Description:
------------
When using func_get_args() in combination with array_slice() in 7.2, the results are incorrect. Hard to succinctly describe, see code sample.

https://3v4l.org/oSFoM

Test script:
---------------
<?php

function test_func_get_args() {
    var_dump(func_get_args()); // as expected
}

function test_array_slice($array) {
    var_dump(array_slice($array, 1)); // as expected
}

function test_array_slice_with_func_get_args() {
    var_dump(array_slice(func_get_args(), 1)); // ???
}

$input = [1, 2, 3];

echo "=-=-=-= TEST func_get_args() =-=-=-=\n";
test_func_get_args(...$input);

echo "\n=-=-=-= TEST array_slice() =-=-=-=\n";
test_array_slice($input);

echo "\n=-=-=-= TEST 3 =-=-=-=\n";
test_array_slice_with_func_get_args(...$input);

Expected result:
----------------
=-=-=-= TEST func_get_args() =-=-=-=
array(3) {
  [0]=>
  int(1)
  [1]=>
  int(2)
  [2]=>
  int(3)
}

=-=-=-= TEST array_slice() =-=-=-=
array(2) {
  [0]=>
  int(2)
  [1]=>
  int(3)
}

=-=-=-= TEST 3 =-=-=-=
array(2) {
  [0]=>
  int(2)
  [1]=>
  int(3)
}

Actual result:
--------------
=-=-=-= TEST func_get_args() =-=-=-=
array(3) {
  [0]=>
  int(1)
  [1]=>
  int(2)
  [2]=>
  int(3)
}

=-=-=-= TEST array_slice() =-=-=-=
array(2) {
  [0]=>
  int(2)
  [1]=>
  int(3)
}

=-=-=-= TEST 3 =-=-=-=
array(2) {
  [0]=>
  int(1)
  [1]=>
  int(2)
}