#4828: ghci fails to load fat binary archives on OS X
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Reporter: gwright | Owner: igloo
Type: bug | Status: patch
Priority: normal | Milestone: 7.2.1
Component: Runtime System | Version: 7.0.1
Keywords: | Testcase:
Blockedby: | Difficulty:
Os: MacOS X | Blocking:
Architecture: Unknown/Multiple | Failure: GHCi crash
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Comment(by gwright):
Ugh. `loadArchive` is worse than I thought. On OS X (at least) it doesn't
even load the objects modules in the archive. This is because we read from
the archive header the width of the object file name field, not its
length, so we miss the ".o" at the end of the name. I've fixed this, but
there are more problems.
When loading the object modules we get multiply defined symbol errors.
This is because we don't correctly distinguish external symbols (flags
`N_EXT` and `N_SECT` set) and internal symbols (only `N_SECT` set).
I've added a number of debug statements so we can watch what's going on in
detail and will attach that patch to this ticket.
The failure to load any object modules was concealing the error that
should have occurred when reading past the end of an archive in a fat
archive. I still need to fix that.
Good that we're targeting 7.2 for this one.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4828#comment:13>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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