Description:
------------
Hi

Exceptions thrown within a __get method lack the `args` array key in the exception backtrace.

This behaviour has been reproduced on three independent systems running Gentoo Linux with different configs. It was _not_ reproducible on 3v4l (see https://3v4l.org/to1qQ).
It looks like the same issue reported in here 10 years ago https://bugs.php.net/bug.php?id=47284

Removing all extensions and modules (last try was a build with just readline enabled) didn't solve the issue.

Ini Changes:
- error_reporting = E_ALL & ~E_STRICT
- memory_limit = 4294967296

Compiler: gcc 9.2
Configuration:
./configure --prefix=/usr --build=x86_64-pc-linux-gnu --host=x86_64-pc-linux-gnu --mandir=/usr/share/man --infodir=/usr/share/info --datadir=/usr/share --sysconfdir=/etc --localstatedir=/var/lib --docdir=/usr/share/doc/php-7.4.0 --htmldir=/usr/share/doc/php-7.4.0/html --prefix=/usr/lib64/php7.4 --mandir=/usr/lib64/php7.4/man --infodir=/usr/lib64/php7.4/info --libdir=/usr/lib64/php7.4/lib --with-libdir=lib64 --localstatedir=/var --without-pear --disable-maintainer-zts --without-password-argon2 --enable-bcmath --with-bz2=/usr --disable-calendar --disable-gcov --enable-ctype --with-curl --enable-dom --without-enchant --disable-exif --without-ffi --enable-fileinfo --enable-filter --disable-ftp --with-gettext=/usr --without-gmp --without-mhash --with-iconv --enable-intl --enable-ipv6 --enable-json --without-kerberos --with-libxml --enable-mbstring --with-openssl --enable-pcntl --enable-phar --enable-pdo --enable-opcache --with-pgsql=/usr --enable-posix --without-pspell --enable-simplexml --disable-shmop --without-snmp --enable-soap --enable-sockets --without-sodium --with-sqlite3 --disable-sysvmsg --disable-sysvsem --disable-sysvshm --with-tidy=/usr --enable-tokenizer --enable-xml --enable-xmlreader --enable-xmlwriter --with-xmlrpc --with-xsl --with-zip --with-zlib=/usr --enable-debug --enable-dba --without-cdb --with-db4=/usr --enable-flatfile --with-gdbm=/usr --disable-inifile --without-qdbm --without-tcadb --without-lmdb --with-freetype --disable-gd-jis-conv --with-jpeg --without-xpm --without-webp --enable-gd --with-mysqli=mysqlnd --without-mysql-sock --without-unixODBC --without-iodbc --without-pdo-odbc --without-oci8 --without-pdo-dblib --without-pdo-mysql --with-pdo-pgsql --with-pdo-sqlite --without-pdo-firebird --without-pdo-oci --with-readline=/usr --without-libedit --without-mm --with-pic --with-external-pcre --without-pcre-jit --cache-file=/var/tmp/portage/dev-lang/php-7.4.0/temp/config.cache --with-config-file-path=/etc/php/cli-php7.4 --with-config-file-scan-dir=/etc/php/cli-php7.4/ext-active --disable-embed --enable-cli --disable-cgi --disable-fpm --without-apxs2 --disable-phpdbg


Test script:
---------------
class FooBar {
  public function __get($text) {
    throw new \Exception();
  }   
}
  
try {
  $foobar = new FooBar();
  $foobar->hello;
} catch (\Exception $e) {
  var_dump($e);
}

Expected result:
----------------
object(Exception)#2 (7) {
  ["message":protected]=>
  string(0) ""
  ["string":"Exception":private]=>
  string(0) ""
  ["code":protected]=>
  int(0)
  ["file":protected]=>
  string(28) "/tmp/bug.php"
  ["line":protected]=>
  int(6)
  ["trace":"Exception":private]=>
  array(1) {
    [0]=>
    array(6) {
      ["file"]=>
      string(28) "/tmp/bug.php"
      ["line"]=>
      int(12)
      ["function"]=>
      string(5) "__get"
      ["class"]=>
      string(6) "FooBar"
      ["type"]=>
      string(2) "->"
      ["args"]=>
      array(1) {
        [0]=>
        string(5) "hello"
      }
    }
  }
  ["previous":"Exception":private]=>
  NULL
}

Actual result:
--------------
object(Exception)#2 (7) {
  ["message":protected]=>
  string(0) ""
  ["string":"Exception":private]=>
  string(0) ""
  ["code":protected]=>
  int(0)
  ["file":protected]=>
  string(28) "/tmp/bug.php"
  ["line":protected]=>
  int(6)
  ["trace":"Exception":private]=>
  array(1) {
    [0]=>
    array(5) {
      ["file"]=>
      string(28) "/tmp/bug.php"
      ["line"]=>
      int(12)
      ["function"]=>
      string(5) "__get"
      ["class"]=>
      string(6) "FooBar"
      ["type"]=>
      string(2) "->"
    }
  }
  ["previous":"Exception":private]=>
  NULL
}