Update 8.0.2 release notes for #12784
authorRyan Scott <ryan.gl.scott@gmail.com>
Mon, 7 Nov 2016 13:56:22 +0000 (08:56 -0500)
committerRyan Scott <ryan.gl.scott@gmail.com>
Mon, 7 Nov 2016 13:56:22 +0000 (08:56 -0500)
commit2e8463b232054b788b73e6551947a9434aa76009
tree536193e0c7dec74c9d6d5f93688a4fe35820765a
parent91f9e13887f49c28e4dbde4edc2c5c65de44c9e9
Update 8.0.2 release notes for #12784

Summary:
The fix for #12220 exposed some ill-typed programs which passed the typechecker
in GHC 8.0.1 but now fail to typecheck in GHC 8.0.2. It's a bit difficult to
characterize what exactly triggers this bug, but we at least have a minimal
example and a simple fix to illustrate the problem and solution, so let's
add that the the 8.0.2 release notes to advertise this change.

Resolves #12784.

Reviewers: rwbarton, austin, bgamari

Reviewed By: bgamari

Subscribers: thomie

Differential Revision: https://phabricator.haskell.org/D2682

GHC Trac Issues: #12784
docs/users_guide/8.0.2-notes.rst