Could you please provide a short code demonstrating the problem?

I thought I put some code, but there is not....
Anyway, I found the line causes "goto" like behaviour. It was the line to include HTML file to show users.
(Note: I still have code that alway do that, I tried to make it simple. So far no luck, if I make it simple, it starts working as expected.... I will try again after I upgrade my glibc to see if it fixes the problem)

I've tried to stop script execution as follows.

die('Die before include'); // Works as expected
include('some.html');
die('Die after include); // This will never happen

Inside some.html
<?php
die('Die inside include'); // This will never happen
?>
at the beginning of the file.

My code has many include/require like this. This only happens on the script, but not others. Other scripts work fine. All I can tell is something happens when the file is included. Although, the file can be included w/o problems from other scripts.

I'll post follow up. Because I didn't test the script after I upgraded Japanese Charactor handling module. It might be gone. (I hope)

I tested with 

Newer Japanese Charset Handling module.
=> the same result.

Without these modules
=> the same result.

I was compiled in these Japanese char handling modules in php. I didn't compile these modules in php, but I compile these modules as individual *.so file. The same result.

If I use plain ASCII HTML file for include(). It works. But not with HTML contains EUC.
I'll upgrade my glibc see if it fixes. (Please wait for feedback)

FYI:
Code that causes this. I've tested with require()/include_once()/require_once(), the same result.
Reminder - Include()/require() works fine except on this file.

------------------
// Show Registration complete html
//die('DIED BEFORE INCLUDE'); // Dies as it should
//header('Location: http://www/'); // Just for testing
//include('regist_finished.ihtml'); // HTML file contains EUC. Script executed again from the beginning!! Can't even die at the beginning of the file.
//include('test3.php'); // ASCII char only. Works as expected.
include('cancel.ihtml'); // Another HTML file contains EUC. Script executed again from the beginning!! Can't even die at the beginning of the file.
die('DIED AFTER INCLUDE'); // DO NOT DIE, as it should.
--------------------

I tested with 

Newer Japanese Charset Handling module.
=> the same result.

Without these modules
=> the same result.

I was compiled in these Japanese char handling modules in php. I didn't compile these modules in php, but I compile these modules as individual *.so file. The same result.

If I use plain ASCII HTML file for include(). It works. But not with HTML contains EUC.
I'll upgrade my glibc see if it fixes. (Please wait for feedback)

FYI:
Code that causes this. I've tested with require()/include_once()/require_once(), the same result.
Reminder - Include()/require() works fine except on this file.

------------------
// Show Registration complete html
//die('DIED BEFORE INCLUDE'); // Dies as it should
//header('Location: http://www/'); // Just for testing
//include('regist_finished.ihtml'); // HTML file contains EUC. Script executed again from the beginning!! Can't even die at the beginning of the file.
//include('test3.php'); // ASCII char only. Works as expected.
include('cancel.ihtml'); // Another HTML file contains EUC. Script executed again from the beginning!! Can't even die at the beginning of the file.
die('DIED AFTER INCLUDE'); // DO NOT DIE, as it should.
--------------------

It seems it is related to reference.

The registration is done in a function and if there are error the function returns array contains error messages. It can be relatively large, so I returned reference. I get rid of the reference, then it start working as it should.

i.e. 
function &register() <= script executed from the beginning.
function register() <= works as it should.

Hope this info helps.

I forgot comment that it does not happen with simple scripts that have the same logic. So trying to make a script that causes this problem is just a waste of your time.

I'll test some more, so please wait feedback.

At first I should correct that included file that causes this problem is only one file and returning reference from the functions does not make difference. (Script was not uploaded to server. I tested again, the file causes this problem only happens when the file is included, and reference does not make changes)

I've tested with 4.0.4pl1 and 4.0.5-dev (200103092045)
with 
 - RedHat Linux7/j (glibc is updated to 2.2, gcc also updated - Redhat's RPM)
 - Apache 1.3.17 w/ mod-ssl, mod-gzip and other apache modules comes with apache. (Tested both w/ and w/o ssl)

For 4.0.5-dev, I only add PostgreSQL module.
'./configure' '--with-apxs' '--disable-short-tags' '--with-pgsql'

Results are the same.

I also included the file that causes this from other script. The file is included w/o any problems.

I tried to make a simple script that reproduce this problem again, but I could not.

Since I can easily workaround with this problem and I've seen this only once so far, I'll leave this problem.
(If I don't use function, the code works as expected)

If you have similar bug report and need more info, please let me know.

PS: Someone post similar problem regarding ob_ob_get_contents(). I asked what kind of environment he uses. I'll post report, if I can find out anything.

Also reported as fixed.