Re: annotation issue with newer gdb's?

[Bob Rossi <bob@brasko.net>]

On Mon, Apr 06, 2020 at 11:46:47AM -0700, Joel Brobecker wrote:
> > In older versions of gdb (at least until 7.11 which i'm using and
> > possibly later) I see the following behavior when starting gdb and
> > typing, 'b main'
> > 
> >     "\r\n\032\032post-prompt\r\n"
> >     "Breakpoint 1 at 0x4006c0: file test.cpp, line 42.\r\n"
> >     "\r\n\032\032breakpoints-invalid\r\n"
> > 
> > In GDB 9.1, I'm see the following,
> > 
> >     "\r\n\032\032post-prompt\r\n"
> >     "\r\nBreakpoint 1 at \033[34m0x4006c0\033[m: file \033[32mtest.cpp\033[m, line 42."
> >     "\r\n\032\032breakpoints-invalid\r\n"
> > 
> > You can see that the newline moved on the "Breakpoint 1" line
> > from the end of the line (in older versions) to the beginning of the
> > line (in newer versions).
> > 
> > This ultimately caused CGDB to misbehave.
> > 
> > Correctly working CGDB,
> >     Reading symbols from ./main...done.
> >     (gdb) b main
> >     Breakpoint 1 at 0x4006c0: file test.cpp, line 42.
> >     (gdb) 
> > 
> > Incorrectly working CGDB,
> >     Reading symbols from ./main...
> >     (gdb) b main
> > 
> >     Breakpoint 1 at 0x4006c0: file test.cpp, line 42.(gdb) 
> > 
> > Was this change to the annotations made on purpose?
> 
> I haven't followed development much, lately ( :-( ), but I don't
> think so. This looks similer to:
> 
> https://sourceware.org/bugzilla/show_bug.cgi?id=25190

Thanks for pointing to the bug report.

> That particular PR is reported as being fixed for 9.1, so it's
> not the same problem, or the fix was incomplete.
> 
> Have you tried master, by any chance?

Not yet. I might have to.

However, I was playing around and found out that when
    set height 0
is used, gdb shows the bug. However if,
    set pagination off
is used, the error is gone.

I found that really strange as the documentation seems
to indicate that 'set height 0' and 'set pagination off'
are equivalent. I guess not!

I may change CGDB to set pagination off to work around
this issue. Is there anything else I should do at this point?

Thanks,
Bob Rossi