[Pkg-haskell-maintainers] Bug#750578: haskell-mono-traversable: FTBFS in 32-bit mode: osum list test fails

[Aaron M. Ucko]

Source: haskell-mono-traversable
Version: 0.4.0.1-1
Severity: important
Justification: fails to build from source

Builds of haskell-mono-traversable for 32-bit architectures such as i386
have been failing:

  1) osum list
  expected: 143223616
   but got: -2004260032

  [...]

  201 examples, 1 failure
  Test suite test: FAIL
  Test suite logged to: dist-ghc/test/mono-traversable-0.6.0-test.log
  0 of 1 test suites (0 of 1 test cases) passed.

Could you please take a look?  FWIW, the wrong value is off by exactly 2³¹.

Thanks!