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https://issues.apache.org/jira/browse/SVN-4840?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17019399#comment-17019399
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Julian Foad edited comment on SVN-4840 at 2/10/20 1:28 PM:
-----------------------------------------------------------
Good news: the location of the error is nailed down.
The specific reported failure mode was using valid inputs ("canonical"
rangelists) to svn_rangelist_merge2(). I can now
([r1872923|http://svn.apache.org/r1872923]) reproduce other similar failures of
that function using random-input testing, which I initially was unable to
reproduce.
Knowing the failure occurred with valid inputs to svn_rangelist_merge2(), there
no longer any reason to assume that the root cause is an error in higher-level
code. It is likely that the bug in svn_rangelist_merge2() is the root cause.
Other follow-up commits: r1872919, r1872921, r1872922, r1872923, r1872924,
r1873294
was (Author: julianfoad):
Good news: the location of the error is nailed down.
The specific reported failure mode was using valid inputs ("canonical"
rangelists) to svn_rangelist_merge2(). I can now
([r1872923|http://svn.apache.org/r1872923]) reproduce other similar failures of
that function using random-input testing, which I initially was unable to
reproduce.
Knowing the failure occurred with valid inputs to svn_rangelist_merge2(), there
no longer any reason to assume that the root cause is an error in higher-level
code. It is likely that the bug in svn_rangelist_merge2() is the root cause.
Other follow-up commits: r1872919, r1872921, r1872922, r1872924
> Merge assertion failure in svn_sort__array_insert
> -------------------------------------------------
>
> Key: SVN-4840
> URL: https://issues.apache.org/jira/browse/SVN-4840
> Project: Subversion
> Issue Type: Bug
> Affects Versions: trunk, 1.10.6
> Reporter: Julian Foad
> Priority: Major
>
> I am investigating an assertion failure. I received a stack trace without
> parameter values, from which I quote the relevant part:
>
> {code:java}
> #4 svn_sort__array_insert (array=?, new_element=?, insert_index=?)
> at subversion/libsvn_subr/sorts.c:310
> assert(0 <= insert_index && insert_index <= array->nelts);
> #5 svn_rangelist_merge2 (rangelist=?, chg=?,)
> at subversion/libsvn_subr/mergeinfo.c:1231
> svn_sort__array_insert(rangelist, &range_copy, i++);
> #6 svn_mergeinfo_merge2 (mergeinfo=?, changes=?,)
> at subversion/libsvn_subr/mergeinfo.c:1838
> #7 combine_forked_mergeinfo_props (...)
> at subversion/libsvn_wc/props.c:138
> #8 apply_single_mergeinfo_prop_change (...)
> at subversion/libsvn_wc/props.c:1087
> {code}
> This was reported in Subversion 1.10.4. I have reproduced with 1.10.6 and
> trunk@1871000.
>
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