[GHC] #2057: inconsistent .hi file error gets ignored

[GHC]

#2057: inconsistent .hi file error gets ignored
----------------------+-----------------------------------------------------
 Reporter:  duncan    |          Owner:         
     Type:  bug       |         Status:  new    
 Priority:  normal    |      Milestone:         
Component:  Compiler  |        Version:  6.8.2  
 Severity:  normal    |     Resolution:         
 Keywords:            |     Difficulty:  Unknown
 Testcase:            |   Architecture:  Unknown
       Os:  Unknown   |  
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Changes (by simonmar):

  * difficulty:  => Unknown

Comment:

 I'm not sure that "fixing" this by having the compilation fail is the
 right thing to do.  GHC in one-shot mode is working on the assumption that
 the dependencies of the current module are up-to-date, and it is the
 user's responsibility to get that right.  Given this assumption, GHC
 buries the code that typechecks interface declarations into thunks that
 might be evaluated at any time, so to have one of these throw an exception
 might lead to any number of strange and hard-to-reproduce problems - we
 might be half-way through some IO operation, and who knows what will
 happen if we abort.

 Arguably you're getting strange and hard-to-reproduce problems anyway, and
 it might be better to fail earlier.  It just scares me a bit.

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/2057#comment:1>
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