[Request] [+ ] D10914: upgrade_utils: fix crash for removecldeltachain action

[Mathiasdm (Mathias De Maré)]

Mathiasdm created this revision.
Herald added a reviewer: hg-reviewers.
Herald added a subscriber: mercurial-patches.

REVISION SUMMARY
  This fixes issue6383.

REPOSITORY
  rHG Mercurial

BRANCH
  stable

REVISION DETAIL
  https://phab.mercurial-scm.org/D10914

AFFECTED FILES
  mercurial/upgrade_utils/actions.py

CHANGE DETAILS

diff --git a/mercurial/upgrade_utils/actions.py b/mercurial/upgrade_utils/actions.py
--- a/mercurial/upgrade_utils/actions.py
+++ b/mercurial/upgrade_utils/actions.py
@@ -642,7 +642,10 @@
     newactions = []
 
     for d in format_upgrades:
-        name = d._requirement
+        if util.safehasattr(d, '_requirement'):
+            name = d._requirement
+        else:
+            name = None
 
         # If the action is a requirement that doesn't show up in the
         # destination requirements, prune the action.



To: Mathiasdm, #hg-reviewers
Cc: mercurial-patches, mercurial-devel
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