svn 1.5.0 segfaults with ^/ externals

Hi,

Another crash report sent for TSVN: when setting an svn:external to
^/B extfolder
svn can segfault.
The script below shows how to reproduce this. It only works if the
repository is located directly on the server root (e.g.,
svn://localhost/), it works ok if the repository is at least one folder
below the server root.

Stefan

:: script starts here

@echo off
set ROOT=D:/Development/SVN/SVNTests
set SERVERROOT=D:\Development\SVN\SVNTests
set REPONAME=relextrepo
set WCNAME=relextwc
set REPO=svn://localhost:40000/
set WC=%ROOT%/%WCNAME%

cd %ROOT%
if exist %SERVERROOT%\%REPONAME% rd /s /q %SERVERROOT%\%REPONAME%
if exist %WCNAME% rd /s /q %WCNAME%

mkdir %SERVERROOT%\%REPONAME%
svnadmin create %SERVERROOT%\%REPONAME%
rem Allow anonymous access
echo [general]> %SERVERROOT%\%REPONAME%\conf\svnserve.conf
echo anon-access = write>> %SERVERROOT%\%REPONAME%\conf\svnserve.conf

rem Launch svnserve for current directory at port 40000
start svnserve.exe --daemon --foreground --root %SERVERROOT%\%REPONAME%
--listen-port 40000 --listen-host localhost
pause
svn mkdir %REPO%/A -m ""
svn mkdir %REPO%/B -m ""
svn co %REPO%/A %WCNAME%

svn propset svn:externals "^/B extfolder" %WCNAME%
svn ci %WCNAME% -m ""
:: now an update will segfault
svn update %WCNAME%

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