[commit: ghc] master: Support constraint synonym implementations of abstract classes. (7e77c4b)

[git at git.haskell.org]

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

On branch  : master
Link       : http://ghc.haskell.org/trac/ghc/changeset/7e77c4b2ee08d7f88df8ba47537640ec1bd70bfe/ghc

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

commit 7e77c4b2ee08d7f88df8ba47537640ec1bd70bfe
Author: Edward Z. Yang <ezyang at cs.stanford.edu>
Date:   Thu Oct 13 21:34:17 2016 -0700

    Support constraint synonym implementations of abstract classes.
    
    Summary:
    
    Test Plan: validate
    
    Reviewers: goldfire, simonpj, austin, bgamari
    
    Subscribers: thomie
    
    Differential Revision: https://phabricator.haskell.org/D2595
    
    GHC Trac Issues: #12679


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

7e77c4b2ee08d7f88df8ba47537640ec1bd70bfe
 compiler/iface/TcIface.hs                          |  1 +
 compiler/typecheck/TcRnDriver.hs                   | 46 +++++++++++++++++++++-
 testsuite/tests/backpack/should_compile/all.T      |  2 +
 testsuite/tests/backpack/should_compile/bkp39.bkp  | 17 ++++++++
 .../tests/backpack/should_compile/bkp39.stderr     | 12 ++++++
 testsuite/tests/backpack/should_compile/bkp40.bkp  | 41 +++++++++++++++++++
 .../tests/backpack/should_compile/bkp40.stderr     | 19 +++++++++
 7 files changed, 137 insertions(+), 1 deletion(-)

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 7e77c4b2ee08d7f88df8ba47537640ec1bd70bfe