[GHC] #11296: T8726 fails on arm

[GHC]

#11296: T8726 fails on arm
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        Reporter:  bgamari           |                Owner:  bgamari
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:  8.0.1
       Component:  Compiler          |              Version:  7.10.3
      Resolution:                    |             Keywords:
Operating System:  Linux             |         Architecture:  arm
 Type of failure:  Incorrect result  |            Test Case:  T8726
  at runtime                         |
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by bgamari):

 The first bad commit appears to be,
 {{{
 commit 9e8562ae02701270e2c1dfcee3279d862dc5b7b6
 Author: Ben Gamari <bgamari.foss at gmail.com>
 Date:   Fri Aug 21 10:37:39 2015 +0200

     Implement getSizeofMutableByteArrayOp primop

     Now since ByteArrays are mutable we need to be more explicit about
 when
     the size is queried.

     Test Plan: Add testcase and validate

     Reviewers: goldfire, hvr, austin

     Subscribers: thomie

     Differential Revision: https://phabricator.haskell.org/D1139

     GHC Trac Issues: #9447
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11296#comment:3>
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