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bug#22772: 25.0.91; Can't run gud-gdb on two instances of the same progr


From: Michael Welsh Duggan
Subject: bug#22772: 25.0.91; Can't run gud-gdb on two instances of the same program
Date: Mon, 22 Feb 2016 13:25:33 -0500
User-agent: Gnus/5.130012 (Ma Gnus v0.12) Emacs/25.0.91 (gnu/linux)

Eli Zaretskii <address@hidden> writes:

>> From: Michael Welsh Duggan <address@hidden>
>> Date: Mon, 22 Feb 2016 12:37:20 -0500
>> 
>> I use M-x gud-gdb, since the MI client doesn't support multipl
>> debugger instances (which is sad).
>
> What happens if you try debugging several programs at the same time
> using the MI client?  I just tried that in Emacs 25.0.91, and it seems
> to work for me; in particular, I see 2 instances of GDB running under
> Emacs.  So I wonder what doesn't work for you.
>
> Also, latest versions of GDB support debugging multiple programs
> inside the same GDB session; not sure if this helps you.

You have a good point.  I haven't tried that in some years.  I will give
the MI version a go.

>> This fails, though, since I get the error:
>> 
>>   gud-common-init: This program is already being debugged
>> 
>> These programs are installed in different directories, but have the same
>> filename.  I can work around this problem by renaming one of the
>> executables, but I think this is a bug, since the path to the executable
>> could be used to determine uniqueness instead of the filename itself.
>
> I think we should avoid developing gud-gdb if gdb-mi.el provides a
> reasonable solution for the same use case.  So let's first try to
> figure out of "M-x gdb" could work for you, and try fixing it if it
> doesn't.

Using M-x gdb on a two binaries in separate directories with the same
name still ends up with:

  gud-common-init: This program is already being debugged

-- 
Michael Welsh Duggan
(address@hidden)





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