Description:
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Opening a pipe for read , for example for a cgi (in this example) will block on the fread AFTER a call to a call with an entry file

I got the error on Windows, Linux, from PHP 5.0.2, PHP 5.0.4, PHP5.1 on CVS (did not try on other versions either)

For example:
Call 1: popen("/usr/bin/php5"); with SCRIPT_FILENAME=info.php    WORKS perfectly, and is repeatible X times

Call 2: popen("/usr/bin/php5"); with SCRIPT_FILENAME=info.php<tempfile    WORKS perfectly... BUT

Call 3: after the call 2
popen("/usr/bin/php5"); with SCRIPT_FILENAME=info.php    WILL HANG AND TOTALLY BLOCK but without using CPU time.

compile: compiled downloaded version on windows, 
natural php.ini without modifications
On linux: compiled as CLI, CGI, no more options than mysql

The bug do not depends on what is compiled with php

Thx



Reproduce code:
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For linux code example :
http://www.thomassigny.org/bugpipe/linux/
For windows code example :
http://www.thomassigny.org/bugpipe/windows/

Expected result:
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i expect the code does not hang...

Actual result:
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 no backtrace, the running code hang