On Mon, Sep 26, 2016 at 9:44 AM, Dima Pasechnik <dimp...@gmail.com> wrote:

>
>
> On Monday, September 26, 2016 at 2:22:51 AM UTC, Jonathan Bober wrote:
>>
>> I recompiled with gcc 6.1.0, and get the same segfault. I did a ./sage -i
>> gdb to get a better crash report, which is attached. I don't know if it is
>> useful. Also, it mentions some gcc 5.1.0 paths, which seems odd. I don't
>> know if that indicates that something is broken on my end.
>>
>
> I am mostly guessing, but mentioning gcc 5.1.0 in the log does sound to me
> as if your toolchain might be broken after update to gcc 6.1 (perhaps it's
> debugging versions of libs...)
>

No, I think I was confused and used the wrong installation of sage to
produce that crash report. Maybe I typed sage instead of ./sage. The
correct crash report is attached now.

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[New LWP 42725]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
To enable execution of this file add
	add-auto-load-safe-path /opt/gcc-6.1.0/lib64/libstdc++.so.6.0.22-gdb.py
line to your configuration file "/home/jb12407/.gdbinit".
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0x000000361e20f37d in waitpid () from /lib64/libpthread.so.0

Stack backtrace
---------------
No symbol table info available.
#1  0x00007f200ce23ef8 in print_enhanced_backtrace ()
    at build/src/cysignals/implementation.c:401
        parent_pid = 42675
        pid = <optimized out>
#2  0x00007f200ce246ca in sigdie (sig=sig@entry=11, 
    s=s@entry=0x7f200ce2d420 "Unhandled SIGSEGV: A segmentation fault occurred.") at build/src/cysignals/implementation.c:420
No locals.
#3  0x00007f200ce27267 in cysigs_signal_handler (sig=11)
    at build/src/cysignals/implementation.c:213
        inside = <optimized out>
#4  <signal handler called>
No symbol table info available.
#5  0x00007f2002133cb8 in daxpy_k ()
   from /data/home/jb12407/tmp/sage/local/lib/libopenblas.so.0
No symbol table info available.
#6  0x00007f2001f3f366 in trmv_kernel ()
   from /data/home/jb12407/tmp/sage/local/lib/libopenblas.so.0
No symbol table info available.
#7  0x00007f20020eee89 in exec_blas ()
   from /data/home/jb12407/tmp/sage/local/lib/libopenblas.so.0
No symbol table info available.
#8  0x00007f2001f3f6e8 in dtrmv_thread_NLU ()
   from /data/home/jb12407/tmp/sage/local/lib/libopenblas.so.0
No symbol table info available.
#9  0x00007f2001efe693 in dtrmv_ ()
   from /data/home/jb12407/tmp/sage/local/lib/libopenblas.so.0
No symbol table info available.
#10 0x00007f2002382c45 in dlahr2_ ()
   from /data/home/jb12407/tmp/sage/local/lib/libopenblas.so.0
No symbol table info available.
#11 0x00007f200234a5d8 in dgehrd_ ()
   from /data/home/jb12407/tmp/sage/local/lib/libopenblas.so.0
No symbol table info available.
#12 0x00007f2002344ecb in dgeev_ ()
   from /data/home/jb12407/tmp/sage/local/lib/libopenblas.so.0
No symbol table info available.
#13 0x00007f19581a4b27 in f2py_rout__flapack_dgeev (capi_self=<optimized out>, 
    capi_args=<optimized out>, capi_keywds=<optimized out>, 
    f2py_func=0x7f2002344a70 <dgeev_>)
    at build/src.linux-x86_64-2.7/build/src.linux-x86_64-2.7/scipy/linalg/_flapackmodule.c:24535
        capi_buildvalue = 0x0
        f2py_success = 1
        compute_vl = 0
        compute_vl_capi = 0x18e6170
        compute_vr = 0
        compute_vr_capi = 0x18e6170
        n = 500
        a = <optimized out>
        a_Dims = {500, 500}
        capi_a_tmp = 0x7f1f7274a490
        capi_a_intent = <optimized out>
        capi_overwrite_a = 0
        a_capi = 0x7f1f77bc0080
        wr = 0x46ca7d0
        wr_Dims = {500}
        capi_wr_tmp = 0x7f1f7274a440
        capi_wr_intent = 12
        wi = 0x465b400
        wi_Dims = {500}
        capi_wi_tmp = 0x7f1f7274a580
        capi_wi_intent = 12
        vl = 0x4a56ae0
        vl_Dims = {1, 500}
        capi_vl_tmp = 0x7f1f7274a530
        capi_vl_intent = 12
        ldvl = 1
        vr = <optimized out>
        vr_Dims = {1, 500}
        capi_vr_tmp = 0x7f1f7274a5d0
        capi_vr_intent = 12
        ldvr = 1
        work = 0x4ce6a40
        work_Dims = {17000}
        capi_work_tmp = 0x7f1f7274a4e0
        capi_work_intent = 24
        lwork = 17000
        lwork_capi = 0x7f200fefa498
        info = 0
        capi_kwlist = {0x7f19581ed439 "a", 0x7f19581ed558 "compute_vl", 
          0x7f19581ed563 "compute_vr", 0x7f19581ebe2a "lwork", 
          0x7f19581ed42f "overwrite_a", 0x0}
#14 0x00007f201a493183 in PyObject_Call (func=func@entry=0x7f1ffe37bf08, 
    arg=arg@entry=0x7f1f751211d0, kw=kw@entry=0x7f1f6a938168)
    at Objects/abstract.c:2529
        result = <optimized out>
        call = 0x7f19581dfe80 <fortran_call>
#15 0x00007f201a549042 in do_call (nk=<optimized out>, na=<optimized out>, 
    pp_stack=0x7ffcce5b5e00, func=0x7f1ffe37bf08) at Python/ceval.c:4253
        callargs = <optimized out>
        kwdict = <optimized out>
        result = 0x0
#16 call_function (oparg=<optimized out>, pp_stack=0x7ffcce5b5e00)
    at Python/ceval.c:4058
        func = 0x7f1ffe37bf08
        w = <optimized out>
        na = <optimized out>
        nk = <optimized out>
        n = <optimized out>
        pfunc = 0x49a2de8
        x = <optimized out>
#17 PyEval_EvalFrameEx (f=f@entry=0x49a2bc0, throwflag=throwflag@entry=0)
    at Python/ceval.c:2681
        sp = 0x49a2df0
        stack_pointer = <optimized out>
        next_instr = <optimized out>
        opcode = <optimized out>
        oparg = <optimized out>
        why = WHY_NOT
        err = 0
        x = <optimized out>
        v = <optimized out>
        w = <optimized out>
        u = <optimized out>
        t = <optimized out>
        stream = 0x0
        fastlocals = 0x49a2d38
        freevars = <optimized out>
        retval = <optimized out>
        tstate = <optimized out>
        co = <optimized out>
        instr_ub = -1
        instr_lb = 0
        instr_prev = -1
        first_instr = <optimized out>
        names = <optimized out>
        consts = <optimized out>
#18 0x00007f201a54c1dc in PyEval_EvalCodeEx (co=<optimized out>, 
    globals=<optimized out>, locals=locals@entry=0x0, args=<optimized out>, 
    argcount=argcount@entry=1, kws=0x4adc2c8, kwcount=5, defs=0x7f1f7280d4e0, 
    defcount=6, closure=0x0) at Python/ceval.c:3267
        f = 0x49a2bc0
        retval = 0x0
        fastlocals = 0x49a2d38
        freevars = 0x49a2de8
        tstate = 0x18ce0a0
        x = <optimized out>
        u = <optimized out>
#19 0x00007f201a54ade7 in fast_function (nk=<optimized out>, na=1, 
    n=<optimized out>, pp_stack=0x7ffcce5b5fd0, func=0x7f1f72811050)
    at Python/ceval.c:4131
        co = <optimized out>
        nd = <optimized out>
        globals = <optimized out>
        argdefs = <optimized out>
        d = <optimized out>
#20 call_function (oparg=<optimized out>, pp_stack=0x7ffcce5b5fd0)
    at Python/ceval.c:4056
        func = 0x7f1f72811050
        w = <optimized out>
        na = 1
        nk = <optimized out>
        n = <optimized out>
        pfunc = 0x4adc2b8
        x = <optimized out>
#21 PyEval_EvalFrameEx (f=f@entry=0x4adc120, throwflag=throwflag@entry=0)
    at Python/ceval.c:2681
        sp = 0x4adc318
        stack_pointer = <optimized out>
        next_instr = <optimized out>
        opcode = <optimized out>
        oparg = <optimized out>
        why = WHY_NOT
        err = 0
        x = <optimized out>
        v = <optimized out>
        w = <optimized out>
        u = <optimized out>
        t = <optimized out>
        stream = 0x0
        fastlocals = 0x4adc298
        freevars = <optimized out>
        retval = <optimized out>
        tstate = <optimized out>
        co = <optimized out>
        instr_ub = -1
        instr_lb = 0
        instr_prev = -1
        first_instr = <optimized out>
        names = <optimized out>
        consts = <optimized out>
#22 0x00007f201a54c1dc in PyEval_EvalCodeEx (co=<optimized out>, 
    globals=<optimized out>, locals=locals@entry=0x0, 
    args=args@entry=0x7f1f77b7e5e8, argcount=1, kws=kws@entry=0x0, kwcount=0, 
    defs=0x7f1f7280a2e8, defcount=3, closure=0x0) at Python/ceval.c:3267
        f = 0x4adc120
        retval = 0x0
        fastlocals = 0x4adc298
        freevars = 0x4adc2b8
        tstate = 0x18ce0a0
        x = <optimized out>
        u = <optimized out>
#23 0x00007f201a4c44cc in function_call (func=0x7f1f728111b8, 
    arg=0x7f1f77b7e5d0, kw=0x0) at Objects/funcobject.c:526
        result = <optimized out>
        argdefs = <optimized out>
        kwtuple = 0x0
        d = 0x7f1f7280a2e8
        k = 0x0
        nk = 0
        nd = 3
#24 0x00007f1959c799ed in __Pyx_PyObject_Call (kw=0x0, arg=0x7f1f77b7e5d0, 
    func=0x7f1f728111b8)
    at /data/home/jb12407/tmp/sage/src/build/cythonized/sage/matrix/matrix_double_dense.c:28972
        result = <optimized out>
        call = <optimized out>
#25 __Pyx__PyObject_CallOneArg (func=0x7f1f728111b8, arg=<optimized out>)
    at /data/home/jb12407/tmp/sage/src/build/cythonized/sage/matrix/matrix_double_dense.c:29292
        args = 0x7f1f77b7e5d0
#26 0x00007f1959cc3532 in __pyx_pf_4sage_6matrix_19matrix_double_dense_19Matrix_double_dense_30eigenvalues (__pyx_v_tol=0x7f201a80e820 <_Py_NoneStruct>, 
    __pyx_v_algorithm=0x7f201a2da870, __pyx_v_self=0x7f195c39e370)
    at /data/home/jb12407/tmp/sage/src/build/cythonized/sage/matrix/matrix_double_dense.c:10417
        __pyx_v_sage = 0x7f201a1637f8
        __pyx_v_multiplicity = <optimized out>
        __pyx_t_7 = 0x0
        __pyx_t_12 = <optimized out>
        __pyx_v_return_class = 0x7f200fe7e7d0
        __pyx_v_m = 0x0
        __pyx_v_avg = 0x0
        __pyx_t_8 = 0x0
        __pyx_t_9 = <optimized out>
        __pyx_t_14 = 0x0
        __pyx_v_d = 0x0
        __pyx_t_15 = <optimized out>
        __pyx_v_ev_group = 0x0
        __pyx_v_e = 0x0
        __pyx_t_16 = <optimized out>
        __pyx_v_evalues = 0x0
        __pyx_r = 0x0
        __pyx_t_1 = 0x0
        __pyx_t_17 = <optimized out>
        __pyx_v_location = 0x0
        __pyx_v_best_fit = 0x0
        __pyx_t_2 = <optimized out>
        __pyx_t_18 = <optimized out>
        __pyx_v_s = 0x0
        __pyx_t_3 = <optimized out>
        __pyx_v_i = <optimized out>
        __pyx_t_4 = 0x7f1f728111b8
        __pyx_v__ = 0x0
        __pyx_t_5 = 0x0
        __pyx_t_10 = 0x0
        __pyx_v_numpy = 0x7f1f7511e398
        __pyx_v_msg = 0x0
        __pyx_t_6 = 0x0
        __pyx_t_11 = 0x0
#27 __pyx_pw_4sage_6matrix_19matrix_double_dense_19Matrix_double_dense_31eigenvalues (__pyx_v_self=<optimized out>, __pyx_args=<optimized out>, 
    __pyx_kwds=<optimized out>)
    at /data/home/jb12407/tmp/sage/src/build/cythonized/sage/matrix/matrix_double_dense.c:9386
        __pyx_v_algorithm = <optimized out>
        __pyx_v_tol = <optimized out>
        __pyx_r = 0x0
#28 0x00007f201a54b619 in call_function (oparg=<optimized out>, 
    pp_stack=0x7ffcce5b6350) at Python/ceval.c:4035
        flags = <optimized out>
        tstate = 0x18ce0a0
        func = 0x7f1f751734d0
        w = <optimized out>
        na = <optimized out>
        nk = <optimized out>
        n = <optimized out>
        pfunc = 0x7f1f77bbcf20
        x = <optimized out>
#29 PyEval_EvalFrameEx (f=f@entry=0x7f1f77bbcda8, throwflag=throwflag@entry=0)
    at Python/ceval.c:2681
        sp = 0x7f1f77bbcf28
        stack_pointer = <optimized out>
        next_instr = <optimized out>
        opcode = <optimized out>
        oparg = <optimized out>
        why = WHY_NOT
        err = 0
        x = <optimized out>
        v = <optimized out>
        w = <optimized out>
        u = <optimized out>
        t = <optimized out>
        stream = 0x0
        fastlocals = 0x7f1f77bbcf20
        freevars = <optimized out>
        retval = <optimized out>
        tstate = <optimized out>
        co = <optimized out>
        instr_ub = -1
        instr_lb = 0
        instr_prev = -1
        first_instr = <optimized out>
        names = <optimized out>
        consts = <optimized out>
#30 0x00007f201a54c1dc in PyEval_EvalCodeEx (co=co@entry=0x7f1f751099b0, 
    globals=globals@entry=0x7f200f1dd7f8, locals=locals@entry=0x7f200f1dd7f8, 
    args=args@entry=0x0, argcount=argcount@entry=0, kws=kws@entry=0x0, 
    kwcount=0, defs=0x0, defcount=0, closure=0x0) at Python/ceval.c:3267
        f = 0x7f1f77bbcda8
        retval = 0x0
        fastlocals = 0x7f1f77bbcf20
        freevars = 0x7f1f77bbcf20
        tstate = 0x18ce0a0
        x = <optimized out>
        u = <optimized out>
#31 0x00007f201a54c2d9 in PyEval_EvalCode (co=co@entry=0x7f1f751099b0, 
    globals=globals@entry=0x7f200f1dd7f8, locals=locals@entry=0x7f200f1dd7f8)
    at Python/ceval.c:669
No locals.
#32 0x00007f201a54a4ab in exec_statement (locals=0x7f200f1dd7f8, 
    globals=0x7f200f1dd7f8, prog=0x7f1f751099b0, f=0x4629970)
    at Python/ceval.c:4732
        n = <optimized out>
        v = <optimized out>
        plain = 0
#33 PyEval_EvalFrameEx (f=f@entry=0x4629970, throwflag=throwflag@entry=0)
    at Python/ceval.c:1883
        stack_pointer = <optimized out>
        next_instr = <optimized out>
        opcode = <optimized out>
        oparg = <optimized out>
        why = WHY_NOT
        err = <optimized out>
        x = 0x7f200f1dd7f8
        v = 0x7f200f1dd7f8
        w = 0x7f200f1dd7f8
        u = 0x7f1f751099b0
        t = <optimized out>
        stream = 0x0
        fastlocals = 0x4629ae8
        freevars = <optimized out>
        retval = <optimized out>
        tstate = <optimized out>
        co = <optimized out>
        instr_ub = -1
        instr_lb = 0
        instr_prev = -1
        first_instr = <optimized out>
        names = <optimized out>
        consts = <optimized out>
#34 0x00007f201a54c1dc in PyEval_EvalCodeEx (co=<optimized out>, 
    globals=<optimized out>, locals=locals@entry=0x0, args=<optimized out>, 
    argcount=argcount@entry=3, kws=0x46d2ef8, kwcount=0, defs=0x7f2011ae4628, 
    defcount=1, closure=0x0) at Python/ceval.c:3267
        f = 0x4629970
        retval = 0x0
        fastlocals = 0x4629ae8
        freevars = 0x4629b30
        tstate = 0x18ce0a0
        x = <optimized out>
        u = <optimized out>
#35 0x00007f201a54ade7 in fast_function (nk=<optimized out>, na=3, 
    n=<optimized out>, pp_stack=0x7ffcce5b6700, func=0x7f200febc938)
    at Python/ceval.c:4131
        co = <optimized out>
        nd = <optimized out>
        globals = <optimized out>
        argdefs = <optimized out>
        d = <optimized out>
#36 call_function (oparg=<optimized out>, pp_stack=0x7ffcce5b6700)
    at Python/ceval.c:4056
        func = 0x7f200febc938
        w = <optimized out>
        na = 3
        nk = <optimized out>
        n = <optimized out>
        pfunc = 0x46d2ee0
        x = <optimized out>
#37 PyEval_EvalFrameEx (f=f@entry=0x46d2d00, throwflag=throwflag@entry=0)
    at Python/ceval.c:2681
        sp = 0x46d2ef8
        stack_pointer = <optimized out>
        next_instr = <optimized out>
        opcode = <optimized out>
        oparg = <optimized out>
        why = WHY_NOT
        err = 0
        x = <optimized out>
        v = <optimized out>
        w = <optimized out>
        u = <optimized out>
        t = <optimized out>
        stream = 0x0
        fastlocals = 0x46d2e78
        freevars = <optimized out>
        retval = <optimized out>
        tstate = <optimized out>
        co = <optimized out>
        instr_ub = -1
        instr_lb = 0
        instr_prev = -1
        first_instr = <optimized out>
        names = <optimized out>
        consts = <optimized out>
#38 0x00007f201a54c1dc in PyEval_EvalCodeEx (co=<optimized out>, 
    globals=<optimized out>, locals=locals@entry=0x0, args=<optimized out>, 
    argcount=argcount@entry=3, kws=0x21569d8, kwcount=3, defs=0x7f20129247e8, 
    defcount=3, closure=0x0) at Python/ceval.c:3267
        f = 0x46d2d00
        retval = 0x0
        fastlocals = 0x46d2e78
        freevars = 0x46d2ed8
        tstate = 0x18ce0a0
        x = <optimized out>
        u = <optimized out>
#39 0x00007f201a54ade7 in fast_function (nk=<optimized out>, na=3, 
    n=<optimized out>, pp_stack=0x7ffcce5b68d0, func=0x7f200febc8c0)
    at Python/ceval.c:4131
        co = <optimized out>
        nd = <optimized out>
        globals = <optimized out>
        argdefs = <optimized out>
        d = <optimized out>
#40 call_function (oparg=<optimized out>, pp_stack=0x7ffcce5b68d0)
    at Python/ceval.c:4056
        func = 0x7f200febc8c0
        w = <optimized out>
        na = 3
        nk = <optimized out>
        n = <optimized out>
        pfunc = 0x21569c0
        x = <optimized out>
#41 PyEval_EvalFrameEx (f=f@entry=0x21567a0, throwflag=throwflag@entry=0)
    at Python/ceval.c:2681
        sp = 0x2156a08
        stack_pointer = <optimized out>
        next_instr = <optimized out>
        opcode = <optimized out>
        oparg = <optimized out>
        why = WHY_NOT
        err = 0
        x = <optimized out>
        v = <optimized out>
        w = <optimized out>
        u = <optimized out>
        t = <optimized out>
        stream = 0x0
        fastlocals = 0x2156918
        freevars = <optimized out>
        retval = <optimized out>
        tstate = <optimized out>
        co = <optimized out>
        instr_ub = -1
        instr_lb = 0
        instr_prev = -1
        first_instr = <optimized out>
        names = <optimized out>
        consts = <optimized out>
#42 0x00007f201a54c1dc in PyEval_EvalCodeEx (co=<optimized out>, 
    globals=<optimized out>, locals=locals@entry=0x0, args=<optimized out>, 
    argcount=argcount@entry=2, kws=0x7f1f9f0f1790, kwcount=1, 
    defs=0x7f2011a89838, defcount=3, closure=0x0) at Python/ceval.c:3267
        f = 0x21567a0
        retval = 0x0
        fastlocals = 0x2156918
        freevars = 0x21569a0
        tstate = 0x18ce0a0
        x = <optimized out>
        u = <optimized out>
#43 0x00007f201a54ade7 in fast_function (nk=<optimized out>, na=2, 
    n=<optimized out>, pp_stack=0x7ffcce5b6aa0, func=0x7f200febc7d0)
    at Python/ceval.c:4131
        co = <optimized out>
        nd = <optimized out>
        globals = <optimized out>
        argdefs = <optimized out>
        d = <optimized out>
#44 call_function (oparg=<optimized out>, pp_stack=0x7ffcce5b6aa0)
    at Python/ceval.c:4056
        func = 0x7f200febc7d0
        w = <optimized out>
        na = 2
        nk = <optimized out>
        n = <optimized out>
        pfunc = 0x7f1f9f0f1780
        x = <optimized out>
#45 PyEval_EvalFrameEx (f=f@entry=0x7f1f9f0f15f0, throwflag=throwflag@entry=0)
    at Python/ceval.c:2681
        sp = 0x7f1f9f0f17a0
        stack_pointer = <optimized out>
        next_instr = <optimized out>
        opcode = <optimized out>
        oparg = <optimized out>
        why = WHY_NOT
        err = 0
        x = <optimized out>
        v = <optimized out>
        w = <optimized out>
        u = <optimized out>
        t = <optimized out>
        stream = 0x0
        fastlocals = 0x7f1f9f0f1768
        freevars = <optimized out>
        retval = <optimized out>
        tstate = <optimized out>
        co = <optimized out>
        instr_ub = -1
        instr_lb = 0
        instr_prev = -1
        first_instr = <optimized out>
        names = <optimized out>
        consts = <optimized out>
#46 0x00007f201a54c1dc in PyEval_EvalCodeEx (co=<optimized out>, 
    globals=<optimized out>, locals=locals@entry=0x0, args=<optimized out>, 
    argcount=argcount@entry=1, kws=0x7f1f77b6fec8, kwcount=0, 
    defs=0x7f200fe42ce8, defcount=1, closure=0x0) at Python/ceval.c:3267
        f = 0x7f1f9f0f15f0
        retval = 0x0
        fastlocals = 0x7f1f9f0f1768
        freevars = 0x7f1f9f0f1780
        tstate = 0x18ce0a0
        x = <optimized out>
        u = <optimized out>
#47 0x00007f201a54ade7 in fast_function (nk=<optimized out>, na=1, 
    n=<optimized out>, pp_stack=0x7ffcce5b6c70, func=0x7f200fe2d9b0)
    at Python/ceval.c:4131
        co = <optimized out>
        nd = <optimized out>
        globals = <optimized out>
        argdefs = <optimized out>
        d = <optimized out>
#48 call_function (oparg=<optimized out>, pp_stack=0x7ffcce5b6c70)
    at Python/ceval.c:4056
        func = 0x7f200fe2d9b0
        w = <optimized out>
        na = 1
        nk = <optimized out>
        n = <optimized out>
        pfunc = 0x7f1f77b6fec0
        x = <optimized out>
#49 PyEval_EvalFrameEx (f=f@entry=0x7f1f77b6fd38, throwflag=throwflag@entry=0)
    at Python/ceval.c:2681
        sp = 0x7f1f77b6fec8
        stack_pointer = <optimized out>
        next_instr = <optimized out>
        opcode = <optimized out>
        oparg = <optimized out>
        why = WHY_NOT
        err = 0
        x = <optimized out>
        v = <optimized out>
        w = <optimized out>
        u = <optimized out>
        t = <optimized out>
        stream = 0x0
        fastlocals = 0x7f1f77b6feb0
        freevars = <optimized out>
        retval = <optimized out>
        tstate = <optimized out>
        co = <optimized out>
        instr_ub = -1
        instr_lb = 0
        instr_prev = -1
        first_instr = <optimized out>
        names = <optimized out>
        consts = <optimized out>
#50 0x00007f201a54c1dc in PyEval_EvalCodeEx (co=<optimized out>, 
    globals=<optimized out>, locals=locals@entry=0x0, args=<optimized out>, 
    argcount=argcount@entry=1, kws=0x7f200fd235c8, kwcount=0, 
    defs=0x7f200fe42de8, defcount=1, closure=0x0) at Python/ceval.c:3267
        f = 0x7f1f77b6fd38
        retval = 0x0
        fastlocals = 0x7f1f77b6feb0
        freevars = 0x7f1f77b6fec0
        tstate = 0x18ce0a0
        x = <optimized out>
        u = <optimized out>
#51 0x00007f201a54ade7 in fast_function (nk=<optimized out>, na=1, 
    n=<optimized out>, pp_stack=0x7ffcce5b6e40, func=0x7f200fe2da28)
    at Python/ceval.c:4131
        co = <optimized out>
        nd = <optimized out>
        globals = <optimized out>
        argdefs = <optimized out>
        d = <optimized out>
#52 call_function (oparg=<optimized out>, pp_stack=0x7ffcce5b6e40)
    at Python/ceval.c:4056
        func = 0x7f200fe2da28
        w = <optimized out>
        na = 1
        nk = <optimized out>
        n = <optimized out>
        pfunc = 0x7f200fd235c0
        x = <optimized out>
#53 PyEval_EvalFrameEx (f=f@entry=0x7f200fd23440, throwflag=throwflag@entry=0)
    at Python/ceval.c:2681
        sp = 0x7f200fd235c8
        stack_pointer = <optimized out>
        next_instr = <optimized out>
        opcode = <optimized out>
        oparg = <optimized out>
        why = WHY_NOT
        err = 0
        x = <optimized out>
        v = <optimized out>
        w = <optimized out>
        u = <optimized out>
        t = <optimized out>
        stream = 0x0
        fastlocals = 0x7f200fd235b8
        freevars = <optimized out>
        retval = <optimized out>
        tstate = <optimized out>
        co = <optimized out>
        instr_ub = -1
        instr_lb = 0
        instr_prev = -1
        first_instr = <optimized out>
        names = <optimized out>
        consts = <optimized out>
#54 0x00007f201a54c1dc in PyEval_EvalCodeEx (co=<optimized out>, 
    globals=<optimized out>, locals=locals@entry=0x0, args=<optimized out>, 
    argcount=argcount@entry=1, kws=0x7f201a40cda0, kwcount=0, defs=0x0, 
    defcount=0, closure=0x0) at Python/ceval.c:3267
        f = 0x7f200fd23440
        retval = 0x0
        fastlocals = 0x7f200fd235b8
        freevars = 0x7f200fd235c0
        tstate = 0x18ce0a0
        x = <optimized out>
        u = <optimized out>
#55 0x00007f201a54ade7 in fast_function (nk=<optimized out>, na=1, 
    n=<optimized out>, pp_stack=0x7ffcce5b7010, func=0x7f200fd4c848)
    at Python/ceval.c:4131
        co = <optimized out>
        nd = <optimized out>
        globals = <optimized out>
        argdefs = <optimized out>
        d = <optimized out>
#56 call_function (oparg=<optimized out>, pp_stack=0x7ffcce5b7010)
    at Python/ceval.c:4056
        func = 0x7f200fd4c848
        w = <optimized out>
        na = 1
        nk = <optimized out>
        n = <optimized out>
        pfunc = 0x7f201a40cd98
        x = <optimized out>
#57 PyEval_EvalFrameEx (f=f@entry=0x7f201a40cc20, throwflag=throwflag@entry=0)
    at Python/ceval.c:2681
        sp = 0x7f201a40cda0
        stack_pointer = <optimized out>
        next_instr = <optimized out>
        opcode = <optimized out>
        oparg = <optimized out>
        why = WHY_NOT
        err = 0
        x = <optimized out>
        v = <optimized out>
        w = <optimized out>
        u = <optimized out>
        t = <optimized out>
        stream = 0x0
        fastlocals = 0x7f201a40cd98
        freevars = <optimized out>
        retval = <optimized out>
        tstate = <optimized out>
        co = <optimized out>
        instr_ub = -1
        instr_lb = 0
        instr_prev = -1
        first_instr = <optimized out>
        names = <optimized out>
        consts = <optimized out>
#58 0x00007f201a54c1dc in PyEval_EvalCodeEx (co=co@entry=0x7f201a3559b0, 
    globals=globals@entry=0x7f201a3b8168, locals=locals@entry=0x7f201a3b8168, 
    args=args@entry=0x0, argcount=argcount@entry=0, kws=kws@entry=0x0, 
    kwcount=0, defs=0x0, defcount=0, closure=0x0) at Python/ceval.c:3267
        f = 0x7f201a40cc20
        retval = 0x0
        fastlocals = 0x7f201a40cd98
        freevars = 0x7f201a40cd98
        tstate = 0x18ce0a0
        x = <optimized out>
        u = <optimized out>
#59 0x00007f201a54c2d9 in PyEval_EvalCode (co=co@entry=0x7f201a3559b0, 
    globals=globals@entry=0x7f201a3b8168, locals=locals@entry=0x7f201a3b8168)
    at Python/ceval.c:669
No locals.
#60 0x00007f201a570e7a in run_mod (arena=0x1945a00, flags=0x7ffcce5b7230, 
    locals=0x7f201a3b8168, globals=0x7f201a3b8168, filename=0x18f0ac0 "", 
    mod=<optimized out>) at Python/pythonrun.c:1365
        co = 0x7f201a3559b0
        v = <optimized out>
#61 PyRun_FileExFlags (fp=fp@entry=0x18f0ac0, 
    filename=filename@entry=0x7ffcce5b9474 "/data/home/jb12407/tmp/sage/src/bin/sage-ipython", start=start@entry=257, globals=globals@entry=0x7f201a3b8168, 
    locals=locals@entry=0x7f201a3b8168, closeit=closeit@entry=1, 
    flags=0x7ffcce5b7230) at Python/pythonrun.c:1351
        mod = <optimized out>
        arena = 0x1945a00
#62 0x00007f201a572295 in PyRun_SimpleFileExFlags (fp=fp@entry=0x18f0ac0, 
    filename=0x7ffcce5b9474 "/data/home/jb12407/tmp/sage/src/bin/sage-ipython", closeit=closeit@entry=1, flags=flags@entry=0x7ffcce5b7230)
    at Python/pythonrun.c:943
        m = 0x7f201a3a3be8
        d = 0x7f201a3b8168
        v = <optimized out>
        ext = <optimized out>
        set_file_name = 1
        len = <optimized out>
        ret = -1
#63 0x00007f201a572963 in PyRun_AnyFileExFlags (fp=fp@entry=0x18f0ac0, 
    filename=<optimized out>, closeit=closeit@entry=1, 
    flags=flags@entry=0x7ffcce5b7230) at Python/pythonrun.c:747
No locals.
#64 0x00007f201a588c67 in Py_Main (argc=<optimized out>, argv=<optimized out>)
    at Modules/main.c:640
        c = <optimized out>
        sts = <optimized out>
        command = 0x0
        filename = 0x7ffcce5b9474 "/data/home/jb12407/tmp/sage/src/bin/sage-ipython"
        module = 0x0
        fp = <optimized out>
        p = <optimized out>
        unbuffered = <optimized out>
        skipfirstline = 0
        stdin_is_interactive = 1
        help = <optimized out>
        version = <optimized out>
        saw_unbuffered_flag = <optimized out>
        cf = {cf_flags = 0}
#65 0x000000361de1ed1d in __libc_start_main () from /lib64/libc.so.6
No symbol table info available.
#66 0x00000000004006f1 in _start ()
No symbol table info available.


Cython backtrace
----------------
#0  0x000000361e20f320 in waitpid()
#1  0x00007f200ce23eb0 in print_enhanced_backtrace()at /data/home/jb12407/tmp/sage/local/var/tmp/sage/build/cysignals-1.1.1/src/build/src/cysignals/implementation.c:401
#2  0x00007f200ce246b0 in sigdie()at /data/home/jb12407/tmp/sage/local/var/tmp/sage/build/cysignals-1.1.1/src/build/src/cysignals/implementation.c:420
#3  0x00007f200ce270d0 in cysigs_signal_handler()at /data/home/jb12407/tmp/sage/local/var/tmp/sage/build/cysignals-1.1.1/src/build/src/cysignals/implementation.c:213
#4  0x000000361da178f0 in __restore_rt()
#5  0x00007f2002133c70 in daxpy_k()
#6  0x00007f2001f2bda0 in trmv_kernel()
#7  0x00007f20020eedb0 in exec_blas()
#8  0x00007f2001f3f450 in dtrmv_thread_NLU()
#9  0x00007f2001efe540 in dtrmv_()
#10 0x00007f2002382800 in dlahr2_()
#11 0x00007f200234a160 in dgehrd_()
#12 0x00007f2002344a70 in dgeev_()
#13 0x00007f19581a45a0 in f2py_rout__flapack_dgeev()at /tmp/pip-YiE2ja-build/build/src.linux-x86_64-2.7/build/src.linux-x86_64-2.7/scipy/linalg/_flapackmodule.c:24535
#14 0x00007f201a493140 in PyObject_Call()at /data/home/jb12407/tmp/sage/local/var/tmp/sage/build/python2-2.7.10.p2/src/Objects/abstract.c:2529
#15 0x00007f201a548fb5 in do_call()at /data/home/jb12407/tmp/sage/local/var/tmp/sage/build/python2-2.7.10.p2/src/Python/ceval.c:4253
#16 0x00007f201a546630 in call_function()at /data/home/jb12407/tmp/sage/local/var/tmp/sage/build/python2-2.7.10.p2/src/Python/ceval.c:4058
#17 0x00007f201a545440 in eig()at /data/home/jb12407/tmp/sage/local/lib/python2.7/site-packages/scipy/linalg/decomp.py:175
   170                                   overwrite_a=overwrite_a)
   171        else:
   172            wr, wi, vl, vr, info = geev(a1, lwork=lwork,
   173                                        compute_vl=compute_vl,
   174                                        compute_vr=compute_vr,
>  175                                        overwrite_a=overwrite_a)
   176            t = {'f': 'F', 'd': 'D'}[wr.dtype.char]
   177            w = wr + _I * wi
   178    
   179        if info < 0:
#18 0x00007f201a54b8f0 in PyEval_EvalCodeEx()at /data/home/jb12407/tmp/sage/local/var/tmp/sage/build/python2-2.7.10.p2/src/Python/ceval.c:3267
#19 0x00007f201a54ad93 in fast_function()at /data/home/jb12407/tmp/sage/local/var/tmp/sage/build/python2-2.7.10.p2/src/Python/ceval.c:4131
#20 0x00007f201a546630 in call_function()at /data/home/jb12407/tmp/sage/local/var/tmp/sage/build/python2-2.7.10.p2/src/Python/ceval.c:4056
#21 0x00007f201a545440 in eigvals()at /data/home/jb12407/tmp/sage/local/lib/python2.7/site-packages/scipy/linalg/decomp.py:608
   603        eig : eigenvalues and right eigenvectors of general arrays.
   604        eigh : eigenvalues and eigenvectors of symmetric/Hermitian arrays.
   605    
   606        """
   607        return eig(a, b=b, left=0, right=0, overwrite_a=overwrite_a,
>  608                   check_finite=check_finite)
   609    
   610    
   611    def eigvalsh(a, b=None, lower=True, overwrite_a=False,
   612                 overwrite_b=False, turbo=True, eigvals=None, type=1,
#22 0x00007f201a54b8f0 in PyEval_EvalCodeEx()at /data/home/jb12407/tmp/sage/local/var/tmp/sage/build/python2-2.7.10.p2/src/Python/ceval.c:3267
#23 0x00007f201a4c4450 in function_call()at /data/home/jb12407/tmp/sage/local/var/tmp/sage/build/python2-2.7.10.p2/src/Objects/funcobject.c:526
#24 0x00007f1959c799af in __Pyx_PyObject_Call()at /data/home/jb12407/tmp/sage/src/build/cythonized/sage/matrix/matrix_double_dense.c:28972
  28967        ternaryfunc call = func->ob_type->tp_call;
  28968        if (unlikely(!call))
  28969            return PyObject_Call(func, arg, kw);
  28970        if (unlikely(Py_EnterRecursiveCall((char*)" while calling a Python object")))
  28971            return NULL;
> 28972        result = (*call)(func, arg, kw);
  28973        Py_LeaveRecursiveCall();
  28974        if (unlikely(!result) && unlikely(!PyErr_Occurred())) {
  28975            PyErr_SetString(
  28976                PyExc_SystemError,
#25 0x00007f1959c79980 in __Pyx__PyObject_CallOneArg()at /data/home/jb12407/tmp/sage/src/build/cythonized/sage/matrix/matrix_double_dense.c:29292
  29287        PyObject *result;
  29288        PyObject *args = PyTuple_New(1);
  29289        if (unlikely(!args)) return NULL;
  29290        Py_INCREF(arg);
  29291        PyTuple_SET_ITEM(args, 0, arg);
> 29292        result = __Pyx_PyObject_Call(func, args, NULL);
  29293        Py_DECREF(args);
  29294        return result;
  29295    }
  29296    static CYTHON_INLINE PyObject* __Pyx_PyObject_CallOneArg(PyObject *func, PyObject *arg) {
#26 0x00007f1959cbe82a in __pyx_pf_4sage_6matrix_19matrix_double_dense_19Matrix_double_dense_30eigenvalues()at /data/home/jb12407/tmp/sage/src/build/cythonized/sage/matrix/matrix_double_dense.c:10417
  10412            __Pyx_INCREF(function);
  10413            __Pyx_DECREF_SET(__pyx_t_4, function);
  10414          }
  10415        }
  10416        if (!__pyx_t_1) {
> 10417          __pyx_t_8 = __Pyx_PyObject_CallOneArg(__pyx_t_4, ((PyObject *)__pyx_v_self->_matrix_numpy)); if (unlikely(!__pyx_t_8)) __PYX_ERR(0, 1471, __pyx_L1_error)
  10418          __Pyx_GOTREF(__pyx_t_8);
  10419        } else {
  10420          __pyx_t_6 = PyTuple_New(1+1); if (unlikely(!__pyx_t_6)) __PYX_ERR(0, 1471, __pyx_L1_error)
  10421          __Pyx_GOTREF(__pyx_t_6);
#27 0x00007f1959cbe710 in __pyx_pw_4sage_6matrix_19matrix_double_dense_19Matrix_double_dense_31eigenvalues()at /data/home/jb12407/tmp/sage/src/build/cythonized/sage/matrix/matrix_double_dense.c:9386
  9381      __pyx_L3_error:;
  9382      __Pyx_AddTraceback("sage.matrix.matrix_double_dense.Matrix_double_dense.eigenvalues", __pyx_clineno, __pyx_lineno, __pyx_filename);
  9383      __Pyx_RefNannyFinishContext();
  9384      return NULL;
  9385      __pyx_L4_argument_unpacking_done:;
> 9386      __pyx_r = __pyx_pf_4sage_6matrix_19matrix_double_dense_19Matrix_double_dense_30eigenvalues(((struct __pyx_obj_4sage_6matrix_19matrix_double_dense_Matrix_double_dense *)__pyx_v_self), __pyx_v_algorithm, __pyx_v_tol);
  9387    
  9388      /* function exit code */
  9389      __Pyx_RefNannyFinishContext();
  9390      return __pyx_r;
#28 0x00007f201a546630 in call_function()at /data/home/jb12407/tmp/sage/local/var/tmp/sage/build/python2-2.7.10.p2/src/Python/ceval.c:4035
#29 0x00007f201a545440 in <module>()at <ipython-input-2-27eff3b47c3d>:1
#30 0x00007f201a54b8f0 in PyEval_EvalCodeEx()at /data/home/jb12407/tmp/sage/local/var/tmp/sage/build/python2-2.7.10.p2/src/Python/ceval.c:3267
#31 0x00007f201a54c2c0 in PyEval_EvalCode()at /data/home/jb12407/tmp/sage/local/var/tmp/sage/build/python2-2.7.10.p2/src/Python/ceval.c:669
#32 0x00007f201a5480e0 in exec_statement()at /data/home/jb12407/tmp/sage/local/var/tmp/sage/build/python2-2.7.10.p2/src/Python/ceval.c:4732
#33 0x00007f201a545440 in run_code()at /data/home/jb12407/tmp/sage/local/lib/python2.7/site-packages/IPython/core/interactiveshell.py:2869
  2864            outflag = 1  # happens in more places, so it's easier as default
  2865            try:
  2866                try:
  2867                    self.hooks.pre_run_code_hook()
  2868                    #rprint('Running code', repr(code_obj)) # dbg
> 2869                    exec(code_obj, self.user_global_ns, self.user_ns)
  2870                finally:
  2871                    # Reset our crash handler in place
  2872                    sys.excepthook = old_excepthook
  2873            except SystemExit as e:
#34 0x00007f201a54b8f0 in PyEval_EvalCodeEx()at /data/home/jb12407/tmp/sage/local/var/tmp/sage/build/python2-2.7.10.p2/src/Python/ceval.c:3267
#35 0x00007f201a54ad93 in fast_function()at /data/home/jb12407/tmp/sage/local/var/tmp/sage/build/python2-2.7.10.p2/src/Python/ceval.c:4131
#36 0x00007f201a546630 in call_function()at /data/home/jb12407/tmp/sage/local/var/tmp/sage/build/python2-2.7.10.p2/src/Python/ceval.c:4056
#37 0x00007f201a545440 in run_ast_nodes()at /data/home/jb12407/tmp/sage/local/lib/python2.7/site-packages/IPython/core/interactiveshell.py:2815
  2810                        return True
  2811    
  2812                for i, node in enumerate(to_run_interactive):
  2813                    mod = ast.Interactive([node])
  2814                    code = compiler(mod, cell_name, "single")
> 2815                    if self.run_code(code, result):
  2816                        return True
  2817    
  2818                # Flush softspace
  2819                if softspace(sys.stdout, 0):
#38 0x00007f201a54b8f0 in PyEval_EvalCodeEx()at /data/home/jb12407/tmp/sage/local/var/tmp/sage/build/python2-2.7.10.p2/src/Python/ceval.c:3267
#39 0x00007f201a54ad93 in fast_function()at /data/home/jb12407/tmp/sage/local/var/tmp/sage/build/python2-2.7.10.p2/src/Python/ceval.c:4131
#40 0x00007f201a546630 in call_function()at /data/home/jb12407/tmp/sage/local/var/tmp/sage/build/python2-2.7.10.p2/src/Python/ceval.c:4056
#41 0x00007f201a545440 in run_cell()at /data/home/jb12407/tmp/sage/local/lib/python2.7/site-packages/IPython/core/interactiveshell.py:2705
  2700                    self.displayhook.exec_result = result
  2701    
  2702                    # Execute the user code
  2703                    interactivity = "none" if silent else self.ast_node_interactivity
  2704                    has_raised = self.run_ast_nodes(code_ast.body, cell_name,
> 2705                       interactivity=interactivity, compiler=compiler, result=result)
  2706    
  2707                    self.last_execution_succeeded = not has_raised
  2708    
  2709                    # Reset this so later displayed values do not modify the
#42 0x00007f201a54b8f0 in PyEval_EvalCodeEx()at /data/home/jb12407/tmp/sage/local/var/tmp/sage/build/python2-2.7.10.p2/src/Python/ceval.c:3267
#43 0x00007f201a54ad93 in fast_function()at /data/home/jb12407/tmp/sage/local/var/tmp/sage/build/python2-2.7.10.p2/src/Python/ceval.c:4131
#44 0x00007f201a546630 in call_function()at /data/home/jb12407/tmp/sage/local/var/tmp/sage/build/python2-2.7.10.p2/src/Python/ceval.c:4056
#45 0x00007f201a545440 in interact()at /data/home/jb12407/tmp/sage/local/lib/python2.7/site-packages/IPython/terminal/interactiveshell.py:393
   388                            or self.ask_yes_no('Do you really want to exit ([y]/n)?','y','n'):
   389                        self.ask_exit()
   390    
   391                else:
   392                    if code:
>  393                        self.run_cell(code, store_history=True)
   394    
   395        def mainloop(self, display_banner=DISPLAY_BANNER_DEPRECATED):
   396            # An extra layer of protection in case someone mashing Ctrl-C breaks
   397            # out of our internal code.
#46 0x00007f201a54b8f0 in PyEval_EvalCodeEx()at /data/home/jb12407/tmp/sage/local/var/tmp/sage/build/python2-2.7.10.p2/src/Python/ceval.c:3267
#47 0x00007f201a54ad93 in fast_function()at /data/home/jb12407/tmp/sage/local/var/tmp/sage/build/python2-2.7.10.p2/src/Python/ceval.c:4131
#48 0x00007f201a546630 in call_function()at /data/home/jb12407/tmp/sage/local/var/tmp/sage/build/python2-2.7.10.p2/src/Python/ceval.c:4056
#49 0x00007f201a545440 in mainloop()at /data/home/jb12407/tmp/sage/local/lib/python2.7/site-packages/IPython/terminal/interactiveshell.py:402
   397            # out of our internal code.
   398            if display_banner is not DISPLAY_BANNER_DEPRECATED:
   399                warn('mainloop `display_banner` argument is deprecated since IPython 5.0. Call `show_banner()` if needed.', DeprecationWarning, stacklevel=2)
   400            while True:
   401                try:
>  402                    self.interact()
   403                    break
   404                except KeyboardInterrupt:
   405                    print("\nKeyboardInterrupt escaped interact()\n")
   406    
#50 0x00007f201a54b8f0 in PyEval_EvalCodeEx()at /data/home/jb12407/tmp/sage/local/var/tmp/sage/build/python2-2.7.10.p2/src/Python/ceval.c:3267
#51 0x00007f201a54ad93 in fast_function()at /data/home/jb12407/tmp/sage/local/var/tmp/sage/build/python2-2.7.10.p2/src/Python/ceval.c:4131
#52 0x00007f201a546630 in call_function()at /data/home/jb12407/tmp/sage/local/var/tmp/sage/build/python2-2.7.10.p2/src/Python/ceval.c:4056
#53 0x00007f201a545440 in start()at /data/home/jb12407/tmp/sage/local/lib/python2.7/site-packages/IPython/terminal/ipapp.py:348
   343            if self.subapp is not None:
   344                return self.subapp.start()
   345            # perform any prexec steps:
   346            if self.interact:
   347                self.log.debug("Starting IPython's mainloop...")
>  348                self.shell.mainloop()
   349            else:
   350                self.log.debug("IPython not interactive...")
   351    
   352    def load_default_config(ipython_dir=None):
#54 0x00007f201a54b8f0 in PyEval_EvalCodeEx()at /data/home/jb12407/tmp/sage/local/var/tmp/sage/build/python2-2.7.10.p2/src/Python/ceval.c:3267
#55 0x00007f201a54ad93 in fast_function()at /data/home/jb12407/tmp/sage/local/var/tmp/sage/build/python2-2.7.10.p2/src/Python/ceval.c:4131
#56 0x00007f201a546630 in call_function()at /data/home/jb12407/tmp/sage/local/var/tmp/sage/build/python2-2.7.10.p2/src/Python/ceval.c:4056
#57 0x00007f201a545440 in <module>()at /data/home/jb12407/tmp/sage/src/bin/sage-ipython:11
     6    
     7    from sage.repl.interpreter import SageTerminalApp
     8    
     9    app = SageTerminalApp.instance()
    10    app.initialize()
>   11    app.start()
#58 0x00007f201a54b8f0 in PyEval_EvalCodeEx()at /data/home/jb12407/tmp/sage/local/var/tmp/sage/build/python2-2.7.10.p2/src/Python/ceval.c:3267
#59 0x00007f201a54c2c0 in PyEval_EvalCode()at /data/home/jb12407/tmp/sage/local/var/tmp/sage/build/python2-2.7.10.p2/src/Python/ceval.c:669
#60 0x00007f201a570e51 in run_mod()at /data/home/jb12407/tmp/sage/local/var/tmp/sage/build/python2-2.7.10.p2/src/Python/pythonrun.c:1365
#61 0x00007f201a570df0 in PyRun_FileExFlags()at /data/home/jb12407/tmp/sage/local/var/tmp/sage/build/python2-2.7.10.p2/src/Python/pythonrun.c:1351
#62 0x00007f201a5721c0 in PyRun_SimpleFileExFlags()at /data/home/jb12407/tmp/sage/local/var/tmp/sage/build/python2-2.7.10.p2/src/Python/pythonrun.c:943
#63 0x00007f201a5728f0 in PyRun_AnyFileExFlags()at /data/home/jb12407/tmp/sage/local/var/tmp/sage/build/python2-2.7.10.p2/src/Python/pythonrun.c:747
#64 0x00007f201a588000 in Py_Main()at /data/home/jb12407/tmp/sage/local/var/tmp/sage/build/python2-2.7.10.p2/src/Modules/main.c:640
#65 0x000000361de1ec20 in __libc_start_main()
#66 0x00000000004006c8 in _start()


warning: File "/opt/gcc-6.1.0/lib64/libstdc++.so.6.0.22-gdb.py" auto-loading has been declined by your `auto-load safe-path' set to "$debugdir:$datadir/auto-load".
close failed in file object destructor:
IOError: [Errno 9] Bad file descriptor

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