[GHC] #10966: dirtiness checking isn't keeping track of which source file contained Main

[GHC]

#10966: dirtiness checking isn't keeping track of which source file contained Main
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        Reporter:  gueux             |                Owner:
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  7.10.2
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by thomie):

 To reproduce:

 {{{
 $ ghc Devel.hs -o foo

 $ ./foo   # prints: "dev". Ok.

 $ ghc Main.hs -o foo

 $ ./foo   # prints: "not dev". Ok.

 $ ghc Devel.hs -o foo

 $ ./foo   # prints: "not dev". Should print "dev" (this is the bug).
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10966#comment:1>
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