vcs-svn: fix intermittent repo_tree corruption

Pointers to directory entries do not remain valid after a call to
dent_insert.

Noticed in the course of importing a small Subversion repository
(~1000 revs); after setting up a dirent for a certain path as a
placeholder, by luck dent_insert would trigger a realloc that
shifted around addresses, resulting in an import with that file
replaced by a directory.

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/vcs-svn/repo_tree.c b/vcs-svn/repo_tree.c
index e94d91d12966562e4cd43df9c34990dddc3465c3..e3d1fa35444dd693ab8723a030b9fc6265cad8bc 100644 (file)
--- a/vcs-svn/repo_tree.c
+++ b/vcs-svn/repo_tree.c
@@ -131,7 +131,7 @@ static void repo_write_dirent(uint32_t *path, uint32_t mode,
                if (dent == key) {
                        dent->mode = REPO_MODE_DIR;
                        dent->content_offset = 0;
-                       dent_insert(&dir->entries, dent);
+                       dent = dent_insert(&dir->entries, dent);
                }
 
                if (dent_offset(dent) < dent_pool.committed) {
@@ -142,7 +142,7 @@ static void repo_write_dirent(uint32_t *path, uint32_t mode,
                        dent->name_offset = name;
                        dent->mode = REPO_MODE_DIR;
                        dent->content_offset = dir_o;
-                       dent_insert(&dir->entries, dent);
+                       dent = dent_insert(&dir->entries, dent);
                }
 
                dir = repo_dir_from_dirent(dent);