691     Py_ssize_t num_marks;       /* Number of marks in the mark stack. */  member
1611     self->num_marks = 0;  in _Unpickler_New()
5138     if (self->num_marks < 1) {  in marker()
5144     mark = self->marks[--self->num_marks];  in marker()
5145     self->stack->mark_set = self->num_marks != 0;  in marker()
5146     self->stack->fence = self->num_marks ?  in marker()
5147             self->marks[self->num_marks - 1] : 0;  in marker()
6173     if (self->num_marks > 0 && self->marks[self->num_marks - 1] == len) {  in load_pop()
6174         self->num_marks--;  in load_pop()
6175         self->stack->mark_set = self->num_marks != 0;  in load_pop()
6176         self->stack->fence = self->num_marks ?  in load_pop()
6177                 self->marks[self->num_marks - 1] : 0;  in load_pop()
6803     if (self->num_marks >= self->marks_size) {  in load_mark()
6804         size_t alloc = ((size_t)self->num_marks << 1) + 20;  in load_mark()
6816     self->marks[self->num_marks++] = self->stack->fence = Py_SIZE(self->stack);  in load_mark()
6898     self->num_marks = 0;  in load()