Description:
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This is a critical bug in PHP 5.1 (PHP_5_1) latest CVS.

running "make install-pear" results in all kinds of E_STRICT warnings.  This is in spite of an explicit -derror_reporting=E_ALL

I traced the problem using var_dump(error_reporting()); peppered throughout the source of install-pear.phar to a single line located in cvs at pear-core/Archive/Tar.php on line 706:

@fseek($this->_file, @ftell($this->_file)+($p_len*512));

removing the second @ in front of ftell() fixes the problem.

Reproduce code:
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make install-pear.phar

use http://pear.php.net/~greg/install-pear.phar for a debug .phar that has inserted a few var_dump(error_reporting()); around the offending line.  int(2047) is E_ALL, and after the line, there are 2 var_dump(error_reporting()) that spit out random integers, ranging from 10 to numbers like 14803908 to -14378917.

A valgrind trace is at:

http://pear.php.net/~greg/pearcrash.txt

Expected result:
----------------
works with no warnings

Actual result:
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install works sometimes, but there are lots of E_STRICT warnings.