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bug#23720: 25.0.94; Issues with GUD (gdb-mi) after upgrade from Emacs 23


From: Eli Zaretskii
Subject: bug#23720: 25.0.94; Issues with GUD (gdb-mi) after upgrade from Emacs 23 to 24/25
Date: Thu, 09 Jun 2016 17:12:32 +0300

> Cc: address@hidden
> From: Guilhem Bichot <address@hidden>
> Date: Thu, 9 Jun 2016 15:46:50 +0200
> 
> > Like I said, I believe this is because your program is running.
> 
> It is not running. I can repeat the problem when the display is:
> Breakpoint 1, JOIN::exec (this=0x7fff70008770) at 
> /home/mysql_src/git/cte/sql/sql_executor.cc:113
> 113   {
> (gdb)
> 
> which very much suggests the program is currently stopped (thus, not 
> running). At that point, I can open another file, and put the cursor on 
> a line of that file, and:
> - C-x C-a C-b does set the breakpoint (another hint that the program 
> isn't stopped).
> - C-x SPC and clicking on the fringe, don't. In emacs23 they do.
> 
> In other words, gdb-mi sees manually-opened-files as "not my business I 
> won't offer my shortcuts there", while gud-gdb sees it differently. The 
> latter is more convenient.
> 
> It is not possible to know in advance all the breakpoints one will need 
> and set them all before "run"...

Ah, okay, I've misunderstood you, sorry.  Yes, this is how stuff works
with gdb-mi.

> ok, now we agree there's a STOP button in emacs24.
> 
>    (gdb) help interrupt
>    Interrupt the execution of the debugged program.
> 
> So, shouldn't this STOP button interrupt my debugged, running program 
> (mysql)?
> Pressing this STOP button in emacs23 does interrupt it.
> It doesn't anymore in emacs24.
> Is it considered normal?

I don't think so, but I don't have any more wisdom to offer about
this.  AFAIU, -exec-interrupt should have interrupted your program,
unless it masks signals.





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