Re: gcc-64 on HP-UX 11.00

["John David Anglin" <dave at hiauly1 dot hia dot nrc dot ca>]

> On Wed 10 Apr 2002 21:44, "John David Anglin" <dave@hiauly1.hia.nrc.ca> wrote:
> > > The latest 'snapshot' as in gcc-20020408.tar.bz2
> > 
> > I'll try the current cvs.

I've duplicated the problem that you found.  It's a bug in the GNU linker.
It's not handling the relocations required for inline plabels correctly.
The function splay_tree_new_with_allocator seg-faults when it is passed
a pointer to the function splay_tree_xmalloc_allocate rather than a pointer
to a function descriptor for splay_tree_xmalloc_allocate.  The problem
is present in both 3.1 and the trunk.

This problem was introduced on 2002-02-22 when splay-tree.c was changed
to use the above indirect call.  The function splay-tree.c is in libiberty.
Libiberty gets built just in stage1 with the HP compiler.  The HP compiler
now uses inline plabels (LTP and RTP selectors).  The HP assembler and
linker can handle these relocation selectors, but unfortunately not the
GNU linker.

Gcc doesn't generate inline plabels on the PA.  It would save one insn
and one data location if we could use these selectors.  However, there
have been problems with them in 32bit land for years.  I think the
current assembler can handle them but the SOM linker still doesn't
handle them.

The work around is to use the HP linker for the initial bootstrap.  I
recommend just building C, install it, then do another full bootstrap
using gcc and the GNU linker.  You have to use the GNU assembler for
both builds.

Could you try another build?  Just remove "--with-gnu-ld" from your
script and specify "--with-ld=/usr/ccs/bin/ld".  You may want to
export LD_PXDB=/usr/bin/true to defer invocation of pxdb.

Dave
-- 
J. David Anglin                                  dave.anglin@nrc.ca
National Research Council of Canada              (613) 990-0752 (FAX: 952-6605)