D8046: copies: fix crash when copy source is not in graft base

[martinvonz (Martin von Zweigbergk)]

martinvonz created this revision.
Herald added a subscriber: mercurial-devel.
Herald added a reviewer: hg-reviewers.

REPOSITORY
  rHG Mercurial

BRANCH
  default

REVISION DETAIL
  https://phab.mercurial-scm.org/D8046

AFFECTED FILES
  mercurial/copies.py
  tests/test-shelve.t

CHANGE DETAILS

diff --git a/tests/test-shelve.t b/tests/test-shelve.t
--- a/tests/test-shelve.t
+++ b/tests/test-shelve.t
@@ -186,14 +186,9 @@
 
 the common case - no options or filenames
 
-  $ hg shelve 2>&1 | grep KeyError
-  KeyError: 'No such manifest entry.' (no-pure !)
-      raise KeyError (pure !)
-  KeyError (pure !)
-# Get out of the broken state so later tests work
-  $ hg forget b.rename/b c.copy ghost
-  $ hg revert a/a b/b d
-  $ rm a/a.orig b.rename/b c.copy
+  $ hg shelve
+  shelved as default-01
+  3 files updated, 0 files merged, 2 files removed, 0 files unresolved
   $ hg status -C
 
 ensure that our shelved changes exist
@@ -396,10 +391,10 @@
 #if phasebased
   $ hg heads -q --template '{rev}\n'
   8
-  6
+  5
   $ hg parents -q --template '{rev}\n'
   8
-  6
+  5
 #endif
 
 #if stripbased
diff --git a/mercurial/copies.py b/mercurial/copies.py
--- a/mercurial/copies.py
+++ b/mercurial/copies.py
@@ -527,6 +527,11 @@
         if src not in m1:
             # renamed on side 1, deleted on side 2
             renamedelete[src] = dsts1
+    elif src not in mb:
+        # Work around the "short-circuit to avoid issues with merge states"
+        # thing in pathcopies(): pathcopies(x, y) can return a copy where the
+        # destination doesn't exist in y.
+        pass
     elif m2[src] != mb[src]:
         if not _related(c2[src], base[src]):
             return



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Cc: mercurial-devel