[GHC] #9277: GHCi panic: Loading temp shared object failed: Symbol not found

[GHC]

#9277: GHCi panic: Loading temp shared object failed: Symbol not found
----------------------------------+---------------------------------
       Reporter:  mietek          |             Owner:
           Type:  bug             |            Status:  new
       Priority:  normal          |         Milestone:
      Component:  GHCi            |           Version:  7.8.2
       Keywords:                  |  Operating System:  MacOS X
   Architecture:  x86_64 (amd64)  |   Type of failure:  None/Unknown
     Difficulty:  Unknown         |         Test Case:
     Blocked By:                  |          Blocking:
Related Tickets:  #9034, #8935    |
----------------------------------+---------------------------------
 When given a Objective-C object file referencing a symbol available in a
 system framework, GHCi panics saying it can't find the symbol the object
 file relies on.

 {{{
 $ cat >foo.m <<EOF
 #import <Foundation/Foundation.h>

 BOOL is_main_thread()
 {
   return [NSThread isMainThread];
 }
 EOF
 }}}
 {{{
 $ clang -c -o foo.o foo.m
 }}}
 {{{
 $ ghci -v -framework Foundation foo.o
 GHCi, version 7.8.2: http://www.haskell.org/ghc/  :? for help
 Glasgow Haskell Compiler, Version 7.8.2, stage 2 booted by GHC version
 7.6.3
 Using binary package database:
 /opt/ghc-7.8.2/lib/ghc-7.8.2/package.conf.d/package.cache
 wired-in package ghc-prim mapped to ghc-
 prim-0.3.1.0-948744e1f99cc8bcc7c7d3ba60c7c2d8
 wired-in package integer-gmp mapped to integer-
 gmp-0.5.1.0-dc47f6b546fc171f67a7f7d311684a99
 wired-in package base mapped to
 base-4.7.0.0-a333addb6892f3cc2e6baa5ec782bd04
 wired-in package rts mapped to builtin_rts
 wired-in package template-haskell mapped to template-
 haskell-2.9.0.0-ed6ecfb467e6936688bb20f968f702e1
 wired-in package dph-seq not found.
 wired-in package dph-par not found.
 Hsc static flags:
 Loading package ghc-prim ... linking ... done.
 Loading package integer-gmp ... linking ... done.
 *** gcc:
 /usr/bin/gcc -m64 -fno-stack-protector -DTABLES_NEXT_TO_CODE
 -L/opt/ghc-7.8.2/lib/ghc-7.8.2/base-4.7.0.0 --print-file-name
 libiconv.dylib
 Loading package base ... linking ... done.
 Loading object (static) foo.o ... Created temporary directory:
 /var/folders/26/0tzj1txn0vb_0061l4z4rsmr0000gn/T/ghc36377_0
 *** Linker:
 /usr/bin/gcc -m64 -fno-stack-protector -DTABLES_NEXT_TO_CODE -m64
 -dynamiclib -o
 /var/folders/26/0tzj1txn0vb_0061l4z4rsmr0000gn/T/ghc36377_0/ghc36377_1.dylib
 foo.o -undefined dynamic_lookup -single_module -install_name
 '@rpath/ghc36377_1.dylib' -L/opt/ghc-7.8.2/lib/ghc-7.8.2/base-4.7.0.0
 -Wl,-rpath -Wl,/opt/ghc-7.8.2/lib/ghc-7.8.2/base-4.7.0.0
 -L/opt/ghc-7.8.2/lib/ghc-7.8.2/integer-gmp-0.5.1.0 -Wl,-rpath
 -Wl,/opt/ghc-7.8.2/lib/ghc-7.8.2/integer-gmp-0.5.1.0
 -L/opt/ghc-7.8.2/lib/ghc-7.8.2/ghc-prim-0.3.1.0 -Wl,-rpath
 -Wl,/opt/ghc-7.8.2/lib/ghc-7.8.2/ghc-prim-0.3.1.0
 -L/opt/ghc-7.8.2/lib/ghc-7.8.2/rts-1.0 -Wl,-rpath
 -Wl,/opt/ghc-7.8.2/lib/ghc-7.8.2/rts-1.0 -lHSbase-4.7.0.0-ghc7.8.2
 -lHSinteger-gmp-0.5.1.0-ghc7.8.2 -lHSghc-prim-0.3.1.0-ghc7.8.2 -liconv
 *** Deleting temp files:
 Deleting:
 /var/folders/26/0tzj1txn0vb_0061l4z4rsmr0000gn/T/ghc36377_0/ghc36377_1.dylib
 *** Deleting temp dirs:
 Deleting: /var/folders/26/0tzj1txn0vb_0061l4z4rsmr0000gn/T/ghc36377_0
 ghc: panic! (the 'impossible' happened)
   (GHC version 7.8.2 for x86_64-apple-darwin):
         Loading temp shared object failed:
 dlopen(/var/folders/26/0tzj1txn0vb_0061l4z4rsmr0000gn/T/ghc36377_0/ghc36377_1.dylib,
 9): Symbol not found: _OBJC_CLASS_$_NSThread
   Referenced from:
 /var/folders/26/0tzj1txn0vb_0061l4z4rsmr0000gn/T/ghc36377_0/ghc36377_1.dylib
   Expected in: flat namespace
  in
 /var/folders/26/0tzj1txn0vb_0061l4z4rsmr0000gn/T/ghc36377_0/ghc36377_1.dylib

 Please report this as a GHC bug:  http://www.haskell.org/ghc/reportabug
 }}}

 Note omitting `-framework Foundation` makes no difference to the output.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9277>
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