svn_client_commit3() endless loop with memory leak

Hi,

With the very latest build of the libraries from the 1.4.x branch I
discovered an endless loop in svn_client_commit3(). To reproduce:

call svn_client_commit3() with two paths in the path list:
D:/tttt
D:/tttt/test.txt

Now, in libsvn_client/commit.c, line 1211:
   /* Condense the target list. */
   SVN_ERR(svn_path_condense_targets(&base_dir, &rel_targets, targets,
                                     recurse, pool));
base_dir gets the value "D:/tttt". Further down in line 1295ff:
           /* Now we need to iterate over the parent paths of this path
              adding them to the set of directories we want to lock. */
           svn_path_split(target, &parent_dir, &name, subpool);

           target = parent_dir;

           while (strcmp(target, base_dir))
             {
               if (target[0] == '/' && target[1] == '\0')
                 abort();

               APR_ARRAY_PUSH(dirs_to_lock,
                              const char *) = apr_pstrdup(pool, target);
               target = svn_path_dirname(target, subpool);
             }

is where the endless loop happens. The 'parent_dir' variable gets
initialized to "D:" in svn_path_split(...). Then, in the while loop,
targets becomes an empty string and the loop never finishes. But it
constantly allocates memory until the system runs out of memory.

Stefan

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