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Build failure on mips64el


today, I uploaded a new version of the z3 package, but the build
failed on mips64el with an interesting error message [0]:

  [ 56%] Building CXX object src/tactic/arith/CMakeFiles/arith_tactics.dir/fm_tactic.cpp.o
  In file included from /<<PKGBUILDDIR>>/src/util/rational.h:21,
                   from /<<PKGBUILDDIR>>/src/ast/ast.h:26,
                   from /<<PKGBUILDDIR>>/src/tactic/goal.h:30,
                   from /<<PKGBUILDDIR>>/src/tactic/tactic.h:23,
                   from /<<PKGBUILDDIR>>/src/tactic/tactical.h:21,
                   from /<<PKGBUILDDIR>>/src/tactic/arith/fm_tactic.cpp:25:
  /<<PKGBUILDDIR>>/src/util/mpq.h: In member function ‘void mpq_manager<SYNCH>::add(const mpz&, const mpz&, mpz&)’:
  /<<PKGBUILDDIR>>/src/util/mpq.h:231:53: internal compiler error: Segmentation fault
    231 |     void add(mpz const & a, mpz const & b, mpz & c) { mpz_manager<SYNCH>::add(a, b, c); }
        |                                                     ^
  Please submit a full bug report,
  with preprocessed source if appropriate.
  See <file:///usr/share/doc/gcc-10/README.Bugs> for instructions.
  The bug is not reproducible, so it is likely a hardware or OS problem.

How should I proceed here, given that mips64el is a release
architecture? I don't have a mips64el machine available (and also
don't have the time right now to play around with QEMU), and the log
even says that the issue is not reproducible. Should I just request a
give-back and hope for the best? I would appreciate some advice.


[0] https://buildd.debian.org/status/fetch.php?pkg=z3&arch=mips64el&ver=4.8.9-1&stamp=1600698127&raw=0

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