Use of __HALT_COMPILER_OFFSET__ constant
-----
<?php

var_dump(__HALT_COMPILER_OFFSET__);
__halt_compiler();
Foo
-----
array(
    0: Stmt_Expression(
        expr: Expr_FuncCall(
            name: Name(
                parts: array(
                    0: var_dump
                )
            )
            args: array(
                0: Arg(
                    value: Expr_ConstFetch(
                        name: Name(
                            parts: array(
                                0: __HALT_COMPILER_OFFSET__
                            )
                        )
                    )
                    byRef: false
                    unpack: false
                )
            )
        )
    )
    1: Stmt_HaltCompiler(
        remaining:
    Foo
    )
)