[commit: ghc] ghc-7.8: Take account of the AvailTC invariant when importing (86d240b)

[git at git.haskell.org]

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

On branch  : ghc-7.8
Link       : http://ghc.haskell.org/trac/ghc/changeset/86d240b356b9d7b595da98ec286754c8f86e45e1/ghc

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

commit 86d240b356b9d7b595da98ec286754c8f86e45e1
Author: Simon Peyton Jones <simonpj at microsoft.com>
Date:   Fri Apr 18 23:30:18 2014 +0100

    Take account of the AvailTC invariant when importing
    
    In the rather gnarly filterImports code, someone had forgotten
    the AvailTC invariant:  in AvailTC n [n,s1,s2], the 'n' is itself
    included in the list of names.
    
    (cherry picked from commit f964cd9c5c411f8a2383cf2b080581a5c3349661)


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86d240b356b9d7b595da98ec286754c8f86e45e1
 compiler/rename/RnNames.lhs                     | 80 +++++++++++++++----------
 testsuite/tests/rename/should_fail/T9006.hs     |  3 +
 testsuite/tests/rename/should_fail/T9006.stderr |  2 +
 testsuite/tests/rename/should_fail/T9006a.hs    |  3 +
 testsuite/tests/rename/should_fail/all.T        |  3 +
 5 files changed, 59 insertions(+), 32 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 86d240b356b9d7b595da98ec286754c8f86e45e1