Re: GDB 12.0.90 available for testing

[Hannes Domani <ssbssa@yahoo.de>]

 Am Freitag, 1. April 2022, 18:18:34 MESZ hat Eli Zaretskii via Gdb-patches <gdb-patches@sourceware.org> Folgendes geschrieben:

> > From: Andrew Burgess <aburgess@redhat.com>
> > Cc: pedro@palves.net, gdb-patches@sourceware.org, brobecker@adacore.com
> > Date: Fri, 01 Apr 2022 16:21:35 +0100
> >
> > >> So I guess there are problems with making the console input stream
> > >> unbuffered, at least on MS-Windows?
> > >
> > > Or maybe read_command_file shouldn't call setbuf for the same stream
> > > repeatedly, but only once?
> >
> > I think it must be the former, as far as I can tell with the patch I
> > posted we call setbuf just once on stdin (for your -i=mi case).  The
> > read_command_file will only be called if you have gdbinit files to read
> > in.  You could try adding the -nx and -nh options when starting GDB to
> > prevent any gdbinit files being read, but I'd be amazed if that makes a
> > difference.
>
> It indeed doesn't.
>
>
> > Sorry I can't offer more insight.
>
>
> So what would be the way forward?  The patch below fixes the problem
> for me.  But given that Joel says the problem doesn't happen in your
> MinGW builds, maybe we shouldn't install it, even for MinGW?  Or
> condition it only by symbols available in mingw.org's MingW?

I just finished my build of gdb 12 branch with a mingw-w64 gcc, and I also have that
problem when starting gdb with -i=mi:

(gdb)
r -Q
&"g\n"
&"Ambiguous command \"g\": gcore, generate-core-file, goto-bookmark, gr, gu, guile, guile-repl.\n"
^error,msg="Ambiguous command \"g\": gcore, generate-core-file, goto-bookmark, gr, gu, guile, guile-repl."


If I "delete" that not-visible 'g' with backspace before I enter the command, it works again.
So there definitely is something weird going on here.


Not related, but on my first test with TUI I noticed that a line-break is missing
after the "Load new symbol table" question:

(gdb) file c:/heob/heob64.exe
Load new symbol table from "c:/heob/heob64.exe"? (y or n) yReading symbols from c:/heob/heob64.exe...
(gdb) file c:/heob/heob32.exe
Load new symbol table from "c:/heob/heob32.exe"? (y or n) yReading symbols from c:/heob/heob32.exe...

It's fine outside of TUI:

(gdb) file c:/heob/heob64.exe
Load new symbol table from "c:/heob/heob64.exe"? (y or n) y
Reading symbols from c:/heob/heob64.exe...
(gdb) file c:/heob/heob32.exe
Load new symbol table from "c:/heob/heob32.exe"? (y or n) y
Reading symbols from c:/heob/heob32.exe...


I will try to debug these, maybe I can figure them out.


Regards
Hannes