Description:
------------
Steps to reproduce:

- Download and compile PHP 7.0.3 from php.net
- Edit attached script to point to the magic file on your system (comments should help)
- run script through PHP 7 binary
- observe unhandled exception
- run script through PHP 5.x
- observe success messages

Additional information:

using strace, I determined that PHP is opening and reading at least some data from the magic file before throwing an exception. I could not see any information from strace to indicate what the problem might be, though.

The exception doesn't say *why* the file couldn't be loaded, and I don't know how I would get more information about the nature of the exception. All I can prove is that it's not ENOENT.

Test script:
---------------
<?php
  // http://us3.php.net/manual/en/book.fileinfo.php 
  // CentOS keeps its magic file here
  $magic_file = '/usr/share/misc/magic';
  // Debian keeps its magic file here
  $magic_file = '/usr/share/file/magic';

  $finfo = new finfo(FILEINFO_MIME, $magic_file);
  if($finfo) {
    echo "0 fileinfo: create finfo object\n"; } else {
    echo "1 fileinfo: create finfo object failed\n";
    die;
  }

  $type = $finfo->file(__FILE__);
  if($type) {
    echo "0 fileinfo: read file type: $type\n"; } else {
    echo "1 fileinfo: read file type failed\n";
  }
?>


Expected result:
----------------
Running the script through PHP 5.x returns:

0 fileinfo: create finfo object
0 fileinfo: read file type: text/x-php; charset=us-ascii


Actual result:
--------------
0 fileinfo: extension is loaded

Fatal error: Uncaught Exception: finfo::finfo(): Failed to load magic database at '/home/david/code/php/magic'. in /home/david/code/php/php_module_fileinfo.php:35
Stack trace:
#0 /home/david/code/php/php_module_fileinfo.php(35): finfo->finfo(1040, '/home/david/cod...')
#1 {main}
  thrown in /home/david/code/php/php_module_fileinfo.php on line 35