#9089: Graphics3dGroup __add__ modifies its arguments
-----------------------------------+----------------------------------------
   Reporter:  jason                |       Owner:  jason, was
       Type:  defect               |      Status:  needs_work
   Priority:  major                |   Milestone:  sage-4.5  
  Component:  graphics             |    Keywords:            
     Author:  Jason Grout          |    Upstream:  N/A       
   Reviewer:  Karl-Dieter Crisman  |      Merged:            
Work_issues:                       |  
-----------------------------------+----------------------------------------
Changes (by davidloeffler):

  * status:  positive_review => needs_work


Comment:

 I'm getting a doctest failure with this patch on 4.5.alpha1:
 {{{
 **********************************************************************
 File "/storage/masiao/sage-4.5.alpha1/devel/sage-
 reviewing/sage/plot/plot.py", line 428:
     sage: g.show()
 Exception raised:
     Traceback (most recent call last):
       File "/storage/masiao/sage-4.5.alpha1/local/bin/ncadoctest.py", line
 1231, in run_one_test
         self.run_one_example(test, example, filename, compileflags)
       File "/storage/masiao/sage-4.5.alpha1/local/bin/sagedoctest.py",
 line 38, in run_one_example
         OrigDocTestRunner.run_one_example(self, test, example, filename,
 compileflags)
       File "/storage/masiao/sage-4.5.alpha1/local/bin/ncadoctest.py", line
 1172, in run_one_example
         compileflags, 1) in test.globs
       File "<doctest __main__.example_3[11]>", line 1, in <module>
         g.show()###line 428:
     sage: g.show()
       File "base.pyx", line 1081, in sage.plot.plot3d.base.Graphics3d.show
 (sage/plot/plot3d/base.c:10184)
       File "base.pyx", line 524, in
 sage.plot.plot3d.base.Graphics3d.tachyon (sage/plot/plot3d/base.c:4785)
       File "base.pyx", line 1408, in
 sage.plot.plot3d.base.Graphics3dGroup.texture_set
 (sage/plot/plot3d/base.c:13371)
       File "base.pyx", line 1408, in
 sage.plot.plot3d.base.Graphics3dGroup.texture_set
 (sage/plot/plot3d/base.c:13371)
       File "base.pyx", line 1408, in
 sage.plot.plot3d.base.Graphics3dGroup.texture_set
 (sage/plot/plot3d/base.c:13371)
       File "base.pyx", line 1408, in
 sage.plot.plot3d.base.Graphics3dGroup.texture_set
 (sage/plot/plot3d/base.c:13387)
     TypeError: reduce() of empty sequence with no initial value
 **********************************************************************
 }}}

 Also, if I install this together with the patches at #9066 I get a bunch
 more failures coming in:
 {{{
 sage -t  -long devel/sage/sage/plot/plot3d/shapes2.py # 5 doctests failed
 }}}

-- 
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/9089#comment:11>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica, 
and MATLAB

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