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Merge branch 'ps/do-not-trust-commit-graph-blindly-for-existence'

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The codepath to traverse the commit-graph learned to notice that a
commit is missing (e.g., corrupt repository lost an object), even
though it knows something about the commit (like its parents) from
what is in commit-graph.

* ps/do-not-trust-commit-graph-blindly-for-existence:
  commit: detect commits that exist in commit-graph but not in the ODB
  commit-graph: introduce envvar to disable commit existence checks
This commit is contained in:
Junio C Hamano
2023-11-08 11:03:59 +09:00
parent 234037dbec 7a5d604443
commit 42b87f7ee6
5 changed files with 84 additions and 2 deletions
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6
commit-graph.h
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@ -8,6 +8,12 @@
#define GIT_TEST_COMMIT_GRAPH_DIE_ON_PARSE "GIT_TEST_COMMIT_GRAPH_DIE_ON_PARSE"
#define GIT_TEST_COMMIT_GRAPH_CHANGED_PATHS "GIT_TEST_COMMIT_GRAPH_CHANGED_PATHS"
/*
* This environment variable controls whether commits looked up via the
* commit graph will be double checked to exist in the object database.
*/
#define GIT_COMMIT_GRAPH_PARANOIA "GIT_COMMIT_GRAPH_PARANOIA"
/*
* This method is only used to enhance coverage of the commit-graph
* feature in the test suite with the GIT_TEST_COMMIT_GRAPH and