Svn API problem

#include "svn_client.h"
#include "svn_cmdline.h"
#include "svn_pools.h"

int main(int, char *[])
{
  svn_error_t *err = 0;

  //  Init subversion.
  svn_cmdline_init( "test", stderr );
  //  Crete memory pool for all ARP operations.
  apr_pool_t *pool = svn_pool_create( 0 );

  //  Create subversion context for operations.
  svn_client_ctx_t* ctx = 0;
  err = svn_client_create_context( & ctx, pool );

  //  Load the run-time config file into context.
  err = svn_config_get_config( & ctx->config, 0, pool );

  //  Get configuration back from context.
  svn_config_t *config = (svn_config_t*)apr_hash_get
  (
    ctx->config,
    SVN_CONFIG_CATEGORY_CONFIG,
    APR_HASH_KEY_STRING
  );

  err = svn_cmdline_create_auth_baton
  (
    & ctx->auth_baton,
    //  non-interactive
    TRUE,
    //  username
    "username",
    //  password
    "password",
    //  dir to read config from
    "",
    //  no auth cache
    TRUE,
    //  trust server certificate
    TRUE,
    //  config
    config,
    //  cancel function, |svn_cancel_func_t|
    0,
    //  cancel baton, |void*|
    0,
    //  pool
    pool
  );


  svn_opt_revision_t revision;
  revision.kind = svn_opt_revision_head;
  apr_hash_t* results = 0;

  //  First test: issue subversion "ls" command.
  err = svn_client_ls
  (
    & results,
    //  Give non-existant URL intentionaly to get error.
    "http://wrong.url",
    & revision,
    //  Recursion.
    FALSE,
    ctx,
    pool
  );

  //  This will correctly display "Could not resolve hostname 'wrong.url'".
  if( err )
  {
    svn_handle_error2( err, stderr, 0, "ls: " );
  }

  apr_array_header_t* poPaths = apr_array_make( pool, 0, sizeof( char* ) );
  //  Give non-existing path to get error.
  const char* pPath = apr_pstrdup( pool, "wrong path" );
  *(const char**)apr_array_push( poPaths ) = pPath;

  //  Second test: issue subversion "up" command.
  err = svn_client_update3
  (
    //o Revisions.
    0,
    //i List of target paths.
    poPaths,
    //i Revision to get.
    & oRevision,
    //i Update depth.
    svn_depth_infinity,
    //i depth is sticky.
    FALSE,
    //i ignore externals.
    TRUE,
    //i allow unversioned obstructions,
    TRUE,
    //i context.
    ctx,
    //i pool
    pool
  );

  //  This will NOT work. Why? svn_client_update3() can't success with
  //  non-existing path.
  if( err )
  {
    svn_handle_error2( err, stderr, 0, "update: " );
  }

  return EXIT_SUCCESS;
}