[GHC] #9277: GHCi panic: Loading temp shared object failed: Symbol not found
GHC
ghc-devs at haskell.org
Mon Jul 7 11:38:40 UTC 2014
#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
Resolution: | Keywords: panic, dynamic linking
Operating System: MacOS X | Architecture: x86_64 (amd64)
Type of failure: GHCi crash | Difficulty: Unknown
Test Case: | Blocked By:
Blocking: | Related Tickets: #9034, #9074, #8935
-------------------------------+------------------------------------------
Description changed by mietek:
Old description:
> 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.
New description:
When given a Objective-C object file referencing a symbol available in a
system framework, interactive GHCi 7.8.2 panics saying it can't find the
symbol the object file relies on.
Start with an Objective-C source file, defining a function to be used via
the FFI:
{{{
$ cat >foo.m <<EOF
#import <Foundation/Foundation.h>
BOOL is_main_thread()
{
return [NSThread isMainThread];
}
EOF
}}}
{{{
$ cat >Main.hs <<EOF
module Main where
foreign import ccall "is_main_thread" isMainThread :: IO Bool
main :: IO ()
main = do
mt <- isMainThread
print mt
EOF
}}}
Non-interactive GHC 7.8.2 works as expected:
{{{
$ clang -c -o foo.o foo.m
}}}
{{{
$ ghc -framework Foundation -o foo foo.o Main.hs
[1 of 1] Compiling Main ( Main.hs, Main.o )
Linking foo ...
}}}
{{{
$ ./foo
True
}}}
Interactive GHCi 7.8.2 panics:
{{{
$ ghci -v -framework Foundation foo.o Main.hs
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/ghc37622_0
*** Linker:
/usr/bin/gcc -m64 -fno-stack-protector -DTABLES_NEXT_TO_CODE -m64
-dynamiclib -o
/var/folders/26/0tzj1txn0vb_0061l4z4rsmr0000gn/T/ghc37622_0/ghc37622_1.dylib
foo.o -undefined dynamic_lookup -single_module -install_name
'@rpath/ghc37622_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/ghc37622_0/ghc37622_1.dylib
*** Deleting temp dirs:
Deleting: /var/folders/26/0tzj1txn0vb_0061l4z4rsmr0000gn/T/ghc37622_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/ghc37622_0/ghc37622_1.dylib,
9): Symbol not found: _OBJC_CLASS_$_NSThread
Referenced from:
/var/folders/26/0tzj1txn0vb_0061l4z4rsmr0000gn/T/ghc37622_0/ghc37622_1.dylib
Expected in: flat namespace
in
/var/folders/26/0tzj1txn0vb_0061l4z4rsmr0000gn/T/ghc37622_0/ghc37622_1.dylib
Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug
}}}
Omitting `-framework Foundation` makes no difference to the output.
--
--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9277#comment:4>
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