Re: Processed: reassign 179781 to glibc, severity of 179781 is serious, merging 179781 178645

[Daniel Jacobowitz <dan@debian.org>]

On Mon, Feb 17, 2003 at 10:58:21PM +0900, GOTO Masanori wrote:
> Hi Guido,
> Thanks for your explanation.
> 
> At Sun, 16 Feb 2003 23:32:42 +0100,
> Guido Guenther wrote:
> > I'm trying to explain how I understand these issues, but it might not be
> > correct:
> > 
> > On Mon, Feb 17, 2003 at 12:49:44AM +0900, GOTO Masanori wrote:
> > >  1. Why is __fixunsdfdi appeared, on the contrary why is not __fixdfdi
> > >     appeared
> > gcc does the double -> signed long long conversion inline but uses a
> > function call for the unsigned conversion.
> 
> Hmm, I feel it's strange feature... There are no need to distinguish 
> between signed and unsigned.  Is it gcc bug?

The inlining is just based on cost.  One of those operations is cheaper
than the other on 386 hardware.

> > For example:
> > /usr/bin/nm  __udivdi3
> > /usr/bin/nm  __umoddi3
> > /usr/bin/strip  __ucmpdi2
> > /usr/bin/strip  __udivdi3
> 
> I'm sorry, but I can't understand what you mean...  You mean that a binary 
> has _udivdi3 or __umoddi3 and then drops its symbol with strip?

No, strip was just an example.  And it's been rebuilt on i386 since
that measurement was made so you can't see it any more.  But it goes
like this:
  libbfd.so is built
    it contains __udivdi3
  strip is linked to -lbfd
    it needs __udivdi3
    it gets __udivdi3 from libbfd.so
  libbfd.so is recompiled by GCC 3.2
    it no longer provides __udivdi3
  Until strip is recompiled, strip doesn't run.

> > > Well, dcgui (#179781) should be fixed with the latest glibc and gcc
> > > environment.  Moreover, if binaries on woody/sarge works well, then I
> > > think we should not add this compat-patch even if sid binaries causes
> > > such unresolved symbol bug.
> > No. We only add symbols for the woody->sarge transition.
> 
> So, is it debian specific patch?

Uh, I don't think it should be.

-- 
Daniel Jacobowitz
MontaVista Software                         Debian GNU/Linux Developer