[GHC] #9406: unexpected failure for T7837(profasm)

[GHC]

#9406: unexpected failure for T7837(profasm)
-------------------------------------+-------------------------------------
        Reporter:  jrp               |                Owner:
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Profiling         |              Version:  7.8.3
      Resolution:                    |             Keywords:  T7837
Operating System:  Unknown/Multiple  |         Architecture:  x86_64
 Type of failure:  Incorrect result  |  (amd64)
  at runtime                         |            Test Case:  T7837
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
-------------------------------------+-------------------------------------
Changes (by thomie):

 * priority:  low => normal
 * component:  Test Suite => Profiling
 * status:  closed => new
 * resolution:  worksforme =>


Comment:

 I can absolutely reproduce this with ghc-7.10.3 and HEAD.

 {{{
 $ make TEST=T7837 WAY=prof TEST_HC=/opt/ghc/7.10.3/bin/ghc CLEANUP=1
 ...
 -Rule fired: Class op signum
  Rule fired: Class op abs
 +Rule fired: Class op signum
  Rule fired: normalize/Double
 -Rule fired: Class op HEq_sc
 -Rule fired: Class op HEq_sc
 -Rule fired: Class op HEq_sc
 }}}

 With HEAD (2aee41960aa00fe09a2cd1983e02c15e06013037):
 {{{
  Rule fired: normalize/Double
  Rule fired: Class op HEq_sc
  Rule fired: Class op HEq_sc
 -Rule fired: Class op HEq_sc
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9406#comment:4>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler