H. J. Lu writes:
> On Wed, Jan 03, 2007 at 10:18:36AM -0800, Seongbae Park wrote:
> > >In fact, by default, gcc for the i386 targets will call _mcount. gcc
> > >for i386 GNU/Linux targets was changed to call mcount instead of
> > >_mcount with this patch:
> > >
> > >Thu Mar 30 06:20:36 1995 H.J. Lu ([EMAIL PROTECTED])
> > >
> > > * configure (i[345]86-*-linux*): Set xmake_file=x-linux,
> > > tm_file=i386/linux.h, and don't set extra_parts.
> > > (i[345]86-*-linux*aout*): New configuration.
> > > (i[345]86-*-linuxelf): Deleted.
> > > * config/linux{,-aout}.h, config/x-linux, config/xm-linux.h: New
> > > files.
> > > * config/i386/linux-aout.h: New file.
> > > * config/i386/linux.h: Extensive modifications to use ELF format
> > > as default.
> > > (LIB_SPEC): Don't use libc_p.a for -p. don't use libg.a
> > > unless for -ggdb.
> > > (LINUX_DEFAULT_ELF): Defined.
> > > * config/i386/linuxelf.h,config/i386/x-linux: Files deleted.
> > > * config/i386/xm-linux.h: Just include xm-i386.h and xm-linux.h.
> > >
> > >I believe that was during the time H.J. was maintaining a separate
> > >branch of glibc for GNU/Linux systems. Presumably his version
> > >provided mcount but not _mcount. I haven't tried to investigate
> > >further.
> > >
> > >In any case clearly gcc for i386 GNU/Linux systems today should call
> > >_mcount rather than mcount. I will make that change.
> >
> > I remember someone wanting to provide his own mcount().
> > Presumably, mcount() is weak in libc to cover such a use case ?
>
> It was a mistake. I don't remember why I did that way when I switched
> Linux from a.out to ELF. It should be fixed.
Trivia time: what is the longest delay between a bug being committed
to gcc before someone notices and a fix being committed? This one is
eleven years and eight months. I wonder if we have a record.
Andrew.
