On Mon, May 18, 2009 at 12:56 PM, Stefan Küng <tortoisesvn_at_gmail.com> wrote:
> Hi,
>
> Crash report sent for TSVN:
>
> A segfault in subversion\libsvn_client\merge.c, function
> remove_noop_merge_ranges(), line 5022.
>
> It seems that APR_ARRAY_IDX() return NULL (the changed_revs->nelts is
> 0). But the 'ranges->nelts' in the for-loop above it has a value of two.
>
> This is a merge with:
>
> svn_client_merge_peg3(https://url/to/file,
> revrange 1-HEAD,
> HEAD,
> path/to/wc/file/in/other/branch,
> infinity,
> TRUE,
> FALSE,
> FALSE,
> FALSE,
> "",
> &ctx, pool);
Hi Stefan,
Something is odd about this report. You indicate the merge is with
--ignore-ancestry (6th argument to svn_client_merge_peg3). This means
that merge.c:do_file_merge, the only caller of
remove_noop_merge_ranges, will set its local variable REMAINING_RANGES
to a single element array:
range.start = revision1;
range.end = revision2;
range.inheritable = TRUE;
if (honor_mergeinfo)
{
### --ignore-ancestry means we aren't honoring mergeinfo so we
never enter this block
}
/* The simple cases where our remaining range is REVISION1:REVISION2. */
if (!honor_mergeinfo || merge_b->record_only)
{
remaining_ranges = apr_array_make(pool, 1, sizeof(&range));
APR_ARRAY_PUSH(remaining_ranges, svn_merge_range_t *) = ⦥
}
Which in turn means that remove_noop_merge_ranges can never be called:
if (!merge_b->record_only)
{
apr_array_header_t *ranges_to_merge = remaining_ranges;
/* If we have ancestrally related sources and more than one
range to merge, eliminate no-op ranges before going through
the effort of downloading the many copies of the file
required to do these merges (two copies per range). */
if (merge_b->sources_ancestral && (remaining_ranges->nelts > 1))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
{
const char *old_sess_url = NULL;
SVN_ERR(svn_client__ensure_ra_session_url(&old_sess_url,
merge_b->ra_session1,
primary_url, subpool));
SVN_ERR(remove_noop_merge_ranges(&ranges_to_merge,
merge_b->ra_session1,
remaining_ranges, subpool));
Also, line 5022 in
http://svn.collab.net/repos/svn/tags/1.6.2/subversion/libsvn_client/merge.c
is:
5022 if ((! SVN_IS_VALID_REVNUM(oldest_rev)) || (min_rev < oldest_rev))
Paul
------------------------------------------------------
http://subversion.tigris.org/ds/viewMessage.do?dsForumId=462&dsMessageId=2303460
Received on 2009-05-18 23:03:26 CEST