Bug#180486: gcc-3.2: miscompilation on powerpc with -O2 or higher

[Daniel Jacobowitz <dan@debian.org>]

On Mon, Feb 24, 2003 at 10:14:03AM -0500, Camm Maguire wrote:
> Greetings!
> 
> Matthias Klose <doko@cs.tu-berlin.de> writes:
> 
> > Camm Maguire writes:
> > > Package: gcc-3.2
> > > Version: 1:3.2.2-1
> > > Severity: normal
> > > 
> > > When compiling GCL, the produced lisp image segfaults early on
> > > iwhen using -O2 or higher.  All is fine with -O, or with full
> > > optimization using earlier gcc versions on this platform.
> > 
> > - did GCL compile correctly with gcc-3.0 and/or gcc-2.95 using -O2?
> 
> 2.95 yes, actually even with -O3 -fomit-frame-pointer
> 3.0 don't know.
> 
> > - does GCL compile correctly with gcc-snapshot using -O2?
> > 
> 
> Don't know, but will try it if I get a chance.  I used to be able to
> try different compilers on Debian project machines relatively easily
> by:

Just ask debian-admin@lists.d.o to install them.

> dpkg --fsys-tarfile <needed debs> | tar xf -
> export GCC_EXEC_PREFIX=$HOME/usr/lib/gcc-lib/
> export LD_LIBRARY_PATH=$HOME/lib:$HOME/usr/lib
> export LIBRARY_PATH=$HOME/lib:$HOME/usr/lib
> export C_INCLUDE_PATH=$HOME/usr/include
> ln -s gcc-??? usr/bin/gcc
> export PATH=$HOME/usr/bin:$PATH
> 
> but this isn't working of late anymore, due to
> 
> 1) dependencies on latest libc, which in turn depends on latest ld.so,
>    which I can't install as a user

Sure you can, it's just a bit awkward to use.  A couple of wrapper
scripts a la
#!/bin/sh
exec $HOME/lib/ld.so --library-path $HOME/lib:$HOME/usr/lib \
	$HOME/usr/bin/gcc $*

> 2) oddities with stdlib.h installed with the above procedure.  Some
>    defines are missing.

It should work, but you'll have to be more specific about the problems.

-- 
Daniel Jacobowitz
MontaVista Software                         Debian GNU/Linux Developer