Fix bug in list insertion:

The output iterator has its previous field incorrect.
2023-08-13 23:27:12 +02:00
1 parent 8f141896ba
commit 589abda0c2
@@ -503,6 +503,7 @@
    }                                                                         \
    /* Update insertion_point to this element */                              \
    insertion_point->current = next;                                          \
+    insertion_point->previous = current;                                      \
    M_L1ST_CONTRACT(list);                                                    \
  }                                                                           \
                                                                              \