[MI] -exec-return or CLI 'return' do not trigger MI events

Marc Khouzam marc.khouzam@ericsson.com
Fri Feb 12 15:33:00 GMT 2010


> -----Original Message-----
> From: gdb-owner@sourceware.org 
> [mailto:gdb-owner@sourceware.org] On Behalf Of Vladimir Prus
> Sent: Friday, February 12, 2010 5:28 AM
> To: gdb@sources.redhat.com
> Subject: Re: [MI] -exec-return or CLI 'return' do not trigger 
> MI events
> 
> Marc Khouzam wrote:
> 
> > Hi,
> > 
> > I just noticed that GDB 7.0.1 does not issue MI events
> > *running and *stopped for the CLI 'return' command.
> > This is the relevant output, while the whole (small)
> > session is after.
> > 
> > (gdb) -exec-return
> > 
> ^done,frame={level="0",addr="0x08048412",func="foo",args=[],fi
> le="a.cc",fullname="/local/lmckhou/testing/a.cc",line="6"}
> > (gdb) return
> > &"return\n"
> > ~"#0  main () at a.cc:9\n"
> > ~"9\t    return 0;\n"
> > ^done
> > 
> > Do you want me to write a bug?
> 
> For all I can tell, the 'return' command does not actually 
> resume the target.
> It just pops the stack.

Ok, but how does the frontend know the stack has been poped
and the editor should show a new line?
When we use GDB 7.0 we only listen for MI events to update the
frontend data.

I'll have to fix this for '-exec-return' anyway to support
GDB 7.0, but with respect to GDB itself, aren't we missing
some MI event then?

Thanks

Marc



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