Re: [RFA:] Don't use multilib strings in libgloss/m32r/trapmon0.c

["J. Johnston" <jjohnstn at redhat dot com>]

Joel Sherrill wrote:
> 
> "J. Johnston" wrote:
> >
> > Hans-Peter Nilsson wrote:
> > >
> > > Multi-line string literals are deprecated in gcc-3.1 and are
> > > removed from GCC trunk, so some fix is needed.  Here's one I've
> > > been using for a while.  Please tell if ok to commit.
> > >
> > > libgloss:
> > > 2002-04-13  Hans-Peter Nilsson  <hp@bitrange.com>
> > >
> > >         * m32r/trapmon0.c (__trap0): Don't use multi-line strings.
> > >
> > >
> >
> > Checked in.  Thanks.  The change to gcc is going to be a major pain for embedded developers.
> 
> I couldn't agree more.  I found 1000s of asm statements in a quick
> grep of newlib, RTEMS, and gdb. :(  Hopefully most are single liners.
> 
> I accept the fact that we all are going to have to do this but ..
> 
> Could someone explain to me why this is a useful change technically?
>

It isn't a useful change.  IMO, the asm construct is an extension to the
language and need not follow any ANSI format.  As it turns out, the multi-line string
was allowed in general and the compiler does not distinguish the rules inside the
asm construct.  When they decided to shut it off, the use of it everywhere, including
the asm construct got hit.

> And is there anyway short of brute force to address this?
>

Not that I know of.  I don't think it is easy for the compiler to add such support
just for the asm context.  The deadline to get this done is by gcc 3.2 where it becomes 
an error.
 
-- Jeff J.