[commit: ghc] master: Fix the handling of instance signatures (Trac #9582, #9833) (e6a2050)

[Gabor Greif]

Maybe this (https://ghc.haskell.org/trac/ghc/ticket/7908) is fixed too?

Cheers,

    Gabor

On 12/1/14, git at git.haskell.org <git at git.haskell.org> wrote:
> Repository : ssh://git@git.haskell.org/ghc
>
> On branch  : master
> Link       :
> http://ghc.haskell.org/trac/ghc/changeset/e6a2050ebb6da316aecec66a6795715fbab355ca/ghc
>
>>---------------------------------------------------------------
>
> commit e6a2050ebb6da316aecec66a6795715fbab355ca
> Author: Simon Peyton Jones <simonpj at microsoft.com>
> Date:   Mon Dec 1 11:43:20 2014 +0000
>
>     Fix the handling of instance signatures (Trac #9582, #9833)
>
>     This finally solves the issue of instance-method signatures that are
>     more polymorphic than the instanted class method.
>
>     See Note [Instance method signatures] in TcInstDcls.
>
>     A very nice fix for the two Trac tickets above.
>
>
>>---------------------------------------------------------------
>
> e6a2050ebb6da316aecec66a6795715fbab355ca
>  compiler/typecheck/TcBinds.lhs                     |  18 ++-
>  compiler/typecheck/TcClassDcl.lhs                  |  16 +--
>  compiler/typecheck/TcInstDcls.lhs                  | 121
> ++++++++++++---------
>  docs/users_guide/glasgow_exts.xml                  |  29 ++++-
>  .../tests/indexed-types/should_compile/T9582.hs    |  14 +++
>  testsuite/tests/indexed-types/should_compile/all.T |   1 +
>  testsuite/tests/polykinds/T9833.hs                 |  18 +++
>  testsuite/tests/polykinds/all.T                    |   2 +
>  testsuite/tests/typecheck/should_fail/T6001.stderr |   9 +-
>  testsuite/tests/typecheck/should_fail/T7545.hs     |   1 +
>  testsuite/tests/typecheck/should_fail/T7545.stderr |   5 -
>  testsuite/tests/typecheck/should_fail/all.T        |   2 +-
>  12 files changed, 157 insertions(+), 79 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 e6a2050ebb6da316aecec66a6795715fbab355ca
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