676903 - [jsdbg2] Debugger.Frame.prototype.older should reveal non-debuggee frames

Status: NEW

(Core :: JavaScript Engine, defect)

Description

[Jason Orendorff [:jorendorff]]

Currently we just omit non-debuggee code from the stack, but that's crazy.

Edited for brevity:
<jimb> Yes, we should not simply omit frames for calls to non-debuggee code.
<jorendorff> like, suppose you call jquery's forEach method, passing it a
        function.
<jorendorff> maybe forEach calls something else which calls something else
        which then calls your function
<jorendorff> we could just show forEach, and no details
<jorendorff> basically a placeholder frame.
<jorendorff> don't show the other frames
<jimb> Yep.
<jimb> the idea was to treat non-debuggee code as an opaque primitive [hand-wave]
<jimb> You need to know what was called, but then everything younger than that
        that stays within non-debuggee code is just "internal structure", until
        you get to your debuggee callback.