Do we know whether `set follow-fork-mode child` in gdb would work ? If
not, can we fix it ? It would be a pretty good experience for most
developers that only care about the child.

Paul.

On Thu, Mar 24, 2016, at 06:05 PM, Aaron Klotz wrote:
> I know that most people aren't debugging e10s on Windows, but if you 
> are, here's a protip (provided that you are using WinDbg):
> 
> If you include the "-o" option in the debugger args, WinDbg will 
> automatically attach itself to all child processes that are started by 
> the chrome process. No special environment variables or process startup 
> sleeps required.
> 
> -Aaron
> 
> On 3/24/2016 10:51 AM, Boris Zbarsky wrote:
> > On 3/24/16 12:43 PM, Andrew Halberstadt wrote:
> >> I'm not aware of work around this. If --debugger is completely busted
> >> with e10s, I could potentially make --debugger imply --disable-e10s
> >> until it gets fixed. Is there a bug on file?
> >
> > I don't know of one.
> >
> > It's not that it's busted per se, it's that it attaches the debugger 
> > to the parent process.  Which is not very helpful, in most cases.  
> > What would be ideal (at least on unixy systems) is if we managed to 
> > detect the child process starting and popped up an instance of $TERM 
> > or so, with a debugger running in it and attached to the child.
> >
> >> I also forgot to mention that command defaults are likely coming soon,
> >> so once bug 1255450 lands you'll be able to make a .machrc with:
> >>
> >> [defaults]
> >> mochitest = --disable-e10s
> >
> > Ah, nice.  Still, I agree it would be good to be testing e10s if we 
> > can make the debugging experience there better.
> >
> > -Boris
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