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| author | Ryan Scott <ryan.gl.scott@gmail.com> | 2016-10-01 17:58:44 -0400 |
|---|---|---|
| committer | Ben Gamari <ben@smart-cactus.org> | 2016-10-01 20:01:29 -0400 |
| commit | 23cf32da76fe6ed29fa141047749d390df763f94 (patch) | |
| tree | 76966da97a5f206549161c77b3f7ae1e8cf1ab8e /validate | |
| parent | f547b444fdaf1c86abede42bf4c4b1037f50f588 (diff) | |
| download | haskell-23cf32da76fe6ed29fa141047749d390df763f94.tar.gz | |
Disallow standalone deriving declarations involving unboxed tuples or sums
There was an awful leak where GHC permitted standalone `deriving`
declarations to create instances for unboxed sum or tuple types. This
fortifies the checks that GHC performs to catch this scenario and give
an appropriate error message.
Fixes #11509.
Test Plan: ./validate
Reviewers: goldfire, austin, bgamari
Reviewed By: bgamari
Subscribers: thomie
Differential Revision: https://phabricator.haskell.org/D2557
GHC Trac Issues: #11509
Diffstat (limited to 'validate')
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