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

[GHC]

#9406: unexpected failure for T7837(profasm)
-------------------------------------+-------------------------------------
       Reporter:  jrp                |                   Owner:
           Type:  bug                |                  Status:  new
       Priority:  low                |               Milestone:
      Component:  Test Suite         |                 Version:  7.8.3
       Keywords:  T7837              |        Operating System:  MacOS X
   Architecture:  x86_64 (amd64)     |         Type of failure:  Incorrect
     Difficulty:  Unknown            |  result at runtime
     Blocked By:                     |               Test Case:  T7837
Related Tickets:                     |                Blocking:
                                     |  Differential Revisions:
-------------------------------------+-------------------------------------
 This may be a test suite configuration error as the normal case works.
 When run with an llvm-perf build of the HEAD, I get:

 {{{
 =====> T7837(normal) 1395 of 4068 [0, 0, 0]
 cd ./indexed-types/should_compile &&
 '/Users/jrp/Projects/haskell/ghc/inplace/bin/ghc-stage2' -fforce-recomp
 -dcore-lint -dcmm-lint -dno-debug-output -no-user-package-db -rtsopts
 -fno-ghci-history -c T7837.hs  -O -ddump-rule-firings  >T7837.comp.stderr
 2>&1
 =====> T7837(profasm) 1395 of 4068 [0, 0, 0]
 cd ./indexed-types/should_compile &&
 '/Users/jrp/Projects/haskell/ghc/inplace/bin/ghc-stage2' -fforce-recomp
 -dcore-lint -dcmm-lint -dno-debug-output -no-user-package-db -rtsopts
 -fno-ghci-history -c T7837.hs -O -prof -static -auto-all -O -ddump-rule-
 firings  >T7837.comp.stderr 2>&1
 Actual stderr output differs from expected:
 --- ./indexed-types/should_compile/T7837.stderr 2014-08-03
 11:36:53.000000000 +0100
 +++ ./indexed-types/should_compile/T7837.comp.stderr    2014-08-04
 23:16:34.000000000 +0100
 @@ -1,3 +1,4 @@
  Rule fired: Class op abs
  Rule fired: Class op signum
  Rule fired: normalize/Double
 +Rule fired: Class op /
 *** unexpected failure for T7837(profasm)

 Unexpected results from:
 TEST="T7837"

 OVERALL SUMMARY for test run started at Mon Aug  4 23:16:32 2014 BST
  0:00:02 spent to go through
     4068 total tests, which gave rise to
    19536 test cases, of which
    19534 were skipped

        0 had missing libraries
        1 expected passes
        0 expected failures

        0 caused framework failures
        0 unexpected passes
        1 unexpected failures

 Unexpected failures:
    indexed-types/should_compile  T7837 [stderr mismatch] (profasm)
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9406>
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