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[PATCH v4 15/16] refs.c: remove fallback-to-main-store code get_submodule_ref_store()

From
Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Date
Aug 23, 2017, 12:37 UTC
Message-ID
<20170823123704.16518-16-pclouds@gmail.com>
In-Reply-To
<20170823123704.16518-1-pclouds@gmail.com>
At this state, there are three get_submodule_ref_store() callers:
 - for_each_remote_ref_submodule()
 - handle_revision_pseudo_opt()
 - resolve_gitlink_ref()

The first two deal explicitly with submodules (and we should never fall back to the main ref store as a result). They are only called from submodule.c:

 - find_first_merges()
 - submodule_needs_pushing()
 - push_submodule()

The last one, as its name implies, deals only with submodules too, and the "submodule" (path) argument must be a non-NULL, non-empty string.

So, this "if NULL or empty string" code block should never ever trigger. And it's wrong to fall back to the main ref store anyway. Delete it.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
---
 refs.c | 11 +++--------
 1 file changed, 3 insertions(+), 8 deletions(-)
diff --git a/refs.c b/refs.c
index 8c989ffec7..a0c5078901 100644
--- a/refs.c
+++ b/refs.c
@@ -1587,6 +1587,9 @@ struct ref_store *get_submodule_ref_store(const char *submodule)
 	char *to_free = NULL;
 	size_t len;
 
+	if (!submodule)
+		return NULL;
+
 	if (submodule) {
 		len = strlen(submodule);
 		while (len && is_dir_sep(submodule[len - 1]))
@@ -1595,14 +1598,6 @@ struct ref_store *get_submodule_ref_store(const char *submodule)
 			return NULL;
 	}
 
-	if (!submodule || !*submodule) {
-		/*
-		 * FIXME: This case is ideally not allowed. But that
-		 * can't happen until we clean up all the callers.
-		 */
-		return get_main_ref_store();
-	}
-
 	if (submodule[len])
 		/* We need to strip off one or more trailing slashes */
 		submodule = to_free = xmemdupz(submodule, len);
-- 
2.11.0.157.gd943d85
Previous: Stefan BellerNext: Michael Haggerty
Message 34 of 40 in “Fix git-gc losing objects in multi worktree”
  1. 00/16 Fix git-gc losing objects in multi worktreeNguyễn Thái Ngọc Duy, Aug 23, 2017
  2. 01/16 revision.h: new flag in struct rev_info wrt. worktree-related refsNguyễn Thái Ngọc Duy, Aug 23, 2017
  3. 02/16 refs.c: use is_dir_sep() in resolve_gitlink_ref()Nguyễn Thái Ngọc Duy, Aug 23, 2017
  4. Stefan BellerAug 23, 2017
  5. Duy NguyenSep 6, 2017
  6. Stefan BellerSep 6, 2017
  7. 03/16 revision.c: refactor add_index_objects_to_pending()Nguyễn Thái Ngọc Duy, Aug 23, 2017
  8. 04/16 revision.c: --indexed-objects add objects from all worktreesNguyễn Thái Ngọc Duy, Aug 23, 2017
  9. Stefan BellerAug 23, 2017
  10. 05/16 refs.c: refactor get_submodule_ref_store(), share common free blockNguyễn Thái Ngọc Duy, Aug 23, 2017
  11. Stefan BellerAug 23, 2017
  12. 06/16 refs: move submodule slash stripping code to get_submodule_ref_storeNguyễn Thái Ngọc Duy, Aug 23, 2017
  13. Michael HaggertySep 9, 2017
  14. 07/16 refs: add refs_head_ref()Nguyễn Thái Ngọc Duy, Aug 23, 2017
  15. Junio C HamanoAug 24, 2017
  16. Duy NguyenSep 6, 2017
  17. 08/16 revision.c: use refs_for_each*() instead of for_each_*_submodule()Nguyễn Thái Ngọc Duy, Aug 23, 2017
  18. Junio C HamanoAug 24, 2017
  19. 09/16 refs.c: move for_each_remote_ref_submodule() to submodule.cNguyễn Thái Ngọc Duy, Aug 23, 2017
  20. 10/16 refs: remove dead for_each_*_submodule()Nguyễn Thái Ngọc Duy, Aug 23, 2017
  21. Stefan BellerAug 23, 2017
  22. Michael HaggertySep 9, 2017
  23. 11/16 revision.c: --all adds HEAD from all worktreesNguyễn Thái Ngọc Duy, Aug 23, 2017
  24. Stefan BellerAug 23, 2017
  25. Duy NguyenSep 6, 2017
  26. Stefan BellerSep 6, 2017
  27. Michael HaggertySep 9, 2017
  28. 12/16 files-backend: make reflog iterator go through per-worktree reflogNguyễn Thái Ngọc Duy, Aug 23, 2017
  29. Richard MawAug 24, 2017
  30. Michael HaggertySep 9, 2017
  31. 13/16 revision.c: --reflog add HEAD reflog from all worktreesNguyễn Thái Ngọc Duy, Aug 23, 2017
  32. 14/16 rev-list: expose and document --single-worktreeNguyễn Thái Ngọc Duy, Aug 23, 2017
  33. Stefan BellerAug 23, 2017
  34. 15/16 refs.c: remove fallback-to-main-store code get_submodule_ref_store()Nguyễn Thái Ngọc Duy, Aug 23, 2017
  35. Michael HaggertySep 9, 2017
  36. 16/16 refs.c: reindent get_submodule_ref_store()Nguyễn Thái Ngọc Duy, Aug 23, 2017
  37. Michael HaggertySep 9, 2017
  38. Michael J GruberAug 25, 2017
  39. Duy NguyenSep 6, 2017
  40. Michael HaggertySep 9, 2017

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