[GHC] #10053: Regression on MacOS platform, error in ghci calling main after loading compiled code: "Too late for parseStaticFlags..."

[George Colpitts]

Yes, this is consistent with my investigation. The only place I could find
in the source which emitted the message "Too late for parseStaticFlags..."
was ghc/Main.hs. What puzzled me was why this is a Mac specific bug.

On Tue, Apr 19, 2016 at 10:21 AM GHC <ghc-devs at haskell.org> wrote:

> #10053: Regression on MacOS platform, error  in ghci calling main after
> loading
> compiled code: "Too late for parseStaticFlags..."
> -------------------------------------+-------------------------------------
>         Reporter:  George            |                Owner:  ak3n
>             Type:  bug               |               Status:  new
>         Priority:  normal            |            Milestone:
>        Component:  GHCi              |              Version:  7.10.1-rc2
>       Resolution:                    |             Keywords:
> Operating System:  MacOS X           |         Architecture:  x86_64
>  Type of failure:  Incorrect result  |  (amd64)
>   at runtime                         |            Test Case:
>       Blocked By:                    |             Blocking:
>  Related Tickets:                    |  Differential Rev(s):
>        Wiki Page:                    |
> -------------------------------------+-------------------------------------
>
> Comment (by ak3n):
>
>  Replying to [comment:17 bgamari]:
>  > ak3n, could you elaborate?
>
>  This error is raised in
>  [https://github.com/ghc/ghc/blob/master/compiler/main/StaticFlags.hs#L80
>  compiler/main/Staticflags.hs], when parseStaticFlags is called in
>  [https://github.com/ghc/ghc/blob/master/ghc/Main.hs#L113 ghc/Main.hs].
>
>  So, this code is called two times: on ghci start and on "main" input
>  statement.
>
>  It looks like, linker replaces "main" from the loaded module
>  with "main" of ghc.
>
> --
> Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10053#comment:18>
> GHC <http://www.haskell.org/ghc/>
> The Glasgow Haskell Compiler
>
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