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[PATCH 04/10] name-rev: don't leak path copy in name_ref()

From
René Scharfe <l.s.r@web.de>
Date
Feb 4, 2020, 21:17 UTC
Message-ID
<32a0a2d6-3237-24e9-c647-6624cc2a1e89@web.de>
In-Reply-To
<084909f8-fefa-1fe0-b2ce-74eff47c4972@web.de>

name_ref() duplicates the path string and passes it to name_rev(), which either puts it into a commit slab or ignores it if there is already a better name, leaking it. Move the duplication to name_rev() and release the copy in the latter case.

Signed-off-by: René Scharfe <l.s.r@web.de>
---
 builtin/name-rev.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/builtin/name-rev.c b/builtin/name-rev.c
index 2e6820bd5b..3e22a0503e 100644
--- a/builtin/name-rev.c
+++ b/builtin/name-rev.c
@@ -121,6 +121,8 @@ static void name_rev(struct commit *start_commit,

 	if (deref)
 		tip_name = to_free = xstrfmt("%s^0", tip_name);
+	else
+		tip_name = to_free = xstrdup(tip_name);

 	if (!create_or_update_name(start_commit, tip_name, taggerdate, 0, 0,
 				   from_tag)) {
@@ -323,7 +325,7 @@ static int name_ref(const char *path, const struct object_id *oid, int flags, vo
 		if (taggerdate == TIME_MAX)
 			taggerdate = commit->date;
 		path = name_ref_abbrev(path, can_abbreviate_output);
-		name_rev(commit, xstrdup(path), taggerdate, from_tag, deref);
+		name_rev(commit, path, taggerdate, from_tag, deref);
 	}
 	return 0;
 }
--
2.25.0
Previous: René ScharfeNext: Derrick Stolee
Message 9 of 27 in “name-rev: improve memory usage”
  1. 00/10 name-rev: improve memory usageRené Scharfe, Feb 4, 2020
  2. 01/10 name-rev: rewrite create_or_update_name()René Scharfe, Feb 4, 2020
  3. Derrick StoleeFeb 5, 2020
  4. Taylor BlauFeb 5, 2020
  5. Andrei RybakFeb 5, 2020
  6. René ScharfeFeb 5, 2020
  7. 02/10 name-rev: remove unused typedefRené Scharfe, Feb 4, 2020
  8. 03/10 name-rev: respect const qualifierRené Scharfe, Feb 4, 2020
  9. 04/10 name-rev: don't leak path copy in name_ref()René Scharfe, Feb 4, 2020
  10. Derrick StoleeFeb 5, 2020
  11. 05/10 name-rev: don't _peek() in create_or_update_name()René Scharfe, Feb 4, 2020
  12. 06/10 name-rev: put struct rev_name into commit slabRené Scharfe, Feb 4, 2020
  13. 07/10 name-rev: factor out get_parent_name()René Scharfe, Feb 4, 2020
  14. 08/10 name-rev: pre-size buffer in get_parent_name()René Scharfe, Feb 4, 2020
  15. Derrick StoleeFeb 5, 2020
  16. René ScharfeFeb 5, 2020
  17. 09/10 name-rev: generate name strings only if they are betterRené Scharfe, Feb 4, 2020
  18. Derrick StoleeFeb 5, 2020
  19. René ScharfeFeb 5, 2020
  20. 10/10 name-rev: release unused name stringsRené Scharfe, Feb 4, 2020
  21. Derrick StoleeFeb 5, 2020
  22. Derrick StoleeFeb 5, 2020
  23. Derrick StoleeFeb 5, 2020
  24. 01/10 name-rev: rewrite create_or_update_name()René Scharfe, Feb 5, 2020
  25. 11/10 name-rev: sort tip names before applyingRené Scharfe, Feb 5, 2020
  26. Junio C HamanoFeb 5, 2020
  27. René ScharfeFeb 5, 2020

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