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<?php function test_call($first, &$a) { echo '<div>here</div>'; } function test_warning($args) { $test_call = 'test_call'; $test_call( ...$args ); // this line works $args[ 0 ] = 1; $test_call( ...$args ); // this line causes error } class TestWarningClass{ function __construct() { $args = array( 1, &$this ); test_warning($args); } } $test = new TestWarningClass;
Output for git.master, git.master_jit
<div>here</div><div>here</div>

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