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--TEST--
Bug #72685: Same string is UTF-8 validated repeatedly
--FILE--
<?php
$input_size = 64 * 1024;
$str = str_repeat('a', $input_size);
$start = microtime(true);
$pos = 0;
while (preg_match('/\G\w/u', $str, $m, 0, $pos)) ++$pos;
$end = microtime(true);
var_dump(($end - $start) < 0.5); // large margin, more like 0.05 in debug build
?>
--EXPECT--
bool(true)
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