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--TEST--
Bug #78434: Generator skips first item after valid() call
--FILE--
<?php
$function = function () {
yield 0;
};
$wrapper = function () use ($function) {
$generator = $function();
$generator->valid();
yield from $generator;
$generator = $function();
$generator->valid();
yield from $generator;
};
foreach ($wrapper() as $value) {
echo $value, "\n";
}
?>
--EXPECT--
0
0
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