Re: [PATCH] gas value truncation warning reports truncated values, doesn't look at signedness.

[Bart Samwel]

Alan Modra wrote:
> > > > -- i386, to be precise. So I don't know why Debian compiles with a 
> > > > 64-bit bfd for a 32-bit arch. Would there be any reason for them to do 
> > >
> > > Probably so that readelf, objdump etc. work on 64 bit binaries, such
> > > as those for x86_64.
> >
> > Ah, that explains. But is there a reason then that bfd's bit-width 
> > determines the bit-width of gas as well, all in one swoop? I could 
> > imagine multiple gases on an x86_64 system, one for 64-bit, one for 
> > 32-bit. Or is that handled all in one version of gas?
>
> No, you do have separate gas binaries for each target.  They could
> use the same shared libbfd.so though.  I suspect that's what you
> have on your system.

Then it's funny that as uses 64-bit arithmetic, while it's clearly 
supposed to be a 32-bit assembler (I have an i386 system without any 
64-bit parts -- a P3, to be exact). The arithmetic gas uses depends on 
bfd, which is 64-bit, but I think it might have to depend on the target 
architecture instead, i.e., N-bit target architecture = N-bit 
arithmetic. What do you think?

-- Bart