[GHC] #11810: Filtering of cost-center profiler output no longer works

[GHC]

#11810: Filtering of cost-center profiler output no longer works
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        Reporter:  bgamari           |                Owner:
            Type:  bug               |               Status:  patch
        Priority:  highest           |            Milestone:  8.0.1
       Component:  Profiling         |              Version:  8.0.1-rc3
      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):  Phab:D2090
       Wiki Page:                    |
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Comment (by Ben Gamari <ben@…>):

 In [changeset:"535896e58f7fc8d89a5ff34629a3471eac529d93/ghc" 535896e/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="535896e58f7fc8d89a5ff34629a3471eac529d93"
 rts: Fix parsing of profiler selectors

 69822f0c5b67161b4d7558081bc94f6f3a7c5dbb broke this as it held on to a
 reference into the `arg` string, which is later freed. Humbug.

 Test Plan: Try using filtering

 Reviewers: austin

 Subscribers: thomie

 Differential Revision: https://phabricator.haskell.org/D2090

 GHC Trac Issues: #11810
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11810#comment:2>
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