[commit: ghc] wip/T12144: Work on #12144 (588bfab)

[git at git.haskell.org]

Repository : ssh://git@git.haskell.org/ghc

On branch  : wip/T12144
Link       : http://ghc.haskell.org/trac/ghc/changeset/588bfab63eef99ce504effe04c06e3945a12a5dd/ghc

>---------------------------------------------------------------

commit 588bfab63eef99ce504effe04c06e3945a12a5dd
Author: Ryan Scott <ryan.gl.scott at gmail.com>
Date:   Sat Aug 27 14:00:56 2016 -0400

    Work on #12144


>---------------------------------------------------------------

588bfab63eef99ce504effe04c06e3945a12a5dd
 compiler/typecheck/TcDeriv.hs                     | 97 ++++++++++++++---------
 testsuite/tests/deriving/should_compile/T12144.hs |  6 ++
 testsuite/tests/deriving/should_compile/all.T     |  1 +
 3 files changed, 68 insertions(+), 36 deletions(-)

Diff suppressed because of size. To see it, use:

    git diff-tree --root --patch-with-stat --no-color --find-copies-harder --ignore-space-at-eol --cc 588bfab63eef99ce504effe04c06e3945a12a5dd