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bug#10580: 24.0.92; gdb initialization takes more than one minute at 100


From: Dov Grobgeld
Subject: bug#10580: 24.0.92; gdb initialization takes more than one minute at 100% CPU
Date: Thu, 10 May 2012 09:00:49 +0300

Here is a link to the gdb bug:

http://sourceware.org/bugzilla/show_bug.cgi?id=14081

I tried running
file-list-exec-source-files and I get duplicates as well. Try the following:

prompt> echo -file-list-exec-source-files > /tmp/gdb.in
prompt> gdb -i=mi emacs < /tmp/gdb.in > /tmp/gdb.out
prompt> perl -ne 'while(/(\w+)=\"(.*?)\"/g) { print "$1=$2\n"; }' /tmp/gdb.out | sort | head -15
file=alloc.c
file=alloc.c
file=allocator.c
file=atimer.c
file=atimer.c
file=bidi.c
file=bidi.c
file=buffer.c
file=buffer.c
file=buffer.h
file=buffer.h
file=buffer.h
file=buffer.h
file=buffer.h
file=buffer.h

My version of gdb is:

GNU gdb (GDB) Fedora (7.2-52.fc14)

For my executable gdb outputs full paths as well as the fullname field, which expands the output considerably.

Still, it bothering me the fact that the above perl _expression_ parses the gdb output in a fraction of a second, (0.01s user time) whereas gdb-mi.el takes more than 40s.

Regards,
Dov

On Wed, May 9, 2012 at 8:36 PM, Eli Zaretskii <address@hidden> wrote:
> Date: Wed, 9 May 2012 11:44:32 +0300
> From: Dov Grobgeld <address@hidden>
> Cc: Eli Zaretskii <address@hidden>, Chong Yidong <address@hidden>, address@hidden
>
> In addition, I filed a bug for gdb that it should uniq the filenames output
> by -file-list-exec-source-files.

Can you provide a link to that bug report?

FWIW, when I use -file-list-exec-source-files while debugging Emacs, I
don't see duplicate file names in the GDB output.  Maybe I'm blind.


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