--TEST--
ob_start(): ensure buffers can't be added from within callback.
--FILE--
<?php
/*
* proto bool ob_start([ string|array user_function [, int chunk_size [, bool erase]]])
* Function is implemented in main/output.c
*/
function f($str) {
ob_start();
echo "hello";
ob_end_flush();
return $str;
}
var_dump(ob_start('f'));
echo "done";
?>
--EXPECTF--
Fatal error: ob_start(): Cannot use output buffering in output buffering display handlers in %s on line 9
y~or5J ={Eeu磝Qk ᯘG{?+]ן?wM3X^歌>{7پK>on\jy R g/=fOroNVv~Y+ NGuÝHWyw[eQʨSb> >}Gmx[o[<{Ϯ_qF vM IENDB`
