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[Bug 218164] lang/gcc5: Bootstrap comparison failure

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[Bug 218164] lang/gcc5: Bootstrap comparison failure

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=218164

            Bug ID: 218164
           Summary: lang/gcc5: Bootstrap comparison failure
           Product: Ports & Packages
           Version: Latest
          Hardware: sparc64
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: Individual Port(s)
          Assignee: [hidden email]
          Reporter: [hidden email]
                CC: [hidden email]
                CC: [hidden email]
          Assignee: [hidden email]
             Flags: maintainer-feedback?([hidden email])

I am attempting to compile gcc5 on FreeBSD 11.0-RELEASE-p2 on sparc64.
The compilation fails during bootstrap comparison.

I attempted to compile gcc5 with the default system compiler (gcc 4.2.1) as
well as with gcc47 (which built normally); both give the same error.

...
...
Comparing stages 2 and 3
warning: gcc/cc1-checksum.o differs
warning: gcc/cc1obj-checksum.o differs
warning: gcc/cc1plus-checksum.o differs
Bootstrap comparison failure!
gcc/fortran/simplify.o differs
gcc/cfgexpand.o differs
gcc/haifa-sched.o differs
gcc/sched-rgn.o differs
gcc/tree-ssa-dce.o differs
gcc/tree-ssa-loop-niter.o differs
gcc/tree-ssa-sccvn.o differs
libcpp/macro.o differs
libdecnumber/decimal128.o differs
libiberty/pic/sha1.o differs
sparc64-portbld-freebsd11.0/libgcc/_divdi3.o differs
sparc64-portbld-freebsd11.0/libstdc++-v3/src/c++11/sstream-inst.o differs
gmake[4]: *** [Makefile:19638: compare] Error 1
gmake[4]: Leaving directory '/usr/ports/lang/gcc5/work/.build'
gmake[3]: *** [Makefile:19618: stage3-bubble] Error 2
gmake[3]: Leaving directory '/usr/ports/lang/gcc5/work/.build'
gmake[2]: *** [Makefile:19692: bootstrap-lean] Error 2
gmake[2]: Leaving directory '/usr/ports/lang/gcc5/work/.build'
===> Compilation failed unexpectedly.
Try to set MAKE_JOBS_UNSAFE=yes and rebuild before reporting the failure to
the maintainer.
*** Error code 1

Stop.
make[1]: stopped in /usr/ports/lang/gcc5
*** Error code 1

Stop.
make: stopped in /usr/ports/lang/gcc5

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[Bug 218164] lang/gcc5: Bootstrap comparison failure

bugzilla-noreply
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=218164

--- Comment #1 from Michał "phoe" Herda <[hidden email]> ---
Same thing with gcc48:

...
...
Comparing stages 2 and 3
warning: gcc/cc1obj-checksum.o differs
warning: gcc/cc1-checksum.o differs
warning: gcc/cc1plus-checksum.o differs
Bootstrap comparison failure!
gcc/omp-low.o differs
libcpp/line-map.o differs
libiberty/pic/regex.o differs
libiberty/md5.o differs
libiberty/cp-demangle.o differs
sparc64-portbld-freebsd11.0/libgcc/_floatundidf_s.o differs
sparc64-portbld-freebsd11.0/libstdc++-v3/src/c++98/bitmap_allocator.o differs
gmake[4]: *** [Makefile:18939: compare] Error 1
gmake[4]: Leaving directory '/usr/ports/lang/gcc48/work/.build'
gmake[3]: *** [Makefile:18919: stage3-bubble] Error 2
gmake[3]: Leaving directory '/usr/ports/lang/gcc48/work/.build'
gmake[2]: *** [Makefile:18993: bootstrap-lean] Error 2
gmake[2]: Leaving directory '/usr/ports/lang/gcc48/work/.build'
===> Compilation failed unexpectedly.
Try to set MAKE_JOBS_UNSAFE=yes and rebuild before reporting the failure to
the maintainer.
*** Error code 1

Stop.
make[1]: stopped in /usr/ports/lang/gcc48
*** Error code 1

Stop.
make: stopped in /usr/ports/lang/gcc48

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[Bug 218164] lang/gcc5: Bootstrap comparison failure

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In reply to this post by bugzilla-noreply
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=218164

--- Comment #2 from Michał "phoe" Herda <[hidden email]> ---
I can build both gcc5 and gcc48 as long as I do not select bootstrapping in
config.

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[Bug 218164] lang/gcc5: Bootstrap comparison failure

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In reply to this post by bugzilla-noreply
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=218164

Gerald Pfeifer <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Assignee|[hidden email]          |[hidden email]
                   |                            |rg
              Flags|maintainer-feedback?(gerald |
                   |@FreeBSD.org)               |

--- Comment #3 from Gerald Pfeifer <[hidden email]> ---
(In reply to Michał "phoe" Herda from comment #2)
> I can build both gcc5 and gcc48 as long as I do not select bootstrapping
> in config.

If anything, it's actually supposed to be the other way around,
boostrapping should be the safer option.

The error you see is GCC compiling itself repeatedly does not lead
to a consistent result as it should.

Clearly this does not happen for other SPARC targets of GCC, and I'm
afraid I won't be able to help with this.

(Luckily there is at least a workaround of disabling bootstrap, which
is the default for lang/gcc.)

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[Bug 218164] lang/gcc5: Bootstrap comparison failure

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In reply to this post by bugzilla-noreply
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=218164

Rene Ladan <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |Overcome By Events
             Status|New                         |Closed
                 CC|                            |[hidden email]

--- Comment #4 from Rene Ladan <[hidden email]> ---
Expired port removed.

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