segfault when updating with RC9

Hi,

Crash report sent for TSVN indicates a problem when updating:

In file subversion\libsvn_wc\update_editor.c, function merge_file(),
line 2505 the statement:
                 oldrev_str = apr_psprintf(pool, ".r%ld%s%s",
                                           entry->revision,
                                           *path_ext ? "." : "",
                                           *path_ext ? path_ext : "");
can access a NULL entry object.
 From what I can see in the code, entry can be well NULL (there are
checks for that before), but there can be situations where such a NULL
entry don't cause the function returning an error but continue to that line.

I don't know exactly what situation causes this though, the crash dump
doesn't tell that.

Stefan

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