[GHC] #481: Recompilation check fails for TH

[GHC]

#481: Recompilation check fails for TH
------------------------------------------------+--------------------------
        Reporter:  simonpj                      |         Owner:  simonmar
            Type:  bug                          |        Status:  closed
        Priority:  normal                       |     Milestone:  7.2.1
       Component:  Template Haskell             |       Version:  6.4.1
      Resolution:  fixed                        |      Keywords:
Operating System:  Unknown/Multiple             |  Architecture:
 Type of failure:  Incorrect result at runtime  |  Unknown/Multiple
      Blocked By:                               |     Test Case:
                                                |  TH_recompile
                                                |      Blocking:
------------------------------------------------+--------------------------

Comment (by Edward Z. Yang <ezyang@…>):

 In [changeset:"af4d99803ea7676f88f250ad56a8c31c1c8cd5bc/ghc"]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="af4d99803ea7676f88f250ad56a8c31c1c8cd5bc"
 Don't do a half-hearted recompilation check in compileOne

 Summary:
 The isNothing maybe_old_linkable check predates
 48bc81ad466edfc80237015dbe5d78ba70eb5095, which fixed #481 by requiring
 recompilation information to be passed in as an argument to compileOne.
 As a result, the check here is redundant: the client has already taken
 a look at the object file to see if it is available or not.

 Signed-off-by: Edward Z. Yang <ezyang at cs.stanford.edu>

 Test Plan: validate

 Reviewers: simonmar, austin

 Subscribers: carter, thomie

 Differential Revision: https://phabricator.haskell.org/D594
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/481#comment:15>
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