Re: Regression in 2.6.7 on powerpc: Internal error #10 "Object is of the wrong type." at 0x10c5e4fc

If you would look at the log,

> Missing required foreign symbol 'os_context_float_register_addr'

Something in the code unconditionally requires a symbol which has not been
implemented.
I have simply shown where it was added for Linux and FreeBSD.

I don’t know how else to read this aside from this being a bug in the
source.

On Tue, Aug 11, 2026 at 10:28 PM Stas Boukarev <[email protected]> wrote:

> What are these commits saying? It has #+linux and #-linux. I guess it
> says that someone can't read code.
>
> On Tue, Aug 11, 2026 at 1:35 PM Sergey Fedorov <[email protected]>
> wrote:
> >
> > I guess someone unconditionally enabled a new feature without ensuring
> it is actually implemented.
> >
> > Linux:
> https://github.com/sbcl/sbcl/commit/ebd5ead14785e14c5c17c4b23a228bff385cb27e
> > FreeBSD:
> https://github.com/sbcl/sbcl/commit/acd0f7e95afd60d0c3241cf8b7c7a02677b30514
> >
> > Darwin:
> > Other BSD:
> >
> >
> >
> > On Tue, Aug 11, 2026 at 6:19 PM Sergey Fedorov <[email protected]>
> wrote:
> >>
> >> 2.6.7 does not build on powerpc now. 2.6.6 built earlier.
> >>
> >> :info:build obj/from-xc/src/code/target-format.lisp-obj
> >> :info:build obj/from-xc/src/code/late-globaldb.lisp-obj
> >> :info:build ; SB-Loader: (174+5212) methods/other
> >> :info:build SB-XC:*FEATURES* =
> >> :info:build (:PPC :GENCGC :ALIEN-CALLBACKS :ANSI-CL
> :ANSI-COMPLIANT-LOAD-TRUENAME
> >> :info:build  :BIG-ENDIAN :BSD :COMMON-LISP :COMPARE-AND-SWAP-VOPS
> :DARWIN :GENERATIONAL
> >> :info:build  :IEEE-FLOATING-POINT :MACH-O :OS-PROVIDES-BLKSIZE-T
> :OS-PROVIDES-DLADDR
> >> :info:build  :OS-PROVIDES-DLOPEN :OS-PROVIDES-PTHREAD-SETNAME-NP
> :OS-PROVIDES-SUSECONDS-T
> >> :info:build  :PACKAGE-LOCAL-NICKNAMES :SB-AFTER-XC-CORE
> :SB-CORE-COMPRESSION :SB-DOC
> >> :info:build  :SB-EVAL :SB-LDB :SB-PACKAGE-LOCKS :SB-SOURCE-LOCATIONS
> :SB-THREAD :SB-UNICODE
> >> :info:build  :SB-XREF-FOR-INTERNALS :SBCL :UNIX)
> >> :info:build [building initial core file in "output/cold-sbcl.core":
> >> :info:build writing 4096 bytes [1 page] from #<SB-FASL::GSPACE
> @#x4100000 :STATIC>
> >> :info:build writing 28061696 bytes [6851 pages] from #<SB-FASL::GSPACE
> @#x10000000 :DYNAMIC>
> >> :info:build writing 0 bytes [0 pages] from #<SB-FASL::GSPACE @#x4000000
> :READ-ONLY>
> >> :info:build movable dynamic space: 421 + 3594 + 2836 cons/code/mixed
> pages
> >> :info:build /INITIAL-FUN=#X119A81ED
> >> :info:build done]
> >> :info:build //testing for consistency of first and second GENESIS passes
> >> :info:build //header files match between first and second GENESIS --
> good
> >> :info:build real 9m30.808s
> >> :info:build user 7m19.486s
> >> :info:build sys 1m28.800s
> >> :info:build //entering make-target-2.sh
> >> :info:build //doing warm init - compilation phase
> >> :info:build This is SBCL 2.6.7, an implementation of ANSI Common Lisp.
> >> :info:build More information about SBCL is available at <
> http://www.sbcl.org/>.
> >> :info:build SBCL is free software, provided as is, with absolutely no
> warranty.
> >> :info:build It is mostly in the public domain; some portions are
> provided under
> >> :info:build BSD-style licenses.  See the CREDITS and COPYING files in
> the
> >> :info:build distribution for more information.
> >> :info:build Initial page table:
> >> :info:build      | Immobile Objects |
> >> :info:build  Gen layout symbol   code  Boxed   Cons    Raw   Code
> SmMix  Mixed  LgRaw LgCode  LgMix Waste%       Alloc        Trig   Dirty
> GCs Mem-age
> >> :info:build   6      0      0      0      0    421      0   3594
> 243   2593      0      0      0    0.5    27930752     2000000    3594   0
> 0.0000
> >> :info:build Tot      0      0      0      0    421      0   3594
> 243   2593      0      0      0    0.5    27930752 [5.2% of 536870912 max]
> >> :info:build Missing required foreign symbol
> 'os_context_float_register_addr'
> >> :info:build COLD-INIT... Checking symbol printer: T
> >> :info:build (Length(TLFs)= 5212)
> >> :info:build "obj/from-xc/src/code/show.lisp-obj"
> >> :info:build "obj/from-xc/src/compiler/early-constantp.lisp-obj"
> >> :info:build "obj/from-xc/src/compiler/vop-existsp.lisp-obj"
> >> . . .
> >> :info:build "obj/from-xc/src/code/early-defmethod.lisp-obj"
> >> :info:build "obj/from-xc/src/code/format.lisp-obj"
> >> :info:build "obj/from-xc/src/code/target-format.lisp-obj"
> >> :info:build "obj/from-xc/src/code/late-globaldb.lisp-obj"
> >> :info:build Internal error #10 "Object is of the wrong type." at
> 0x10c5e4fc
> >> :info:build     SC: 0, Offset: 26  0x00000000: even fixnum: 0
> >> :info:build     SC: 3, Offset: 22 $1=  0x10c37001: instance pointer
> >> :info:build    slot 1: 0x201 [raw]
> >> :info:build    slot 13: 0xffffff96 [raw]
> >> :info:build    slot 14: 0xffffffa3 [raw]
> >> :info:build    slot 15: 0x0 [raw]
> >> :info:build    slot 16: 0x0 [raw]
> >> :info:build    slot 17: 0x0 [raw]
> >> :info:build    slot 18: 0x0 [raw]
> >> :info:build    slot 19: 0xfffffffe [raw]
> >> :info:build fatal error encountered in SBCL pid 9687 pthread 0xa0260620:
> >> :info:build internal error too early in init, can't recover
> >> :info:build Welcome to LDB, a low-level debugger for the Lisp runtime
> environment.
> >> :info:build Command failed:  cd
> "/opt/local/var/macports/build/sbcl-0027f3db/work/sbcl-2.6.7" && sh make.sh
> --prefix=/opt/local --xc-host=/opt/local/libexec/sbcl-bootstrap/bin/sbcl
> --arch=ppc --without-sb-simd --fancy
> >> :info:build Exit code: 149
> >
> > _______________________________________________
> > Sbcl-devel mailing list
> > [email protected]
> > https://lists.sourceforge.net/lists/listinfo/sbcl-devel
>

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