Each one by itself.
test wm-forget-1.1 is the same on the trunk, and doesn't crash there.
Some incompleteness or error in backporting?
% toplevel .parent
% toplevel .parent.child
% wm forget .parent.child
/bin/sh: line 1: 65050 Segmentation fault ./wish
this is all testing the 8.5 branch
Committing fix to core-8-5-branch.
Review and testing appreciated.
Changes committed to trunk too.
Fresh checkout of trunk and core-8-5-branch shows no crash in the test code in the comments: looks good. Thanks for the commits.