Re: Failed to find label 'NULL' for URL

On Mon, 12 Feb 2007, Graham Leggett wrote:

> I have a RHEL4 svn client attempting to do an svn update against a Solaris
> svn server. When this is attempted, I get the message:
>
> svn: Failed to find label 'NULL' for URL '/repos/fo/sba/trunk/SBA/SbaAlchemy'
>
> The error messages fails to say which URL is affected, the message is
> thrown whenever any attempt is made by the RHEL4 machine to update or
> checkout code from the Solaris machine.

This error is produced by subversion/libsvn_ra_dav/props.c's
svn_ra_dav__get_props_resource():

--- snip ---
  SVN_ERR(svn_ra_dav__get_props(&props, sess, url_path, SVN_RA_DAV__DEPTH_ZERO,
                                label, which_props, pool));
  ...
      /* pick out the first response: the URL requested will not match
       * the response href. */
      apr_hash_index_t *hi = apr_hash_first(pool, props);

      if (hi)
        {
          void *ent;
          apr_hash_this(hi, NULL, NULL, &ent);
          *rsrc = ent;
        }
      else
        *rsrc = NULL;
  ...
  if (*rsrc == NULL)
    {
      /* ### hmmm, should have been in there... */
      return svn_error_createf(APR_EGENERAL, NULL,
                               _("Failed to find label '%s' for URL '%s'"),
                               label ? label : "NULL", url_path);
    }
--- snip ---

svn_ra_dav__get_props() must be returning an empty property hash. It
creates and dispatches a sub-request (PROPFIND) to httpd to retrieve
the properties requested from svn_ra_dav__get_props_resource() (via
its which_props parameter).