[GHC] #12935: Object code produced by GHC is non-deterministic

[GHC]

#12935: Object code produced by GHC is non-deterministic
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        Reporter:  bgamari           |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.0.2
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D4388
       Wiki Page:                    |
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Comment (by simonmar):

 As I mentioned over on #14769, I don't think relying on the compilation
 order of modules for determinism is the right way to do this. The
 rationale is that the compilation order can change for other reasons: the
 user may invoke GHC on a different set of modules, without changing
 anything about the source code or dependencies of any particular module.

 The determinism property we want is that the output depends only on
 * The source code of a module,
 * Its dependencies,
 * compiler flags that affect the generated code

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12935#comment:19>
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