[GHC] #9675: Unreasonable memory usage on large data structures

[GHC]

#9675: Unreasonable memory usage on large data structures
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              Reporter:  Polarina    |            Owner:
                  Type:  bug         |           Status:  new
              Priority:  normal      |        Milestone:
             Component:  Compiler    |          Version:  7.8.3
            Resolution:              |         Keywords:
      Operating System:  Linux       |     Architecture:  x86_64 (amd64)
       Type of failure:  Compile-    |       Difficulty:  Unknown
  time performance bug               |       Blocked By:
             Test Case:              |  Related Tickets:
              Blocking:              |
Differential Revisions:              |
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Comment (by Joachim Breitner <mail@…>):

 In [changeset:"d9db81f4ed8ca6e7262f84347174d6b0e2e9a76a/ghc"]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="d9db81f4ed8ca6e7262f84347174d6b0e2e9a76a"
 seqDmdType needs to seq the DmdEnv as well

 otherwise this can retain large lazy calculations. This fixed one space
 leak pointed out in #9675.
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9675#comment:13>
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