[GHC] #15350: gcdExtInteger violates assertion

[GHC]

#15350: gcdExtInteger violates assertion
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        Reporter:  Bodigrim          |                Owner:  Bodigrim
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:  8.6.1
       Component:  Core Libraries    |              Version:  8.4.3
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  Runtime crash     |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by monoidal):

 What's the status here? I see that the change was merged, but I don't see
 a test. I've tried adding a test, but it's still failing with the same
 error on my machine. Maybe I'm doing something wrong? Is the plan to
 release a new version of `integer-gmp`?

 {{{
 diff --git a/testsuite/tests/lib/integer/integerGmpInternals.hs
 b/testsuite/tests/lib/integer/integerGmpInternals.hs
 index c90df5c90d..e1faf900c7 100644
 --- a/testsuite/tests/lib/integer/integerGmpInternals.hs
 +++ b/testsuite/tests/lib/integer/integerGmpInternals.hs
 @@ -86,6 +86,7 @@ main = do
      print $ gcdExtInteger x (-y)
      print $ gcdExtInteger (-x) y
      print $ gcdExtInteger (-x) (-y)
 +    print $ gcdExtInteger 2 (2^65 + 1)  -- see Trac #15350
      print $ powInteger 12345 0
      print $ powInteger 12345 1
      print $ powInteger 12345 30
 }}}

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15350#comment:4>
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