Fix get_function_or_method_name when included file is scoped

[vajexal]

get_function_or_method_name causes segfault when called on scoped included file (require or include from class method)

How to reproduce:

we'll need one extra php function

PHP_FUNCTION(get_current_function_name) {
    ZEND_PARSE_PARAMETERS_NONE();

    zend_string *function_name = get_function_or_method_name(EG(current_execute_data)->prev_execute_data->func);

    RETURN_STR(function_name);
}

// a.php

class Foo
{
    public static function bar()
    {
        return require 'b.php';
    }
}

var_dump(Foo::bar());

// b.php

return [
    'foo' => get_current_function_name(),
];

[kocsismate]

IMO this should be fixed in earlier branches as well

[cmb69]

It might make sense to add a respective regression test. The required userland function could be defined in ext/zend_test.

[cmb69]

Thanks for the PR, and adding the regression test. There is a minor issue regarding PHP-8.0; other than that, the patch looks good.