#16788: segfault in numerical_integral()
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       Reporter:  rws                        |        Owner:
           Type:  defect                     |       Status:  new
       Priority:  critical                   |    Milestone:  sage-6.4
      Component:  calculus                   |   Resolution:
       Keywords:  integral, numerics, crash  |    Merged in:
        Authors:                             |    Reviewers:
Report Upstream:  N/A                        |  Work issues:
         Branch:                             |       Commit:
   Dependencies:                             |     Stopgaps:
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Comment (by rws):

 OK, the reason is, `gsl_integration_workspace_alloc` returns `NULL` which
 is then fed into the `qag` integration. So, the code needs to catch it and
 give an error message.

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Ticket URL: <http://trac.sagemath.org/ticket/16788#comment:9>
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