[commit: ghc] master: Make candidateQTvs contain tyvar with zonked kinds (71e26a7)

[git at git.haskell.org]

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

On branch  : master
Link       : http://ghc.haskell.org/trac/ghc/changeset/71e26a74da5e5e9a61163b87ab4d22de88a2d04a/ghc

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commit 71e26a74da5e5e9a61163b87ab4d22de88a2d04a
Author: Simon Peyton Jones <simonpj at microsoft.com>
Date:   Fri Dec 21 11:11:31 2018 +0000

    Make candidateQTvs contain tyvar with zonked kinds
    
    candidateQTyVars was failing to return fully-zonked
    tyvars, and that made things fall over chaotically
    when we try to sort them into a well-scoped telescope.
    Result: Trac #15795
    
    So I made candidateQTvs guarantee to have fully-zonked
    tyvars (i.e. with zonked kinds).  That's a bit annoying
    but not really difficult.


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71e26a74da5e5e9a61163b87ab4d22de88a2d04a
 compiler/typecheck/TcMType.hs        | 150 +++++++++++++++++++----------------
 testsuite/tests/polykinds/T15795.hs  |  15 ++++
 testsuite/tests/polykinds/T15795a.hs |   9 +++
 testsuite/tests/polykinds/all.T      |   3 +
 4 files changed, 109 insertions(+), 68 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 71e26a74da5e5e9a61163b87ab4d22de88a2d04a