#5748: ghci segfault on OS X after dlsym failed lookup
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Reporter: gwright | Owner: gwright
Type: bug | Status: patch
Priority: normal | Milestone:
Component: GHCi | Version: 7.2.1
Keywords: | Os: MacOS X
Architecture: Unknown/Multiple | Failure: GHCi crash
Difficulty: Unknown | Testcase:
Blockedby: | Blocking:
Related: |
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Comment(by gwright):
Replying to [comment:9 simonmar]:
> Thanks, I'll look at your patch.
>
> It's hard to know whether `.hs-boot` files are causing your missing
symbol, but if all you're doing is compiling a library and loading it into
GHCi, a missing symbol definitely indicates a bug in GHC. Can you reduce
the example as much as possible and attach it?
It seems that the original bug is not a bug, but an infelicity in cabal.
The library is built using cabal. Cabal compiles all of the modules, but
if a module is left off the {{{Other-modules}}} list, it isn't linked.
This causes the unresolved symbol. I had been refactoring the modules in
my library and hadn't noticed that one was left off the {{{Other-
modules}}} list.
It's annoying that cabal doesn't produce a warning when it fails to link a
module that has been compiled. However, the only real bug here --- the
linker segfault --- is fixed by the patch. When the patch is applied this
ticket can be closed.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5748#comment:10>
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