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-rw-r--r--generic/tclOO.c23
1 files changed, 20 insertions, 3 deletions
diff --git a/generic/tclOO.c b/generic/tclOO.c
index 4697054..9df5029 100644
--- a/generic/tclOO.c
+++ b/generic/tclOO.c
@@ -898,10 +898,10 @@ ObjectRenamedTrace(
/*
* ----------------------------------------------------------------------
*
- * ReleaseClassContents --
+ * ClearMixins, ClearSuperclasses --
*
- * Tear down the special class data structure, including deleting all
- * dependent classes and objects.
+ * Utility functions for correctly clearing the list of mixins or
+ * superclasses of a class. Will ckfree() the list storage.
*
* ----------------------------------------------------------------------
*/
@@ -921,6 +921,7 @@ ClearMixins(
TclOORemoveFromMixinSubs(clsPtr, mixinPtr);
}
ckfree(clsPtr->mixins.list);
+ clsPtr->mixins.list = NULL;
clsPtr->mixins.num = 0;
}
@@ -939,8 +940,20 @@ ClearSuperclasses(
TclOORemoveFromSubclasses(clsPtr, superPtr);
}
ckfree(clsPtr->superclasses.list);
+ clsPtr->superclasses.list = NULL;
clsPtr->superclasses.num = 0;
}
+
+/*
+ * ----------------------------------------------------------------------
+ *
+ * ReleaseClassContents --
+ *
+ * Tear down the special class data structure, including deleting all
+ * dependent classes and objects.
+ *
+ * ----------------------------------------------------------------------
+ */
static void
ReleaseClassContents(
@@ -1231,6 +1244,10 @@ ObjectNamespaceDeleted(
oPtr->metadataPtr = NULL;
}
+ /*
+ * If this was a class, there's additional deletion work to do.
+ */
+
if (clsPtr != NULL) {
Tcl_ObjectMetadataType *metadataTypePtr;
ClientData value;