[GHC] #14361: GHC HEAD miscompiles `text-containers`

[GHC]

#14361: GHC HEAD miscompiles `text-containers`
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        Reporter:  hvr               |                Owner:  (none)
            Type:  bug               |               Status:  patch
        Priority:  high              |            Milestone:  8.4.1
       Component:  Compiler          |              Version:  8.3
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Incorrect result  |  Unknown/Multiple
  at runtime                         |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by Ben Gamari <ben@…>):

 In [changeset:"a27056f9823f8bbe2302f1924b3ab38fd6752e37/ghc" a27056f/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="a27056f9823f8bbe2302f1924b3ab38fd6752e37"
 cmm/CBE: Fix a few more zip uses

 Ensure that we don't consider lists of equal length to be equal when
 they are not. I noticed these while working on the fix for #14361.

 Reviewers: austin, simonmar, michalt

 Reviewed By: michalt

 Subscribers: rwbarton, thomie

 GHC Trac Issues: #14361

 Differential Revision: https://phabricator.haskell.org/D4153
 }}}

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14361#comment:16>
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