Make WeakKeyMap safe for compaction during allocation

During allocation, the table may not have been allocated yet which would
crash in the st_foreach.

1 files changed, 3 insertions, 1 deletions

diff --git a/weakmap.c b/weakmap.c
index 4e568e676b..641e530f58 100644
--- a/weakmap.c
+++ b/weakmap.c
@@ -609,7 +609,9 @@ wkmap_compact(void *ptr)
 {
     struct weakkeymap *w = ptr;
 
-    st_foreach_with_replace(w->table, wkmap_compact_table_i, wkmap_compact_table_replace, (st_data_t)0);
+    if (w->table) {
+        st_foreach_with_replace(w->table, wkmap_compact_table_i, wkmap_compact_table_replace, (st_data_t)0);
+    }
 }
 
 static const rb_data_type_t weakkeymap_type = {