Source: polyml Version: 5.7 Severity: normal On Thu, Nov 02, 2017 at 08:47:30AM -0400, John David Anglin wrote: > On 2017-11-02, at 3:59 AM, Alan Modra wrote: > > Even when this has been worked around by the binutils change, polyml > > still fails to build. > > > > echo "use \"/home/amodra/src/polyml/modules/IntInfAsInt/ROOT.sml\";" | > > ../../poly -q -error-exit > > Segmentation fault > > I'm not seeing this fault. I just redid a polyml build with virgin source > and I didn't see the segmentation fault. > > gcc version 7.2.1 20171025 (Debian 7.2.0-12) > > dave@mx3210:~/debian/polyml/polyml-5.7$ as --version > GNU assembler (GNU Binutils) 2.29.51.20171031 > > Binutils was trunk with your elf32-hppa.c patch.
Yes, but that patch hasn't been committed yet. What's more, binutils-2.28 and binutils-2.29 both fail with a segfault (after working around the OS/ABI problem). I suspect older binutils will show the same thing. In one of my earlier emails to you Dave, I misdiagnosed the segfault as being due to binutils commit d336fa6d82. That wasn't true. > > Some debugging shows this is due to a NULL function pointer, traceable > > back to this relocation in polyexport.o > > > > 00000134 00001301 R_PARISC_DIR32 00000000 PolyProcessEnvGeneral + 0 > > > > That's also an ABI violation. Function pointers on hppa32 require > > plabel relocations. > > No, that's not correct. Calls using function pointers are done using > $$dyncall or equivalent. It checks > the plabel bit to determine whether or not the call is direct or via an > function descriptor. Direct calls > work when a new PIC register value isn't needed. I'll defer to you on whether it is an ABI violation. It's been quite a while since I've done any serious parisc work.. The fact remains that this part of the ABI isn't currently supported by any released binutils as far as I know. -- Alan Modra Australia Development Lab, IBM -- debian-science-maintainers mailing list debian-science-maintainers@lists.alioth.debian.org http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/debian-science-maintainers