Thanks a lot for your help! The workaround works and more importantly I 
understand what happened now. Unfortunately now I get a massive stack trace 
and a segmentation fault... I guess I'll take that over to the DASSL 
developers.

On Wednesday, October 19, 2016 at 7:17:23 PM UTC+2, Steven G. Johnson wrote:
>
> A workaround from pyjulia might be to create a Julia function that can 
> wrap a Julia Function around a Python function
>
> fwrap = j.eval('f -> (args...) -> f(args...)')
>
>
> and then do
>
> j.dasslSolve(fwrap(f), 1.0, [0.0, 10.0])
>
>
> Not super elegant, but occasionally inter-language calling requires this 
> kind of "type massaging".  (We occasionally have to do a similar thing in 
> PyCall when passing Julia functions to Python, since some Python code only 
> works with "native" Python functions.)
>
julia-tutorial$ python dassl-from-python.py 

signal (11): Segmentation fault: 11
while loading no file, in expression starting on line 0
gc_mark_stack at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gc.c:1242 [inlined]
gc_mark_task_stack at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gc.c:1288 [inlined]
gc_mark_task at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gc.c:1302
push_root at /Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gc.c:1430
gc_push_root at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gc.c:1183 [inlined]
gc_mark_module at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gc.c:1212
push_root at /Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gc.c:1423
gc_push_root at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gc.c:1183 [inlined]
gc_mark_module at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gc.c:1212
push_root at /Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gc.c:1423
gc_push_root at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gc.c:1183 [inlined]
pre_mark at /Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gc.c:1509
_jl_gc_collect at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gc.c:1703 [inlined]
jl_gc_collect at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gc.c:1858
jl_gc_pool_alloc at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gc.c:828
jl_gc_alloc_ at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/./julia_internal.h:148 
[inlined]
jl_gc_alloc at /Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gc.c:1881
jl_alloc_svec_uninit at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/simplevector.c:47 
[inlined]
jl_alloc_svec at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/simplevector.c:56
intersect_tuple at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/jltypes.c:601 [inlined]
jl_type_intersect at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/jltypes.c:992
jl_type_intersection_matching at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/jltypes.c:1521
jl_lookup_match at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/typemap.c:376
jl_typemap_intersection_node_visitor at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/typemap.c:503 [inlined]
jl_typemap_intersection_visitor at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/typemap.c:565
ml_matches at /Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gf.c:2279 
[inlined]
jl_matching_methods at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gf.c:2300
_methods_by_ftype at ./reflection.jl:223
jlcall__methods_by_ftype_673 at 
/Applications/Julia-0.5.app/Contents/Resources/julia/lib/julia/sys.dylib 
(unknown line)
jl_call_method_internal at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/./julia_internal.h:189 
[inlined]
jl_apply_generic at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gf.c:1942
abstract_call_gf_by_type at ./inference.jl:765
jlcall_abstract_call_gf_by_type_685 at 
/Applications/Julia-0.5.app/Contents/Resources/julia/lib/julia/sys.dylib 
(unknown line)
jl_call_method_internal at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/./julia_internal.h:189 
[inlined]
jl_apply_generic at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gf.c:1942
abstract_call at ./inference.jl:1096
jlcall_abstract_call_589 at 
/Applications/Julia-0.5.app/Contents/Resources/julia/lib/julia/sys.dylib 
(unknown line)
jl_call_method_internal at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/./julia_internal.h:189 
[inlined]
jl_apply_generic at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gf.c:1942
abstract_eval_call at ./inference.jl:1126
abstract_eval at ./inference.jl:1147
jlcall_abstract_eval_536 at 
/Applications/Julia-0.5.app/Contents/Resources/julia/lib/julia/sys.dylib 
(unknown line)
jl_call_method_internal at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/./julia_internal.h:189 
[inlined]
jl_apply_generic at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gf.c:1942
typeinf_frame at ./inference.jl:1781
typeinf_loop at ./inference.jl:1655
typeinf_edge at ./inference.jl:1592
jlcall_typeinf_edge_743 at 
/Applications/Julia-0.5.app/Contents/Resources/julia/lib/julia/sys.dylib 
(unknown line)
jl_call_method_internal at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/./julia_internal.h:189 
[inlined]
jl_apply_generic at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gf.c:1942
typeinf_edge at ./inference.jl:1598
jlcall_typeinf_edge_741 at 
/Applications/Julia-0.5.app/Contents/Resources/julia/lib/julia/sys.dylib 
(unknown line)
jl_call_method_internal at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/./julia_internal.h:189 
[inlined]
jl_apply_generic at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gf.c:1942
abstract_call_gf_by_type at ./inference.jl:888
jlcall_abstract_call_gf_by_type_685 at 
/Applications/Julia-0.5.app/Contents/Resources/julia/lib/julia/sys.dylib 
(unknown line)
jl_call_method_internal at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/./julia_internal.h:189 
[inlined]
jl_apply_generic at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gf.c:1942
abstract_call at ./inference.jl:1096
jlcall_abstract_call_589 at 
/Applications/Julia-0.5.app/Contents/Resources/julia/lib/julia/sys.dylib 
(unknown line)
jl_call_method_internal at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/./julia_internal.h:189 
[inlined]
jl_apply_generic at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gf.c:1942
abstract_eval_call at ./inference.jl:1126
abstract_eval at ./inference.jl:1147
jlcall_abstract_eval_536 at 
/Applications/Julia-0.5.app/Contents/Resources/julia/lib/julia/sys.dylib 
(unknown line)
jl_call_method_internal at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/./julia_internal.h:189 
[inlined]
jl_apply_generic at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gf.c:1942
typeinf_frame at ./inference.jl:1781
typeinf_loop at ./inference.jl:1655
typeinf_edge at ./inference.jl:1592
jlcall_typeinf_edge_743 at 
/Applications/Julia-0.5.app/Contents/Resources/julia/lib/julia/sys.dylib 
(unknown line)
jl_call_method_internal at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/./julia_internal.h:189 
[inlined]
jl_apply_generic at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gf.c:1942
typeinf_edge at ./inference.jl:1598
jlcall_typeinf_edge_741 at 
/Applications/Julia-0.5.app/Contents/Resources/julia/lib/julia/sys.dylib 
(unknown line)
jl_call_method_internal at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/./julia_internal.h:189 
[inlined]
jl_apply_generic at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gf.c:1942
abstract_call_gf_by_type at ./inference.jl:888
jlcall_abstract_call_gf_by_type_685 at 
/Applications/Julia-0.5.app/Contents/Resources/julia/lib/julia/sys.dylib 
(unknown line)
jl_call_method_internal at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/./julia_internal.h:189 
[inlined]
jl_apply_generic at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gf.c:1942
abstract_call at ./inference.jl:1096
jlcall_abstract_call_589 at 
/Applications/Julia-0.5.app/Contents/Resources/julia/lib/julia/sys.dylib 
(unknown line)
jl_call_method_internal at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/./julia_internal.h:189 
[inlined]
jl_apply_generic at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gf.c:1942
abstract_eval_call at ./inference.jl:1126
abstract_eval at ./inference.jl:1147
jlcall_abstract_eval_536 at 
/Applications/Julia-0.5.app/Contents/Resources/julia/lib/julia/sys.dylib 
(unknown line)
jl_call_method_internal at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/./julia_internal.h:189 
[inlined]
jl_apply_generic at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gf.c:1942
typeinf_frame at ./inference.jl:1781
typeinf_loop at ./inference.jl:1655
typeinf_edge at ./inference.jl:1592
jlcall_typeinf_edge_743 at 
/Applications/Julia-0.5.app/Contents/Resources/julia/lib/julia/sys.dylib 
(unknown line)
jl_call_method_internal at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/./julia_internal.h:189 
[inlined]
jl_apply_generic at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gf.c:1942
typeinf_edge at ./inference.jl:1598
jlcall_typeinf_edge_741 at 
/Applications/Julia-0.5.app/Contents/Resources/julia/lib/julia/sys.dylib 
(unknown line)
jl_call_method_internal at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/./julia_internal.h:189 
[inlined]
jl_apply_generic at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gf.c:1942
abstract_call_gf_by_type at ./inference.jl:888
jlcall_abstract_call_gf_by_type_685 at 
/Applications/Julia-0.5.app/Contents/Resources/julia/lib/julia/sys.dylib 
(unknown line)
jl_call_method_internal at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/./julia_internal.h:189 
[inlined]
jl_apply_generic at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gf.c:1942
abstract_call at ./inference.jl:1096
jlcall_abstract_call_589 at 
/Applications/Julia-0.5.app/Contents/Resources/julia/lib/julia/sys.dylib 
(unknown line)
jl_call_method_internal at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/./julia_internal.h:189 
[inlined]
jl_apply_generic at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gf.c:1942
abstract_eval_call at ./inference.jl:1126
abstract_eval at ./inference.jl:1147
jlcall_abstract_eval_536 at 
/Applications/Julia-0.5.app/Contents/Resources/julia/lib/julia/sys.dylib 
(unknown line)
jl_call_method_internal at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/./julia_internal.h:189 
[inlined]
jl_apply_generic at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gf.c:1942
abstract_interpret at ./inference.jl:1238
jlcall_abstract_interpret_531 at 
/Applications/Julia-0.5.app/Contents/Resources/julia/lib/julia/sys.dylib 
(unknown line)
jl_call_method_internal at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/./julia_internal.h:189 
[inlined]
jl_apply_generic at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gf.c:1942
typeinf_frame at ./inference.jl:1726
typeinf_loop at ./inference.jl:1655
typeinf_edge at ./inference.jl:1592
jlcall_typeinf_edge_743 at 
/Applications/Julia-0.5.app/Contents/Resources/julia/lib/julia/sys.dylib 
(unknown line)
jl_call_method_internal at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/./julia_internal.h:189 
[inlined]
jl_apply_generic at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gf.c:1942
typeinf_edge at ./inference.jl:1598
jlcall_typeinf_edge_741 at 
/Applications/Julia-0.5.app/Contents/Resources/julia/lib/julia/sys.dylib 
(unknown line)
jl_call_method_internal at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/./julia_internal.h:189 
[inlined]
jl_apply_generic at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gf.c:1942
abstract_call_gf_by_type at ./inference.jl:888
jlcall_abstract_call_gf_by_type_685 at 
/Applications/Julia-0.5.app/Contents/Resources/julia/lib/julia/sys.dylib 
(unknown line)
jl_call_method_internal at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/./julia_internal.h:189 
[inlined]
jl_apply_generic at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gf.c:1942
abstract_call at ./inference.jl:1096
jlcall_abstract_call_589 at 
/Applications/Julia-0.5.app/Contents/Resources/julia/lib/julia/sys.dylib 
(unknown line)
jl_call_method_internal at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/./julia_internal.h:189 
[inlined]
jl_apply_generic at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gf.c:1942
abstract_eval_call at ./inference.jl:1126
abstract_eval at ./inference.jl:1147
jlcall_abstract_eval_536 at 
/Applications/Julia-0.5.app/Contents/Resources/julia/lib/julia/sys.dylib 
(unknown line)
jl_call_method_internal at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/./julia_internal.h:189 
[inlined]
jl_apply_generic at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gf.c:1942
abstract_interpret at ./inference.jl:1238
jlcall_abstract_interpret_531 at 
/Applications/Julia-0.5.app/Contents/Resources/julia/lib/julia/sys.dylib 
(unknown line)
jl_call_method_internal at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/./julia_internal.h:189 
[inlined]
jl_apply_generic at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gf.c:1942
typeinf_frame at ./inference.jl:1726
typeinf_loop at ./inference.jl:1655
typeinf_edge at ./inference.jl:1592
jlcall_typeinf_edge_743 at 
/Applications/Julia-0.5.app/Contents/Resources/julia/lib/julia/sys.dylib 
(unknown line)
jl_call_method_internal at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/./julia_internal.h:189 
[inlined]
jl_apply_generic at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gf.c:1942
typeinf_edge at ./inference.jl:1598
jlcall_typeinf_edge_741 at 
/Applications/Julia-0.5.app/Contents/Resources/julia/lib/julia/sys.dylib 
(unknown line)
jl_call_method_internal at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/./julia_internal.h:189 
[inlined]
jl_apply_generic at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gf.c:1942
abstract_call_gf_by_type at ./inference.jl:888
jlcall_abstract_call_gf_by_type_685 at 
/Applications/Julia-0.5.app/Contents/Resources/julia/lib/julia/sys.dylib 
(unknown line)
jl_call_method_internal at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/./julia_internal.h:189 
[inlined]
jl_apply_generic at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gf.c:1942
abstract_call at ./inference.jl:1096
jlcall_abstract_call_589 at 
/Applications/Julia-0.5.app/Contents/Resources/julia/lib/julia/sys.dylib 
(unknown line)
jl_call_method_internal at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/./julia_internal.h:189 
[inlined]
jl_apply_generic at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gf.c:1942
abstract_eval_call at ./inference.jl:1126
abstract_eval at ./inference.jl:1147
jlcall_abstract_eval_536 at 
/Applications/Julia-0.5.app/Contents/Resources/julia/lib/julia/sys.dylib 
(unknown line)
jl_call_method_internal at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/./julia_internal.h:189 
[inlined]
jl_apply_generic at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gf.c:1942
abstract_interpret at ./inference.jl:1238
jlcall_abstract_interpret_531 at 
/Applications/Julia-0.5.app/Contents/Resources/julia/lib/julia/sys.dylib 
(unknown line)
jl_call_method_internal at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/./julia_internal.h:189 
[inlined]
jl_apply_generic at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gf.c:1942
typeinf_frame at ./inference.jl:1726
typeinf_loop at ./inference.jl:1655
typeinf_edge at ./inference.jl:1592
jlcall_typeinf_edge_743 at 
/Applications/Julia-0.5.app/Contents/Resources/julia/lib/julia/sys.dylib 
(unknown line)
jl_call_method_internal at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/./julia_internal.h:189 
[inlined]
jl_apply_generic at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gf.c:1942
typeinf_edge at ./inference.jl:1598
jlcall_typeinf_edge_741 at 
/Applications/Julia-0.5.app/Contents/Resources/julia/lib/julia/sys.dylib 
(unknown line)
jl_call_method_internal at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/./julia_internal.h:189 
[inlined]
jl_apply_generic at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gf.c:1942
abstract_call_gf_by_type at ./inference.jl:888
jlcall_abstract_call_gf_by_type_685 at 
/Applications/Julia-0.5.app/Contents/Resources/julia/lib/julia/sys.dylib 
(unknown line)
jl_call_method_internal at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/./julia_internal.h:189 
[inlined]
jl_apply_generic at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gf.c:1942
abstract_call at ./inference.jl:1096
jlcall_abstract_call_589 at 
/Applications/Julia-0.5.app/Contents/Resources/julia/lib/julia/sys.dylib 
(unknown line)
jl_call_method_internal at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/./julia_internal.h:189 
[inlined]
jl_apply_generic at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gf.c:1942
abstract_eval_call at ./inference.jl:1126
abstract_eval at ./inference.jl:1147
jlcall_abstract_eval_536 at 
/Applications/Julia-0.5.app/Contents/Resources/julia/lib/julia/sys.dylib 
(unknown line)
jl_call_method_internal at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/./julia_internal.h:189 
[inlined]
jl_apply_generic at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gf.c:1942
abstract_interpret at ./inference.jl:1238
jlcall_abstract_interpret_531 at 
/Applications/Julia-0.5.app/Contents/Resources/julia/lib/julia/sys.dylib 
(unknown line)
jl_call_method_internal at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/./julia_internal.h:189 
[inlined]
jl_apply_generic at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gf.c:1942
typeinf_frame at ./inference.jl:1726
typeinf_loop at ./inference.jl:1655
typeinf_edge at ./inference.jl:1592
jlcall_typeinf_edge_743 at 
/Applications/Julia-0.5.app/Contents/Resources/julia/lib/julia/sys.dylib 
(unknown line)
jl_call_method_internal at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/./julia_internal.h:189 
[inlined]
jl_apply_generic at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gf.c:1942
typeinf_edge at ./inference.jl:1598
jlcall_typeinf_edge_741 at 
/Applications/Julia-0.5.app/Contents/Resources/julia/lib/julia/sys.dylib 
(unknown line)
jl_call_method_internal at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/./julia_internal.h:189 
[inlined]
jl_apply_generic at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gf.c:1942
abstract_call_gf_by_type at ./inference.jl:888
jlcall_abstract_call_gf_by_type_685 at 
/Applications/Julia-0.5.app/Contents/Resources/julia/lib/julia/sys.dylib 
(unknown line)
jl_call_method_internal at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/./julia_internal.h:189 
[inlined]
jl_apply_generic at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gf.c:1942
abstract_call at ./inference.jl:1096
jlcall_abstract_call_589 at 
/Applications/Julia-0.5.app/Contents/Resources/julia/lib/julia/sys.dylib 
(unknown line)
jl_call_method_internal at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/./julia_internal.h:189 
[inlined]
jl_apply_generic at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gf.c:1942
abstract_eval_call at ./inference.jl:1126
abstract_eval at ./inference.jl:1147
jlcall_abstract_eval_536 at 
/Applications/Julia-0.5.app/Contents/Resources/julia/lib/julia/sys.dylib 
(unknown line)
jl_call_method_internal at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/./julia_internal.h:189 
[inlined]
jl_apply_generic at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gf.c:1942
typeinf_frame at ./inference.jl:1781
typeinf_loop at ./inference.jl:1655
typeinf_edge at ./inference.jl:1592
jlcall_typeinf_edge_743 at 
/Applications/Julia-0.5.app/Contents/Resources/julia/lib/julia/sys.dylib 
(unknown line)
jl_call_method_internal at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/./julia_internal.h:189 
[inlined]
jl_apply_generic at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gf.c:1942
typeinf_edge at ./inference.jl:1598
jlcall_typeinf_edge_741 at 
/Applications/Julia-0.5.app/Contents/Resources/julia/lib/julia/sys.dylib 
(unknown line)
jl_call_method_internal at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/./julia_internal.h:189 
[inlined]
jl_apply_generic at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gf.c:1942
abstract_call_gf_by_type at ./inference.jl:888
jlcall_abstract_call_gf_by_type_685 at 
/Applications/Julia-0.5.app/Contents/Resources/julia/lib/julia/sys.dylib 
(unknown line)
jl_call_method_internal at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/./julia_internal.h:189 
[inlined]
jl_apply_generic at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gf.c:1942
abstract_call at ./inference.jl:1096
jlcall_abstract_call_589 at 
/Applications/Julia-0.5.app/Contents/Resources/julia/lib/julia/sys.dylib 
(unknown line)
jl_call_method_internal at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/./julia_internal.h:189 
[inlined]
jl_apply_generic at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gf.c:1942
abstract_eval_call at ./inference.jl:1126
abstract_eval at ./inference.jl:1147
jlcall_abstract_eval_536 at 
/Applications/Julia-0.5.app/Contents/Resources/julia/lib/julia/sys.dylib 
(unknown line)
jl_call_method_internal at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/./julia_internal.h:189 
[inlined]
jl_apply_generic at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gf.c:1942
typeinf_frame at ./inference.jl:1781
typeinf_loop at ./inference.jl:1672
jlcall_typeinf_loop_235 at 
/Applications/Julia-0.5.app/Contents/Resources/julia/lib/julia/sys.dylib 
(unknown line)
jl_call_method_internal at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/./julia_internal.h:189 
[inlined]
jl_apply_generic at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gf.c:1942
typeinf_edge at ./inference.jl:1592
jl_call_method_internal at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/./julia_internal.h:189 
[inlined]
jl_apply_generic at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gf.c:1942
typeinf_ext at ./inference.jl:1616
jl_call_method_internal at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/./julia_internal.h:189 
[inlined]
jl_apply_generic at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gf.c:1942
jl_apply at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/./julia.h:1392 [inlined]
jl_type_infer at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gf.c:210
jl_compile_for_dispatch at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gf.c:1295
jl_call_method_internal at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/./julia_internal.h:184 
[inlined]
jl_apply_generic at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/gf.c:1942
jl_apply at 
/Users/osx/buildbot/slave/package_osx10_9-x64/build/src/./julia.h:1392 [inlined]
start_task at /Users/osx/buildbot/slave/package_osx10_9-x64/build/src/task.c:253
Allocations: 2409997 (Pool: 2409060; Big: 937); GC: 1
Segmentation fault: 11

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