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[PATCH 09/11] ref_transaction_delete(): check that old_sha1 is not null_sha1

From
Michael Haggerty <mhagger@alum.mit.edu>
Date
Feb 8, 2015, 16:14 UTC
Message-ID
<1423412045-15616-10-git-send-email-mhagger@alum.mit.edu>
In-Reply-To
<1423412045-15616-1-git-send-email-mhagger@alum.mit.edu>

It makes no sense to delete a reference that is already known not to exist.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
---
 refs.c | 2 ++
 1 file changed, 2 insertions(+)
diff --git a/refs.c b/refs.c
index 8ab1f8e..85815d7 100644
--- a/refs.c
+++ b/refs.c
@@ -3703,6 +3703,8 @@ int ref_transaction_delete(struct ref_transaction *transaction,
 			   int flags, const char *msg,
 			   struct strbuf *err)
 {
+	if (old_sha1 && is_null_sha1(old_sha1))
+		die("BUG: delete called with old_sha1 set to zeros");
 	return ref_transaction_update(transaction, refname,
 				      null_sha1, old_sha1,
 				      flags, msg, err);
-- 
2.1.4
Previous: Stefan BellerNext: Stefan Beller
Message 24 of 35 in “Allow reference values to be checked in a transaction”
  1. 00/11 Allow reference values to be checked in a transactionMichael Haggerty, Feb 8, 2015
  2. 01/11 refs: move REF_DELETING to refs.cMichael Haggerty, Feb 8, 2015
  3. Stefan BellerFeb 9, 2015
  4. 02/11 refs: remove the gap in the REF_* constant valuesMichael Haggerty, Feb 8, 2015
  5. Stefan BellerFeb 9, 2015
  6. 03/11 struct ref_update: move "have_old" into "flags"Michael Haggerty, Feb 8, 2015
  7. 04/11 ref_transaction_update(): remove "have_old" parameterMichael Haggerty, Feb 8, 2015
  8. Stefan BellerFeb 9, 2015
  9. Michael HaggertyFeb 11, 2015
  10. 05/11 ref_transaction_delete(): remove "have_old" parameterMichael Haggerty, Feb 8, 2015
  11. Stefan BellerFeb 9, 2015
  12. 06/11 commit: add tests of commit racesMichael Haggerty, Feb 8, 2015
  13. Stefan BellerFeb 9, 2015
  14. Junio C HamanoFeb 10, 2015
  15. Michael HaggertyFeb 11, 2015
  16. Junio C HamanoFeb 11, 2015
  17. Stefan BellerFeb 11, 2015
  18. Junio C HamanoFeb 11, 2015
  19. 07/11 commit: avoid race when creating orphan commitsMichael Haggerty, Feb 8, 2015
  20. Stefan BellerFeb 9, 2015
  21. Michael HaggertyFeb 11, 2015
  22. 08/11 ref_transaction_create(): check that new_sha1 is validMichael Haggerty, Feb 8, 2015
  23. Stefan BellerFeb 9, 2015
  24. 09/11 ref_transaction_delete(): check that old_sha1 is not null_sha1Michael Haggerty, Feb 8, 2015
  25. Stefan BellerFeb 9, 2015
  26. 10/11 ref_transaction_verify(): new function to check a reference's valueMichael Haggerty, Feb 8, 2015
  27. Stefan BellerFeb 9, 2015
  28. Michael HaggertyFeb 11, 2015
  29. 11/11 update_ref(): improve documentationMichael Haggerty, Feb 8, 2015
  30. Stefan BellerFeb 9, 2015
  31. Junio C HamanoFeb 9, 2015
  32. Stefan BellerFeb 9, 2015
  33. Michael HaggertyFeb 9, 2015
  34. Stefan BellerFeb 9, 2015
  35. Junio C HamanoFeb 9, 2015

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