[commit: ghc] master: Refactor renaming of operators/sections to fix DuplicateRecordFields bugs (2484d4d)

[git at git.haskell.org]

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

On branch  : master
Link       : http://ghc.haskell.org/trac/ghc/changeset/2484d4dae65c81f218dcfe494b963b2630bb8fa6/ghc

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commit 2484d4dae65c81f218dcfe494b963b2630bb8fa6
Author: Adam Gundry <adam at well-typed.com>
Date:   Tue Feb 14 09:35:06 2017 -0500

    Refactor renaming of operators/sections to fix DuplicateRecordFields bugs
    
    A variety of panics were possible because the get_op function in
    RnTypes didn't handle the possibility that its argument might be an
    ambiguous record field. I've made its return type more informative to
    correctly handle occurrences of record fields.  Fixes Trac #13132.
    
    Test Plan: new test
    overloadedrecflds/should_fail/T13132_duplicaterecflds
    
    Reviewers: bgamari, simonpj, austin
    
    Reviewed By: bgamari
    
    Subscribers: thomie
    
    Differential Revision: https://phabricator.haskell.org/D3126


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2484d4dae65c81f218dcfe494b963b2630bb8fa6
 compiler/rename/RnTypes.hs                         | 74 +++++++++++++++-------
 .../should_fail/T13132_duplicaterecflds.hs         |  9 +++
 .../should_fail/T13132_duplicaterecflds.stderr     |  6 ++
 .../tests/overloadedrecflds/should_fail/all.T      |  1 +
 4 files changed, 68 insertions(+), 22 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 2484d4dae65c81f218dcfe494b963b2630bb8fa6