Hello, My apologies for not being able to get back sooner. I was working on a separate ticket this week. And there were some compile errors after Sage upgraded to 7.3beta6. I've fixed those and pushed the changes. Sage now builds and running Sage allows access to the functionalities in the original patch that were already working/fixed. However, before I can move on to fixing the pending ones from last week, I am suddenly getting weird segfault errors while running doctests. i.e. when I do ``./sage -t src/sage/rings/polynomial/skew_polynomial_element.pyx``, I get the following output. What changed in the latest update that has caused this and how can I fix it?
too few successful tests, not using stored timings > Running doctests with ID 2016-07-07-14-07-44-39349bdf. > Git branch: fix_skew_polynomials_patch > Using --optional=mpir,python2,sage > Doctesting 1 file. > sage -t src/sage/rings/polynomial/skew_polynomial_element.pyx > ********************************************************************** > File "src/sage/rings/polynomial/skew_polynomial_element.pyx", line 100, in > sage.rings.polynomial.skew_polynomial_element > Failed example: > q,r = c.quo_rem(b,side=Left) > Expected: > Traceback (most recent call last): > ... > NotImplementedError > Got: > <BLANKLINE> > Traceback (most recent call last): > File > "/home/arpit/Documents/GSOC_16/sage/local/lib/python2.7/site-packages/sage/doctest/forker.py", > > line 498, in _run > self.compile_and_execute(example, compiler, test.globs) > File > "/home/arpit/Documents/GSOC_16/sage/local/lib/python2.7/site-packages/sage/doctest/forker.py", > > line 861, in compile_and_execute > exec(compiled, globs) > File "<doctest sage.rings.polynomial.skew_polynomial_element[19]>", > line 1, in <module> > q,r = c.quo_rem(b,side=Left) > File "sage/rings/polynomial/skew_polynomial_element.pyx", line 1232, > in sage.rings.polynomial.skew_polynomial_element.SkewPolynomial.quo_rem > (/home/arpit/Documents/GSOC_16/sage/src/build/cythonized/sage/rings/polynomial/skew_polynomial_element.c:11397) > return self.lquo_rem(other) > File "sage/rings/polynomial/skew_polynomial_element.pyx", line 1092, > in sage.rings.polynomial.skew_polynomial_element.SkewPolynomial.lquo_rem > (/home/arpit/Documents/GSOC_16/sage/src/build/cythonized/sage/rings/polynomial/skew_polynomial_element.c:10375) > c = parent.twist_map(-db)(inv*a[i+db]) > File > "/home/arpit/Documents/GSOC_16/sage/local/lib/python2.7/site-packages/sage/rings/polynomial/skew_polynomial_ring.py", > > line 607, in twist_map > map = self._map**n > File "sage/categories/map.pyx", line 1264, in > sage.categories.map.Map.__pow__ > (/home/arpit/Documents/GSOC_16/sage/src/build/cythonized/sage/categories/map.c:9103) > return generic_power(self, n) > File "sage/structure/element.pyx", line 3496, in > sage.structure.element.generic_power > (/home/arpit/Documents/GSOC_16/sage/src/build/cythonized/sage/structure/element.c:27116) > return generic_power_c(a,n,one) > File "sage/structure/element.pyx", line 3529, in > sage.structure.element.generic_power_c > (/home/arpit/Documents/GSOC_16/sage/src/build/cythonized/sage/structure/element.c:27789) > a = ~a > TypeError: bad operand type for unary ~: > 'sage.rings.morphism.RingHomomorphism_im_gens' > Killed due to segmentation fault > ********************************************************************** > Tests run before process (pid=13179) failed: > sage: R.<t> = ZZ[] ## line 19 ## > sage: sigma = R.hom([t+1]) ## line 20 ## > sage: S.<x> = R['x',sigma]; S ## line 21 ## > Skew Polynomial Ring in x over Univariate Polynomial Ring in t over > Integer Ring twisted by t |--> t + 1 > sage: a = t + x + 1; a ## line 26 ## > x + t + 1 > sage: b = S([t^2,t+1,1]); b ## line 28 ## > x^2 + (t + 1)*x + t^2 > sage: c = S.random_element(degree=3,monic=True); c ## line 30 ## > x^3 + (-95*t^2 + t + 2)*x^2 + (-t^2 + t)*x + 2*t - 8 > sage: a + b ## line 35 ## > x^2 + (t + 2)*x + t^2 + t + 1 > sage: a - b ## line 37 ## > -x^2 - t*x - t^2 + t + 1 > sage: a * b ## line 40 ## > x^3 + (2*t + 3)*x^2 + (2*t^2 + 4*t + 2)*x + t^3 + t^2 > sage: b * a ## line 42 ## > x^3 + (2*t + 4)*x^2 + (2*t^2 + 3*t + 2)*x + t^3 + t^2 > sage: a * b == b * a ## line 44 ## > False > sage: b^2 ## line 47 ## > x^4 + (2*t + 4)*x^3 + (3*t^2 + 7*t + 6)*x^2 + (2*t^3 + 4*t^2 + 3*t + 1)*x > + t^4 > sage: b^2 == b*b ## line 49 ## > True > sage: q,r = c.quo_rem(b) # default side is right ## line 80 ## > sage: q ## line 81 ## > x - 95*t^2 > sage: r ## line 83 ## > (95*t^3 + 93*t^2 - t - 1)*x + 95*t^4 + 2*t - 8 > sage: c == q*b + r ## line 85 ## > True > sage: q == c // b ## line 91 ## > True > sage: r == c % b ## line 93 ## > True > sage: q,r = c.quo_rem(b,side=Left) ## line 100 ## > sage: k.<t> = GF(5^3) ## line 107 ## > sage: Frob = k.frobenius_endomorphism() ## line 108 ## > sage: S.<x> = k['x',Frob] ## line 109 ## > sage: a = x^4 + (4*t + 1)*x^3 + (t^2 + 3*t + 3)*x^2 + (3*t^2 + 2*t + 2)*x > + 3*t^2 + 3*t + 1 ## line 110 ## > ------------------------------------------------------------------------ > > /home/arpit/Documents/GSOC_16/sage/local/lib/python2.7/site-packages/cysignals/signals.so(+0x4525)[0x7f64f35b6525] > > /home/arpit/Documents/GSOC_16/sage/local/lib/python2.7/site-packages/cysignals/signals.so(+0x4575)[0x7f64f35b6575] > > /home/arpit/Documents/GSOC_16/sage/local/lib/python2.7/site-packages/cysignals/signals.so(+0x72a7)[0x7f64f35b92a7] > /lib/x86_64-linux-gnu/libpthread.so.0(+0x10330)[0x7f64f8402330] > > /home/arpit/Documents/GSOC_16/sage/local/lib/python2.7/site-packages/sage/rings/polynomial/skew_polynomial_element.so(+0x3370b)[0x7f648591470b] > > /home/arpit/Documents/GSOC_16/sage/local/lib/python2.7/site-packages/sage/structure/element.so(+0x30fa0)[0x7f64ed67afa0] > > /home/arpit/Documents/GSOC_16/sage/local/lib/python2.7/site-packages/sage/rings/polynomial/skew_polynomial_element.so(+0x9d8c)[0x7f64858ead8c] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(PyObject_RichCompare+0x129)[0x7f64f86b0269] > > /home/arpit/Documents/GSOC_16/sage/local/lib/python2.7/site-packages/sage/rings/morphism.so(+0x260c3)[0x7f649a9c00c3] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(+0xbcb2f)[0x7f64f86ccb2f] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(PyObject_Call+0x43)[0x7f64f8662bc3] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x3b2e)[0x7f64f871724e] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x830)[0x7f64f871a560] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(+0x8449c)[0x7f64f869449c] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(PyObject_Call+0x43)[0x7f64f8662bc3] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(+0x615dd)[0x7f64f86715dd] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(PyObject_Call+0x43)[0x7f64f8662bc3] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(+0xbdd75)[0x7f64f86cdd75] > > /home/arpit/Documents/GSOC_16/sage/local/lib/python2.7/site-packages/sage/rings/morphism.so(+0x6f21)[0x7f649a9a0f21] > > /home/arpit/Documents/GSOC_16/sage/local/lib/python2.7/site-packages/sage/rings/morphism.so(+0x2206d)[0x7f649a9bc06d] > > /home/arpit/Documents/GSOC_16/sage/local/lib/python2.7/site-packages/sage/categories/map.so(+0x9241)[0x7f64ed40c241] > > /home/arpit/Documents/GSOC_16/sage/local/lib/python2.7/site-packages/sage/categories/map.so(+0x1521f)[0x7f64ed41821f] > > /home/arpit/Documents/GSOC_16/sage/local/lib/python2.7/site-packages/sage/categories/map.so(+0xff85)[0x7f64ed412f85] > > /home/arpit/Documents/GSOC_16/sage/local/lib/python2.7/site-packages/sage/categories/map.so(+0x1332b)[0x7f64ed41632b] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(PyNumber_Multiply+0xbb)[0x7f64f866050b] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x2965)[0x7f64f8716085] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x830)[0x7f64f871a560] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(+0x8449c)[0x7f64f869449c] > > /home/arpit/Documents/GSOC_16/sage/local/lib/python2.7/site-packages/sage/structure/parent_old.so(+0xb105)[0x7f64ef281105] > > /home/arpit/Documents/GSOC_16/sage/local/lib/python2.7/site-packages/sage/structure/parent.so(+0x31c5a)[0x7f64ef035c5a] > > /home/arpit/Documents/GSOC_16/sage/local/lib/python2.7/site-packages/sage/structure/parent.so(+0x3531e)[0x7f64ef03931e] > > /home/arpit/Documents/GSOC_16/sage/local/lib/python2.7/site-packages/sage/structure/parent.so(+0x46dff)[0x7f64ef04adff] > > /home/arpit/Documents/GSOC_16/sage/local/lib/python2.7/site-packages/sage/structure/parent.so(+0x4762e)[0x7f64ef04b62e] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x6494)[0x7f64f8719bb4] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x830)[0x7f64f871a560] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(+0x8449c)[0x7f64f869449c] > > /home/arpit/Documents/GSOC_16/sage/local/lib/python2.7/site-packages/sage/structure/coerce_actions.so(+0x5741)[0x7f64ec6e4741] > > /home/arpit/Documents/GSOC_16/sage/local/lib/python2.7/site-packages/sage/structure/coerce_actions.so(+0x18586)[0x7f64ec6f7586] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(+0xbcb2f)[0x7f64f86ccb2f] > > /home/arpit/Documents/GSOC_16/sage/local/lib/python2.7/site-packages/sage/structure/coerce_actions.so(+0x165a6)[0x7f64ec6f55a6] > > /home/arpit/Documents/GSOC_16/sage/local/lib/python2.7/site-packages/sage/structure/parent.so(+0xacd1)[0x7f64ef00ecd1] > > /home/arpit/Documents/GSOC_16/sage/local/lib/python2.7/site-packages/sage/structure/parent.so(+0x2b9b2)[0x7f64ef02f9b2] > > /home/arpit/Documents/GSOC_16/sage/local/lib/python2.7/site-packages/sage/structure/parent.so(+0x3eb29)[0x7f64ef042b29] > > /home/arpit/Documents/GSOC_16/sage/local/lib/python2.7/site-packages/sage/structure/coerce.so(+0x2c420)[0x7f64ec938420] > > /home/arpit/Documents/GSOC_16/sage/local/lib/python2.7/site-packages/sage/structure/coerce.so(+0xf4d2)[0x7f64ec91b4d2] > > /home/arpit/Documents/GSOC_16/sage/local/lib/python2.7/site-packages/sage/structure/coerce.so(+0x30f3f)[0x7f64ec93cf3f] > > /home/arpit/Documents/GSOC_16/sage/local/lib/python2.7/site-packages/sage/structure/element.so(+0xf4ad)[0x7f64ed6594ad] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(PyNumber_Multiply+0xbb)[0x7f64f866050b] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x2965)[0x7f64f8716085] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x830)[0x7f64f871a560] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(PyEval_EvalCode+0x19)[0x7f64f871a689] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x58de)[0x7f64f8718ffe] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x830)[0x7f64f871a560] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x5936)[0x7f64f8719056] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x830)[0x7f64f871a560] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x5936)[0x7f64f8719056] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x830)[0x7f64f871a560] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x5936)[0x7f64f8719056] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x830)[0x7f64f871a560] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(+0x8449c)[0x7f64f869449c] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(PyObject_Call+0x43)[0x7f64f8662bc3] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(+0x615dd)[0x7f64f86715dd] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(PyObject_Call+0x43)[0x7f64f8662bc3] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(+0xbdd75)[0x7f64f86cdd75] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(PyObject_Call+0x43)[0x7f64f8662bc3] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x3b2e)[0x7f64f871724e] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x830)[0x7f64f871a560] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x5936)[0x7f64f8719056] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x5a59)[0x7f64f8719179] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x830)[0x7f64f871a560] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(+0x8449c)[0x7f64f869449c] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(PyObject_Call+0x43)[0x7f64f8662bc3] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(+0x615dd)[0x7f64f86715dd] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(PyObject_Call+0x43)[0x7f64f8662bc3] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(+0xbdf8d)[0x7f64f86cdf8d] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(+0xbcb2f)[0x7f64f86ccb2f] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(PyObject_Call+0x43)[0x7f64f8662bc3] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x3b2e)[0x7f64f871724e] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x5a59)[0x7f64f8719179] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x830)[0x7f64f871a560] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x5936)[0x7f64f8719056] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x830)[0x7f64f871a560] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x5936)[0x7f64f8719056] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x830)[0x7f64f871a560] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x5936)[0x7f64f8719056] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x830)[0x7f64f871a560] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x5936)[0x7f64f8719056] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x830)[0x7f64f871a560] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x5936)[0x7f64f8719056] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x830)[0x7f64f871a560] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(PyEval_EvalCode+0x19)[0x7f64f871a689] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(PyRun_FileExFlags+0x8a)[0x7f64f873e45a] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(PyRun_SimpleFileExFlags+0xd7)[0x7f64f873f9e7] > > /home/arpit/Documents/GSOC_16/sage/local/lib/libpython2.7.so.1.0(Py_Main+0xc25)[0x7f64f8755bd5] > /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf5)[0x7f64f7941f45] > python[0x40072e] > ------------------------------------------------------------------------ > Attaching gdb to process id 13179. > > Saved trace to /home/arpit/.sage/crash_logs/crash_VcXzuj.log > ------------------------------------------------------------------------ > Unhandled SIGSEGV: A segmentation fault occurred. > This probably occurred because a *compiled* module has a bug > in it and is not properly wrapped with sig_on(), sig_off(). > Python will now terminate. > ------------------------------------------------------------------------ > > ********************************************************************** > ---------------------------------------------------------------------- > sage -t src/sage/rings/polynomial/skew_polynomial_element.pyx # Killed > due to segmentation fault > ---------------------------------------------------------------------- > Total time for all tests: 0.4 seconds > cpu time: 0.0 seconds > cumulative wall time: 0.0 seconds > -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at https://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
