Description:
------------
Tested in 5.3.8, 5.2.9 and 5.4RC5, APC not enabled.

At compile time, two nested includes fail when both use bracketed namespaces or mix bracketed and unbracketed ones.

The compile time behavior of PHP is described in:
https://bugs.php.net/bug.php?id=42098

I found a workaround that makes me think that some internal state is not initialized correctly when using namespaces.

See test script for more details.

Test script:
---------------
<?php

// This test script uses eval, but the same arise when including files.

error_reporting(E_ALL | E_STRICT);

set_error_handler('eh');

// The code in the eval triggers an E_DEPRECATED because of "=& new"
// so eh() is called to handle the error, _at_compile_time_.
// Note the unbracketed namespace declaration.
eval('namespace b; $a =& new \stdClass; ');

function eh()
{
    // dynamically load class a\abc,
    // using bracketed namespace declaration
    // but this fails with fatal error.
    // uncomment the following line, and things work again perfectly.
    //eval(';');
    eval('namespace a{ class abc{} }');
    print_r(new a\abc);
}

Expected result:
----------------
No error

Actual result:
--------------
Fatal error: Cannot mix bracketed namespace declarations with unbracketed namespace declarations