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  • Glasgow Haskell Compiler
  • GHCGHC
  • Issues
  • #7097

Closed
Open
Created Jul 25, 2012 by nus@trac-nus

linker fails to load package with binding to foreign library

GHCI is unable to load 'network' package on Windows. The versions:

$ ghci --version
The Glorious Glasgow Haskell Compilation System, version 7.4.2
$ ghc-pkg list network
c:/mnt/data1/ghc32b\lib\package.conf.d:
    network-2.3.0.14

The test code:

import Network

main = withSocketsDo $ do listenOn (PortNumber 3333) -- >>= accept

The failure:

> ghci winsock-load-failure.hs
GHCi, version 7.4.2: http://www.haskell.org/ghc/  :? for help
Loading package ghc-prim ... linking ... done.
Loading package integer-gmp ... linking ... done.
Loading package base ... linking ... done.
[1 of 1] Compiling Main             ( winsock-crash.hs, interpreted )
Ok, modules loaded: Main.
*Main> main
Loading package bytestring-0.9.2.1 ... linking ... done.
Loading package transformers-0.3.0.0 ... linking ... done.
Loading package mtl-2.1.2 ... linking ... done.
Loading package array-0.4.0.0 ... linking ... done.
Loading package deepseq-1.3.0.0 ... linking ... done.
Loading package text-0.11.2.2 ... linking ... done.
Loading package parsec-3.1.3 ... linking ... done.
Loading package network-2.3.0.14 ... linking ... <interactive>: C:\mnt\data1\ghc32b\network-2.3.0.14\ghc-7.4.2\HSnetwork-2.3.0.14.o: unknown symbol `__imp__WSACleanup'
ghc.exe: unable to load package `network-2.3.0.14'

The load trace log ('+RTS -Dl'):

[...snip...]
lookupSymbol: looking up __imp__WSACleanup@0
initLinker: start
initLinker: idempotent return
lookupSymbol: symbol not found
<interactive>: C:\mnt\data1\ghc32b\network-2.3.0.14\ghc-7.4.2\HSnetwork-2.3.0.14.o: unknown symbol `__imp__WSACleanup'
[...snip...]

The symbol to be resolved:

$ nm network-2.3.0.14/ghc-7.4.2/HSnetwork-2.3.0.14.o |grep WSACleanup
         U __imp__WSACleanup@0

The actual symbol in the foreign library:

$ objdump -p  /c/Windows/System32/ws2_32.dll
c:/Windows/System32/ws2_32.dll:     file format pei-i386
[...snip...]
[Ordinal/Name Pointer] Table
[...snip...]
        [ 115] WSACleanup
[...snip...]

The test snippet only works when compiled by ghc (so the resulting binary is produced by ld.bfd).

Trac metadata
Trac field Value
Version 7.4.2
Type Bug
TypeOfFailure OtherFailure
Priority normal
Resolution Unresolved
Component Runtime System
Test case
Differential revisions
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Blocking
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