func: svn_error_t *svn_error_compose_create(svn_error_t *err1,svn_error_t *err2) if ( err1 && err2 )  svn_error_compose ( err1 , svn_error_quick_wrap ( err2 , ( dgettext ( "subversion" , "Additional errors:" ) ) ) ); svn_error_t *svn_error_quick_wrap(svn_error_t *child,const char *new_msg) if ( child == 0 )  return svn_error_create ( child -> apr_err , child , new_msg ) ; svn_error_t *svn_error_create(apr_status_t apr_err,svn_error_t *child,const char *message) svn_error_t * err ; err = make_error_internal ( apr_err , child ); static svn_error_t *make_error_internal(apr_status_t apr_err,svn_error_t *child) apr_pool_t * pool ; svn_error_t * new_error ; if ( child )  pool = child -> pool; new_error = ( memset ( apr_palloc ( pool , sizeof ( ( * new_error ) ) ) , 0 , sizeof ( ( * new_error ) ) ) ); new_error -> apr_err = apr_err; new_error -> child = child; new_error -> pool = pool; return new_error ; 