I faced the same error, which appears to be caused by gcc-5.3.0. After 
downgrading to gcc-4.9.3, brial compiled successfully.
I am now stuck with a segmentation fault related to doc-html.

Am Mittwoch, 30. März 2016 19:15:14 UTC+2 schrieb Witold Żarowski:
>
> I can confirm that I was able to compile mprf using the patch you provided.
> Then ATLAS was compiling for ages, and after that another error occurred, 
> this time compiling brial:
> ========================================
> libtool: compile:  g++ -DHAVE_CONFIG_H -I. 
> -I../../libpolybori/include/polybori -I../../groebner/include 
> -I../../libpolybori/include -std=c++98 -ftemplate-depth-100 -g -O2 -MT 
> BlockDegLexOrder.lo -MD -MP -MF .deps/BlockDegLexOrder.Tpo -c 
> BlockDegLexOrder.cc  -DDLL_EXPORT -DPIC -o .libs/BlockDegLexOrder.o
> In file included from 
> ../../libpolybori/include/polybori/cudd/../../../../Cudd/cudd/cudd.h:90:0,
>                  from ../../libpolybori/include/polybori/cudd/cudd.h:20,
>                  from ../../libpolybori/include/polybori/pbori_defs.h:27,
>                  from 
> ../../libpolybori/include/polybori/BlockDegLexOrder.h:19,
>                  from BlockDegLexOrder.cc:18:
> /usr/lib/gcc/x86_64-pc-cygwin/5.3.0/include/c++/cstdio:175:11: error: 
> '::snprintf' has not been declared
>    using ::snprintf;
>            ^
> /usr/lib/gcc/x86_64-pc-cygwin/5.3.0/include/c++/cstdio:176:11: error: 
> '::vfscanf' has not been declared
>    using ::vfscanf;
>            ^
> ========================================
>

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Setting permissions of DOT_SAGE directory so only you can read and write it.
Traceback (most recent call last):
  File "/home/stottmeister/downloads/sage-7.1/local/lib/python/runpy.py", line 
151, in _run_module_as_main
    mod_name, loader, code, fname = _get_module_details(mod_name)
  File "/home/stottmeister/downloads/sage-7.1/local/lib/python/runpy.py", line 
109, in _get_module_details
    return _get_module_details(pkg_main_name)
  File "/home/stottmeister/downloads/sage-7.1/local/lib/python/runpy.py", line 
101, in _get_module_details
    loader = get_loader(mod_name)
  File "/home/stottmeister/downloads/sage-7.1/local/lib/python/pkgutil.py", 
line 464, in get_loader
    return find_loader(fullname)
  File "/home/stottmeister/downloads/sage-7.1/local/lib/python/pkgutil.py", 
line 474, in find_loader
    for importer in iter_importers(fullname):
  File "/home/stottmeister/downloads/sage-7.1/local/lib/python/pkgutil.py", 
line 430, in iter_importers
    __import__(pkg)
  File 
"/home/stottmeister/downloads/sage-7.1/local/lib/python2.7/site-packages/sage_setup/docbuild/__init__.py",
 line 22, in <module>
    import sage.all
  File 
"/home/stottmeister/downloads/sage-7.1/local/lib/python2.7/site-packages/sage/all.py",
 line 105, in <module>
    import sage.symbolic.pynac
  File "sage/symbolic/pynac.pyx", line 2371, in init sage.symbolic.pynac 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/symbolic/pynac.cpp:28292)
  File "sage/symbolic/pynac.pyx", line 2257, in 
sage.symbolic.pynac.init_pynac_I 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/symbolic/pynac.cpp:24698)
  File 
"/home/stottmeister/downloads/sage-7.1/local/lib/python2.7/site-packages/sage/rings/number_field/number_field.py",
 line 898, in QuadraticField
    return NumberField(f, name, check=False, embedding=embedding, 
latex_name=latex_name, **args)
  File 
"/home/stottmeister/downloads/sage-7.1/local/lib/python2.7/site-packages/sage/rings/number_field/number_field.py",
 line 511, in NumberField
    return NumberField_version2(polynomial=polynomial, name=name, check=check, 
embedding=embedding, latex_name=latex_name, 
assume_disc_small=assume_disc_small, maximize_at_primes=maximize_at_primes, 
structure=structure)
  File "sage/structure/factory.pyx", line 363, in 
sage.structure.factory.UniqueFactory.__call__ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/structure/factory.c:1550)
  File "sage/structure/factory.pyx", line 406, in 
sage.structure.factory.UniqueFactory.get_object 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/structure/factory.c:1905)
  File 
"/home/stottmeister/downloads/sage-7.1/local/lib/python2.7/site-packages/sage/rings/number_field/number_field.py",
 line 633, in create_object
    return NumberField_quadratic(polynomial, name, latex_name, check, 
embedding, assume_disc_small=assume_disc_small, 
maximize_at_primes=maximize_at_primes, structure=structure)
  File 
"/home/stottmeister/downloads/sage-7.1/local/lib/python2.7/site-packages/sage/rings/number_field/number_field.py",
 line 10129, in __init__
    self._standard_embedding = CDF.has_coerce_map_from(self) and 
CDF(rootD).imag() > 0
  File "sage/rings/complex_double.pyx", line 333, in 
sage.rings.complex_double.ComplexDoubleField_class.__call__ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/complex_double.c:5300)
  File "sage/structure/parent.pyx", line 1111, in 
sage.structure.parent.Parent.__call__ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/structure/parent.c:9828)
  File "sage/categories/map.pyx", line 1691, in 
sage.categories.map.FormalCompositeMap._call_ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/categories/map.c:11323)
  File "sage/rings/number_field/number_field_morphisms.pyx", line 124, in 
sage.rings.number_field.number_field_morphisms.NumberFieldEmbedding._call_ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/number_field/number_field_morphisms.c:3111)
  File "sage/rings/number_field/number_field_morphisms.pyx", line 135, in 
sage.rings.number_field.number_field_morphisms.NumberFieldEmbedding._call_ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/number_field/number_field_morphisms.c:3046)
  File "sage/rings/polynomial/polynomial_rational_flint.pyx", line 497, in 
sage.rings.polynomial.polynomial_rational_flint.Polynomial_rational_flint.__call__
 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/polynomial/polynomial_rational_flint.cpp:6926)
  File "sage/rings/polynomial/polynomial_element.pyx", line 733, in 
sage.rings.polynomial.polynomial_element.Polynomial.__call__ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/polynomial/polynomial_element.c:8438)
  File "sage/structure/element.pyx", line 880, in 
sage.structure.element.Element.is_zero 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/structure/element.c:8934)
  File "sage/structure/element.pyx", line 866, in 
sage.structure.element.Element.__nonzero__ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/structure/element.c:8867)
  File "sage/structure/element.pyx", line 1005, in 
sage.structure.element.Element.__richcmp__ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/structure/element.c:9689)
  File "sage/structure/element.pyx", line 1040, in 
sage.structure.element.Element._richcmp_ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/structure/element.c:9870)
  File "sage/rings/real_lazy.pyx", line 699, in 
sage.rings.real_lazy.LazyFieldElement._cmp_ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/real_lazy.c:8629)
  File "sage/rings/real_lazy.pyx", line 771, in 
sage.rings.real_lazy.LazyFieldElement.approx 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/real_lazy.c:9310)
  File "sage/rings/real_lazy.pyx", line 1638, in 
sage.rings.real_lazy.LazyAlgebraic.eval 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/real_lazy.c:17724)
  File "sage/rings/polynomial/polynomial_element.pyx", line 6496, in 
sage.rings.polynomial.polynomial_element.Polynomial.roots 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/polynomial/polynomial_element.c:54070)
  File 
"/home/stottmeister/downloads/sage-7.1/local/lib/python2.7/site-packages/sage/rings/polynomial/complex_roots.py",
 line 258, in complex_roots
    rts = cfac.roots(multiplicities=False)
  File "sage/rings/polynomial/polynomial_element.pyx", line 6421, in 
sage.rings.polynomial.polynomial_element.Polynomial.roots 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/polynomial/polynomial_element.c:51904)
  File "sage/rings/polynomial/polynomial_element.pyx", line 5326, in 
sage.rings.polynomial.polynomial_element.Polynomial._pari_ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/polynomial/polynomial_element.c:46962)
  File "sage/rings/polynomial/polynomial_element.pyx", line 5379, in 
sage.rings.polynomial.polynomial_element.Polynomial._pari_with_name 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/polynomial/polynomial_element.c:47464)
  File "sage/rings/complex_number.pyx", line 575, in 
sage.rings.complex_number.ComplexNumber._pari_ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/complex_number.c:6870)
  File "sage/rings/real_mpfr.pyx", line 3108, in 
sage.rings.real_mpfr.RealNumber._pari_ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/real_mpfr.c:22176)
  File "src/cysignals/signals.pyx", line 108, in 
cysignals.signals.sig_raise_exception (build/src/cysignals/signals.c:1342)
cysignals.signals.SignalError: Segmentation fault
Traceback (most recent call last):
  File "/home/stottmeister/downloads/sage-7.1/local/lib/python/runpy.py", line 
151, in _run_module_as_main
    mod_name, loader, code, fname = _get_module_details(mod_name)
  File "/home/stottmeister/downloads/sage-7.1/local/lib/python/runpy.py", line 
109, in _get_module_details
    return _get_module_details(pkg_main_name)
  File "/home/stottmeister/downloads/sage-7.1/local/lib/python/runpy.py", line 
101, in _get_module_details
    loader = get_loader(mod_name)
  File "/home/stottmeister/downloads/sage-7.1/local/lib/python/pkgutil.py", 
line 464, in get_loader
    return find_loader(fullname)
  File "/home/stottmeister/downloads/sage-7.1/local/lib/python/pkgutil.py", 
line 474, in find_loader
    for importer in iter_importers(fullname):
  File "/home/stottmeister/downloads/sage-7.1/local/lib/python/pkgutil.py", 
line 430, in iter_importers
    __import__(pkg)
  File 
"/home/stottmeister/downloads/sage-7.1/local/lib/python2.7/site-packages/sage_setup/docbuild/__init__.py",
 line 22, in <module>
    import sage.all
  File 
"/home/stottmeister/downloads/sage-7.1/local/lib/python2.7/site-packages/sage/all.py",
 line 105, in <module>
    import sage.symbolic.pynac
  File "sage/symbolic/pynac.pyx", line 2371, in init sage.symbolic.pynac 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/symbolic/pynac.cpp:28292)
  File "sage/symbolic/pynac.pyx", line 2257, in 
sage.symbolic.pynac.init_pynac_I 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/symbolic/pynac.cpp:24698)
  File 
"/home/stottmeister/downloads/sage-7.1/local/lib/python2.7/site-packages/sage/rings/number_field/number_field.py",
 line 898, in QuadraticField
    return NumberField(f, name, check=False, embedding=embedding, 
latex_name=latex_name, **args)
  File 
"/home/stottmeister/downloads/sage-7.1/local/lib/python2.7/site-packages/sage/rings/number_field/number_field.py",
 line 511, in NumberField
    return NumberField_version2(polynomial=polynomial, name=name, check=check, 
embedding=embedding, latex_name=latex_name, 
assume_disc_small=assume_disc_small, maximize_at_primes=maximize_at_primes, 
structure=structure)
  File "sage/structure/factory.pyx", line 363, in 
sage.structure.factory.UniqueFactory.__call__ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/structure/factory.c:1550)
  File "sage/structure/factory.pyx", line 406, in 
sage.structure.factory.UniqueFactory.get_object 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/structure/factory.c:1905)
  File 
"/home/stottmeister/downloads/sage-7.1/local/lib/python2.7/site-packages/sage/rings/number_field/number_field.py",
 line 633, in create_object
    return NumberField_quadratic(polynomial, name, latex_name, check, 
embedding, assume_disc_small=assume_disc_small, 
maximize_at_primes=maximize_at_primes, structure=structure)
  File 
"/home/stottmeister/downloads/sage-7.1/local/lib/python2.7/site-packages/sage/rings/number_field/number_field.py",
 line 10129, in __init__
    self._standard_embedding = CDF.has_coerce_map_from(self) and 
CDF(rootD).imag() > 0
  File "sage/rings/complex_double.pyx", line 333, in 
sage.rings.complex_double.ComplexDoubleField_class.__call__ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/complex_double.c:5300)
  File "sage/structure/parent.pyx", line 1111, in 
sage.structure.parent.Parent.__call__ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/structure/parent.c:9828)
  File "sage/categories/map.pyx", line 1691, in 
sage.categories.map.FormalCompositeMap._call_ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/categories/map.c:11323)
  File "sage/rings/number_field/number_field_morphisms.pyx", line 124, in 
sage.rings.number_field.number_field_morphisms.NumberFieldEmbedding._call_ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/number_field/number_field_morphisms.c:3111)
  File "sage/rings/number_field/number_field_morphisms.pyx", line 135, in 
sage.rings.number_field.number_field_morphisms.NumberFieldEmbedding._call_ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/number_field/number_field_morphisms.c:3046)
  File "sage/rings/polynomial/polynomial_rational_flint.pyx", line 497, in 
sage.rings.polynomial.polynomial_rational_flint.Polynomial_rational_flint.__call__
 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/polynomial/polynomial_rational_flint.cpp:6926)
  File "sage/rings/polynomial/polynomial_element.pyx", line 733, in 
sage.rings.polynomial.polynomial_element.Polynomial.__call__ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/polynomial/polynomial_element.c:8438)
  File "sage/structure/element.pyx", line 880, in 
sage.structure.element.Element.is_zero 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/structure/element.c:8934)
  File "sage/structure/element.pyx", line 866, in 
sage.structure.element.Element.__nonzero__ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/structure/element.c:8867)
  File "sage/structure/element.pyx", line 1005, in 
sage.structure.element.Element.__richcmp__ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/structure/element.c:9689)
  File "sage/structure/element.pyx", line 1040, in 
sage.structure.element.Element._richcmp_ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/structure/element.c:9870)
  File "sage/rings/real_lazy.pyx", line 699, in 
sage.rings.real_lazy.LazyFieldElement._cmp_ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/real_lazy.c:8629)
  File "sage/rings/real_lazy.pyx", line 771, in 
sage.rings.real_lazy.LazyFieldElement.approx 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/real_lazy.c:9310)
  File "sage/rings/real_lazy.pyx", line 1638, in 
sage.rings.real_lazy.LazyAlgebraic.eval 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/real_lazy.c:17724)
  File "sage/rings/polynomial/polynomial_element.pyx", line 6496, in 
sage.rings.polynomial.polynomial_element.Polynomial.roots 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/polynomial/polynomial_element.c:54070)
  File 
"/home/stottmeister/downloads/sage-7.1/local/lib/python2.7/site-packages/sage/rings/polynomial/complex_roots.py",
 line 258, in complex_roots
    rts = cfac.roots(multiplicities=False)
  File "sage/rings/polynomial/polynomial_element.pyx", line 6421, in 
sage.rings.polynomial.polynomial_element.Polynomial.roots 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/polynomial/polynomial_element.c:51904)
  File "sage/rings/polynomial/polynomial_element.pyx", line 5326, in 
sage.rings.polynomial.polynomial_element.Polynomial._pari_ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/polynomial/polynomial_element.c:46962)
  File "sage/rings/polynomial/polynomial_element.pyx", line 5379, in 
sage.rings.polynomial.polynomial_element.Polynomial._pari_with_name 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/polynomial/polynomial_element.c:47464)
  File "sage/rings/complex_number.pyx", line 575, in 
sage.rings.complex_number.ComplexNumber._pari_ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/complex_number.c:6870)
  File "sage/rings/real_mpfr.pyx", line 3108, in 
sage.rings.real_mpfr.RealNumber._pari_ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/real_mpfr.c:22176)
  File "src/cysignals/signals.pyx", line 108, in 
cysignals.signals.sig_raise_exception (build/src/cysignals/signals.c:1342)
cysignals.signals.SignalError: Segmentation fault
Traceback (most recent call last):
  File "/home/stottmeister/downloads/sage-7.1/local/lib/python/runpy.py", line 
151, in _run_module_as_main
    mod_name, loader, code, fname = _get_module_details(mod_name)
  File "/home/stottmeister/downloads/sage-7.1/local/lib/python/runpy.py", line 
109, in _get_module_details
    return _get_module_details(pkg_main_name)
  File "/home/stottmeister/downloads/sage-7.1/local/lib/python/runpy.py", line 
101, in _get_module_details
    loader = get_loader(mod_name)
  File "/home/stottmeister/downloads/sage-7.1/local/lib/python/pkgutil.py", 
line 464, in get_loader
    return find_loader(fullname)
  File "/home/stottmeister/downloads/sage-7.1/local/lib/python/pkgutil.py", 
line 474, in find_loader
    for importer in iter_importers(fullname):
  File "/home/stottmeister/downloads/sage-7.1/local/lib/python/pkgutil.py", 
line 430, in iter_importers
    __import__(pkg)
  File 
"/home/stottmeister/downloads/sage-7.1/local/lib/python2.7/site-packages/sage_setup/docbuild/__init__.py",
 line 22, in <module>
    import sage.all
  File 
"/home/stottmeister/downloads/sage-7.1/local/lib/python2.7/site-packages/sage/all.py",
 line 105, in <module>
    import sage.symbolic.pynac
  File "sage/symbolic/pynac.pyx", line 2371, in init sage.symbolic.pynac 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/symbolic/pynac.cpp:28292)
  File "sage/symbolic/pynac.pyx", line 2257, in 
sage.symbolic.pynac.init_pynac_I 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/symbolic/pynac.cpp:24698)
  File 
"/home/stottmeister/downloads/sage-7.1/local/lib/python2.7/site-packages/sage/rings/number_field/number_field.py",
 line 898, in QuadraticField
    return NumberField(f, name, check=False, embedding=embedding, 
latex_name=latex_name, **args)
  File 
"/home/stottmeister/downloads/sage-7.1/local/lib/python2.7/site-packages/sage/rings/number_field/number_field.py",
 line 511, in NumberField
    return NumberField_version2(polynomial=polynomial, name=name, check=check, 
embedding=embedding, latex_name=latex_name, 
assume_disc_small=assume_disc_small, maximize_at_primes=maximize_at_primes, 
structure=structure)
  File "sage/structure/factory.pyx", line 363, in 
sage.structure.factory.UniqueFactory.__call__ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/structure/factory.c:1550)
  File "sage/structure/factory.pyx", line 406, in 
sage.structure.factory.UniqueFactory.get_object 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/structure/factory.c:1905)
  File 
"/home/stottmeister/downloads/sage-7.1/local/lib/python2.7/site-packages/sage/rings/number_field/number_field.py",
 line 633, in create_object
    return NumberField_quadratic(polynomial, name, latex_name, check, 
embedding, assume_disc_small=assume_disc_small, 
maximize_at_primes=maximize_at_primes, structure=structure)
  File 
"/home/stottmeister/downloads/sage-7.1/local/lib/python2.7/site-packages/sage/rings/number_field/number_field.py",
 line 10129, in __init__
    self._standard_embedding = CDF.has_coerce_map_from(self) and 
CDF(rootD).imag() > 0
  File "sage/rings/complex_double.pyx", line 333, in 
sage.rings.complex_double.ComplexDoubleField_class.__call__ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/complex_double.c:5300)
  File "sage/structure/parent.pyx", line 1111, in 
sage.structure.parent.Parent.__call__ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/structure/parent.c:9828)
  File "sage/categories/map.pyx", line 1691, in 
sage.categories.map.FormalCompositeMap._call_ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/categories/map.c:11323)
  File "sage/rings/number_field/number_field_morphisms.pyx", line 124, in 
sage.rings.number_field.number_field_morphisms.NumberFieldEmbedding._call_ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/number_field/number_field_morphisms.c:3111)
  File "sage/rings/number_field/number_field_morphisms.pyx", line 135, in 
sage.rings.number_field.number_field_morphisms.NumberFieldEmbedding._call_ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/number_field/number_field_morphisms.c:3046)
  File "sage/rings/polynomial/polynomial_rational_flint.pyx", line 497, in 
sage.rings.polynomial.polynomial_rational_flint.Polynomial_rational_flint.__call__
 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/polynomial/polynomial_rational_flint.cpp:6926)
  File "sage/rings/polynomial/polynomial_element.pyx", line 733, in 
sage.rings.polynomial.polynomial_element.Polynomial.__call__ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/polynomial/polynomial_element.c:8438)
  File "sage/structure/element.pyx", line 880, in 
sage.structure.element.Element.is_zero 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/structure/element.c:8934)
  File "sage/structure/element.pyx", line 866, in 
sage.structure.element.Element.__nonzero__ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/structure/element.c:8867)
  File "sage/structure/element.pyx", line 1005, in 
sage.structure.element.Element.__richcmp__ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/structure/element.c:9689)
  File "sage/structure/element.pyx", line 1040, in 
sage.structure.element.Element._richcmp_ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/structure/element.c:9870)
  File "sage/rings/real_lazy.pyx", line 699, in 
sage.rings.real_lazy.LazyFieldElement._cmp_ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/real_lazy.c:8629)
  File "sage/rings/real_lazy.pyx", line 771, in 
sage.rings.real_lazy.LazyFieldElement.approx 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/real_lazy.c:9310)
  File "sage/rings/real_lazy.pyx", line 1638, in 
sage.rings.real_lazy.LazyAlgebraic.eval 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/real_lazy.c:17724)
  File "sage/rings/polynomial/polynomial_element.pyx", line 6496, in 
sage.rings.polynomial.polynomial_element.Polynomial.roots 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/polynomial/polynomial_element.c:54070)
  File 
"/home/stottmeister/downloads/sage-7.1/local/lib/python2.7/site-packages/sage/rings/polynomial/complex_roots.py",
 line 258, in complex_roots
    rts = cfac.roots(multiplicities=False)
  File "sage/rings/polynomial/polynomial_element.pyx", line 6421, in 
sage.rings.polynomial.polynomial_element.Polynomial.roots 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/polynomial/polynomial_element.c:51904)
  File "sage/rings/polynomial/polynomial_element.pyx", line 5326, in 
sage.rings.polynomial.polynomial_element.Polynomial._pari_ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/polynomial/polynomial_element.c:46962)
  File "sage/rings/polynomial/polynomial_element.pyx", line 5379, in 
sage.rings.polynomial.polynomial_element.Polynomial._pari_with_name 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/polynomial/polynomial_element.c:47464)
  File "sage/rings/complex_number.pyx", line 575, in 
sage.rings.complex_number.ComplexNumber._pari_ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/complex_number.c:6870)
  File "sage/rings/real_mpfr.pyx", line 3108, in 
sage.rings.real_mpfr.RealNumber._pari_ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/real_mpfr.c:22176)
  File "src/cysignals/signals.pyx", line 108, in 
cysignals.signals.sig_raise_exception (build/src/cysignals/signals.c:1342)
cysignals.signals.SignalError: Segmentation fault
Traceback (most recent call last):
  File "/home/stottmeister/downloads/sage-7.1/local/lib/python/runpy.py", line 
151, in _run_module_as_main
    mod_name, loader, code, fname = _get_module_details(mod_name)
  File "/home/stottmeister/downloads/sage-7.1/local/lib/python/runpy.py", line 
109, in _get_module_details
    return _get_module_details(pkg_main_name)
  File "/home/stottmeister/downloads/sage-7.1/local/lib/python/runpy.py", line 
101, in _get_module_details
    loader = get_loader(mod_name)
  File "/home/stottmeister/downloads/sage-7.1/local/lib/python/pkgutil.py", 
line 464, in get_loader
    return find_loader(fullname)
  File "/home/stottmeister/downloads/sage-7.1/local/lib/python/pkgutil.py", 
line 474, in find_loader
    for importer in iter_importers(fullname):
  File "/home/stottmeister/downloads/sage-7.1/local/lib/python/pkgutil.py", 
line 430, in iter_importers
    __import__(pkg)
  File 
"/home/stottmeister/downloads/sage-7.1/local/lib/python2.7/site-packages/sage_setup/docbuild/__init__.py",
 line 22, in <module>
    import sage.all
  File 
"/home/stottmeister/downloads/sage-7.1/local/lib/python2.7/site-packages/sage/all.py",
 line 105, in <module>
    import sage.symbolic.pynac
  File "sage/symbolic/pynac.pyx", line 2371, in init sage.symbolic.pynac 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/symbolic/pynac.cpp:28292)
  File "sage/symbolic/pynac.pyx", line 2257, in 
sage.symbolic.pynac.init_pynac_I 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/symbolic/pynac.cpp:24698)
  File 
"/home/stottmeister/downloads/sage-7.1/local/lib/python2.7/site-packages/sage/rings/number_field/number_field.py",
 line 898, in QuadraticField
    return NumberField(f, name, check=False, embedding=embedding, 
latex_name=latex_name, **args)
  File 
"/home/stottmeister/downloads/sage-7.1/local/lib/python2.7/site-packages/sage/rings/number_field/number_field.py",
 line 511, in NumberField
    return NumberField_version2(polynomial=polynomial, name=name, check=check, 
embedding=embedding, latex_name=latex_name, 
assume_disc_small=assume_disc_small, maximize_at_primes=maximize_at_primes, 
structure=structure)
  File "sage/structure/factory.pyx", line 363, in 
sage.structure.factory.UniqueFactory.__call__ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/structure/factory.c:1550)
  File "sage/structure/factory.pyx", line 406, in 
sage.structure.factory.UniqueFactory.get_object 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/structure/factory.c:1905)
  File 
"/home/stottmeister/downloads/sage-7.1/local/lib/python2.7/site-packages/sage/rings/number_field/number_field.py",
 line 633, in create_object
    return NumberField_quadratic(polynomial, name, latex_name, check, 
embedding, assume_disc_small=assume_disc_small, 
maximize_at_primes=maximize_at_primes, structure=structure)
  File 
"/home/stottmeister/downloads/sage-7.1/local/lib/python2.7/site-packages/sage/rings/number_field/number_field.py",
 line 10129, in __init__
    self._standard_embedding = CDF.has_coerce_map_from(self) and 
CDF(rootD).imag() > 0
  File "sage/rings/complex_double.pyx", line 333, in 
sage.rings.complex_double.ComplexDoubleField_class.__call__ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/complex_double.c:5300)
  File "sage/structure/parent.pyx", line 1111, in 
sage.structure.parent.Parent.__call__ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/structure/parent.c:9828)
  File "sage/categories/map.pyx", line 1691, in 
sage.categories.map.FormalCompositeMap._call_ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/categories/map.c:11323)
  File "sage/rings/number_field/number_field_morphisms.pyx", line 124, in 
sage.rings.number_field.number_field_morphisms.NumberFieldEmbedding._call_ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/number_field/number_field_morphisms.c:3111)
  File "sage/rings/number_field/number_field_morphisms.pyx", line 135, in 
sage.rings.number_field.number_field_morphisms.NumberFieldEmbedding._call_ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/number_field/number_field_morphisms.c:3046)
  File "sage/rings/polynomial/polynomial_rational_flint.pyx", line 497, in 
sage.rings.polynomial.polynomial_rational_flint.Polynomial_rational_flint.__call__
 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/polynomial/polynomial_rational_flint.cpp:6926)
  File "sage/rings/polynomial/polynomial_element.pyx", line 733, in 
sage.rings.polynomial.polynomial_element.Polynomial.__call__ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/polynomial/polynomial_element.c:8438)
  File "sage/structure/element.pyx", line 880, in 
sage.structure.element.Element.is_zero 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/structure/element.c:8934)
  File "sage/structure/element.pyx", line 866, in 
sage.structure.element.Element.__nonzero__ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/structure/element.c:8867)
  File "sage/structure/element.pyx", line 1005, in 
sage.structure.element.Element.__richcmp__ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/structure/element.c:9689)
  File "sage/structure/element.pyx", line 1040, in 
sage.structure.element.Element._richcmp_ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/structure/element.c:9870)
  File "sage/rings/real_lazy.pyx", line 699, in 
sage.rings.real_lazy.LazyFieldElement._cmp_ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/real_lazy.c:8629)
  File "sage/rings/real_lazy.pyx", line 771, in 
sage.rings.real_lazy.LazyFieldElement.approx 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/real_lazy.c:9310)
  File "sage/rings/real_lazy.pyx", line 1638, in 
sage.rings.real_lazy.LazyAlgebraic.eval 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/real_lazy.c:17724)
  File "sage/rings/polynomial/polynomial_element.pyx", line 6496, in 
sage.rings.polynomial.polynomial_element.Polynomial.roots 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/polynomial/polynomial_element.c:54070)
  File 
"/home/stottmeister/downloads/sage-7.1/local/lib/python2.7/site-packages/sage/rings/polynomial/complex_roots.py",
 line 258, in complex_roots
    rts = cfac.roots(multiplicities=False)
  File "sage/rings/polynomial/polynomial_element.pyx", line 6421, in 
sage.rings.polynomial.polynomial_element.Polynomial.roots 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/polynomial/polynomial_element.c:51904)
  File "sage/rings/polynomial/polynomial_element.pyx", line 5326, in 
sage.rings.polynomial.polynomial_element.Polynomial._pari_ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/polynomial/polynomial_element.c:46962)
  File "sage/rings/polynomial/polynomial_element.pyx", line 5379, in 
sage.rings.polynomial.polynomial_element.Polynomial._pari_with_name 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/polynomial/polynomial_element.c:47464)
  File "sage/rings/complex_number.pyx", line 575, in 
sage.rings.complex_number.ComplexNumber._pari_ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/complex_number.c:6870)
  File "sage/rings/real_mpfr.pyx", line 3108, in 
sage.rings.real_mpfr.RealNumber._pari_ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/real_mpfr.c:22176)
  File "src/cysignals/signals.pyx", line 108, in 
cysignals.signals.sig_raise_exception (build/src/cysignals/signals.c:1342)
cysignals.signals.SignalError: Segmentation fault
Traceback (most recent call last):
  File "/home/stottmeister/downloads/sage-7.1/local/lib/python/runpy.py", line 
151, in _run_module_as_main
    mod_name, loader, code, fname = _get_module_details(mod_name)
  File "/home/stottmeister/downloads/sage-7.1/local/lib/python/runpy.py", line 
109, in _get_module_details
    return _get_module_details(pkg_main_name)
  File "/home/stottmeister/downloads/sage-7.1/local/lib/python/runpy.py", line 
101, in _get_module_details
    loader = get_loader(mod_name)
  File "/home/stottmeister/downloads/sage-7.1/local/lib/python/pkgutil.py", 
line 464, in get_loader
    return find_loader(fullname)
  File "/home/stottmeister/downloads/sage-7.1/local/lib/python/pkgutil.py", 
line 474, in find_loader
    for importer in iter_importers(fullname):
  File "/home/stottmeister/downloads/sage-7.1/local/lib/python/pkgutil.py", 
line 430, in iter_importers
    __import__(pkg)
  File 
"/home/stottmeister/downloads/sage-7.1/local/lib/python2.7/site-packages/sage_setup/docbuild/__init__.py",
 line 22, in <module>
    import sage.all
  File 
"/home/stottmeister/downloads/sage-7.1/local/lib/python2.7/site-packages/sage/all.py",
 line 105, in <module>
    import sage.symbolic.pynac
  File "sage/symbolic/pynac.pyx", line 2371, in init sage.symbolic.pynac 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/symbolic/pynac.cpp:28292)
  File "sage/symbolic/pynac.pyx", line 2257, in 
sage.symbolic.pynac.init_pynac_I 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/symbolic/pynac.cpp:24698)
  File 
"/home/stottmeister/downloads/sage-7.1/local/lib/python2.7/site-packages/sage/rings/number_field/number_field.py",
 line 898, in QuadraticField
    return NumberField(f, name, check=False, embedding=embedding, 
latex_name=latex_name, **args)
  File 
"/home/stottmeister/downloads/sage-7.1/local/lib/python2.7/site-packages/sage/rings/number_field/number_field.py",
 line 511, in NumberField
    return NumberField_version2(polynomial=polynomial, name=name, check=check, 
embedding=embedding, latex_name=latex_name, 
assume_disc_small=assume_disc_small, maximize_at_primes=maximize_at_primes, 
structure=structure)
  File "sage/structure/factory.pyx", line 363, in 
sage.structure.factory.UniqueFactory.__call__ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/structure/factory.c:1550)
  File "sage/structure/factory.pyx", line 406, in 
sage.structure.factory.UniqueFactory.get_object 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/structure/factory.c:1905)
  File 
"/home/stottmeister/downloads/sage-7.1/local/lib/python2.7/site-packages/sage/rings/number_field/number_field.py",
 line 633, in create_object
    return NumberField_quadratic(polynomial, name, latex_name, check, 
embedding, assume_disc_small=assume_disc_small, 
maximize_at_primes=maximize_at_primes, structure=structure)
  File 
"/home/stottmeister/downloads/sage-7.1/local/lib/python2.7/site-packages/sage/rings/number_field/number_field.py",
 line 10129, in __init__
    self._standard_embedding = CDF.has_coerce_map_from(self) and 
CDF(rootD).imag() > 0
  File "sage/rings/complex_double.pyx", line 333, in 
sage.rings.complex_double.ComplexDoubleField_class.__call__ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/complex_double.c:5300)
  File "sage/structure/parent.pyx", line 1111, in 
sage.structure.parent.Parent.__call__ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/structure/parent.c:9828)
  File "sage/categories/map.pyx", line 1691, in 
sage.categories.map.FormalCompositeMap._call_ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/categories/map.c:11323)
  File "sage/rings/number_field/number_field_morphisms.pyx", line 124, in 
sage.rings.number_field.number_field_morphisms.NumberFieldEmbedding._call_ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/number_field/number_field_morphisms.c:3111)
  File "sage/rings/number_field/number_field_morphisms.pyx", line 135, in 
sage.rings.number_field.number_field_morphisms.NumberFieldEmbedding._call_ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/number_field/number_field_morphisms.c:3046)
  File "sage/rings/polynomial/polynomial_rational_flint.pyx", line 497, in 
sage.rings.polynomial.polynomial_rational_flint.Polynomial_rational_flint.__call__
 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/polynomial/polynomial_rational_flint.cpp:6926)
  File "sage/rings/polynomial/polynomial_element.pyx", line 733, in 
sage.rings.polynomial.polynomial_element.Polynomial.__call__ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/polynomial/polynomial_element.c:8438)
  File "sage/structure/element.pyx", line 880, in 
sage.structure.element.Element.is_zero 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/structure/element.c:8934)
  File "sage/structure/element.pyx", line 866, in 
sage.structure.element.Element.__nonzero__ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/structure/element.c:8867)
  File "sage/structure/element.pyx", line 1005, in 
sage.structure.element.Element.__richcmp__ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/structure/element.c:9689)
  File "sage/structure/element.pyx", line 1040, in 
sage.structure.element.Element._richcmp_ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/structure/element.c:9870)
  File "sage/rings/real_lazy.pyx", line 699, in 
sage.rings.real_lazy.LazyFieldElement._cmp_ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/real_lazy.c:8629)
  File "sage/rings/real_lazy.pyx", line 771, in 
sage.rings.real_lazy.LazyFieldElement.approx 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/real_lazy.c:9310)
  File "sage/rings/real_lazy.pyx", line 1638, in 
sage.rings.real_lazy.LazyAlgebraic.eval 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/real_lazy.c:17724)
  File "sage/rings/polynomial/polynomial_element.pyx", line 6496, in 
sage.rings.polynomial.polynomial_element.Polynomial.roots 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/polynomial/polynomial_element.c:54070)
  File 
"/home/stottmeister/downloads/sage-7.1/local/lib/python2.7/site-packages/sage/rings/polynomial/complex_roots.py",
 line 258, in complex_roots
    rts = cfac.roots(multiplicities=False)
  File "sage/rings/polynomial/polynomial_element.pyx", line 6421, in 
sage.rings.polynomial.polynomial_element.Polynomial.roots 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/polynomial/polynomial_element.c:51904)
  File "sage/rings/polynomial/polynomial_element.pyx", line 5326, in 
sage.rings.polynomial.polynomial_element.Polynomial._pari_ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/polynomial/polynomial_element.c:46962)
  File "sage/rings/polynomial/polynomial_element.pyx", line 5379, in 
sage.rings.polynomial.polynomial_element.Polynomial._pari_with_name 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/polynomial/polynomial_element.c:47464)
  File "sage/rings/complex_number.pyx", line 575, in 
sage.rings.complex_number.ComplexNumber._pari_ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/complex_number.c:6870)
  File "sage/rings/real_mpfr.pyx", line 3108, in 
sage.rings.real_mpfr.RealNumber._pari_ 
(/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/real_mpfr.c:22176)
  File "src/cysignals/signals.pyx", line 108, in 
cysignals.signals.sig_raise_exception (build/src/cysignals/signals.c:1342)
cysignals.signals.SignalError: Segmentation fault

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