks > 0 && self->marks[self->num_marks - 1] == len) {  in load_pop()
5682         self->num_marks--;  in load_pop()
5683         self->stack->mark_set = self->num_marks != 0;  in load_pop()
5684         self->stack->fence = self->num_marks ?  in load_pop()
5685                 self->marks[self->num_marks - 1] : 0;  in load_pop()
6294     if ((self->num_marks + 1) >= self->marks_size) {  in load_mark()
6298         alloc = ((size_t)self->num_marks << 1) + 20;  in load_mark()
6300             alloc <= ((size_t)self->num_marks + 1)) {  in load_mark()
6317     self->marks[self->num_marks++] = self->stack->fence = Py_SIZE(self->stack);  in load_mark()
6399     self->num_marks = 0;  in load()