Runtime errors carry incomplete stack trace

[altaurog]

Errors propagated up from a throw statement carry a full stack trace (#179), but other errors do not.
For example, when I run the following code:

run(a);
run(c);

function run(fn) {
  try {
    fn();
  } catch (err) {
    console.log(err.stack + '\n');
  }
};

function a() { b() }
function b() { throw new Error('full stack trace') }
function c() { d() }
function d() { return 'x'.join(',') } // partial stack trace

I get this output:

Error: full stack trace
    at b (/tmp/stacktest.js:13:26)
    at a (/tmp/stacktest.js:12:16)
    at run (/tmp/stacktest.js:6:5)
    at /tmp/stacktest.js:1:1


TypeError: 'join' is not a function
    at run (/tmp/stacktest.js:6:5)
    at /tmp/stacktest.js:2:1

I'd like the latter stack trace to include at c and at d.