On Fri, Nov 14, 2008 at 5:36 AM, Simon Marlow wrote:

Compiling and running executables should work fine, only GHCi is affected by the above bug. Could you try -v when linking and see what stage is hanging?

Here is an example with a standard cabal Setup.lhs file. It outputs the following and then hangs. When I look at "top" then there is an "ld" process taking up almost zero cpu, but hundreds of MB of memory. $ ghc -v --make Setup.lhs Glasgow Haskell Compiler, Version 6.8.2, for Haskell 98, stage 2 booted by GHC version 6.8.2 Using package config file: /usr/lib/ghc-6.8.2/package.conf wired-in package base mapped to base-3.0.1.0 wired-in package rts mapped to rts-1.0 wired-in package haskell98 mapped to haskell98-1.0.1.0 wired-in package template-haskell mapped to template-haskell-2.2.0.0 wired-in package ndp not found. Hsc static flags: -static *** Chasing dependencies: Chasing modules from: Setup.lhs Created temporary directory: /tmp/ghc3404_0 *** Literate pre-processor: /usr/lib/ghc-6.8.2/unlit -h Setup.lhs Setup.lhs /tmp/ghc3404_0/ghc3404_0.lpp Stable obj: [] Stable BCO: [] Ready for upsweep [NONREC ModSummary { ms_hs_date = Wed Dec 26 03:40:53 PST 2007 ms_mod = main:Main, ms_imps = [Distribution.Simple] ms_srcimps = [] }] compile: input file /tmp/ghc3404_0/ghc3404_0.lpp *** Checking old interface for main:Main: [1 of 1] Compiling Main ( Setup.lhs, Setup.o ) *** Parser: *** Renamer/typechecker: *** Desugar: Result size = 8 *** Simplify: Result size = 6 Result size = 6 *** Tidy Core: Result size = 6 writeBinIface: 1 Names writeBinIface: 17 dict entries *** CorePrep: Result size = 6 *** Stg2Stg: *** CodeGen: *** CodeOutput: *** Assembler: gcc -I. -c /tmp/ghc3404_0/ghc3404_0.s -o Setup.o *** Deleting temp files: Deleting: /tmp/ghc3404_0/ghc3404_0.s Upsweep completely successful. *** Deleting temp files: Deleting: link: linkables are ... LinkableM (Fri Nov 14 07:13:35 PST 2008) main:Main [DotO Setup.o] Linking Setup ... *** Linker: gcc -v -o Setup Setup.o -L/usr/lib/ghc-6.8.2/lib/Cabal-1.2.3.0 -L/usr/lib/ghc-6.8.2/lib/containers-0.1.0.1 -L/usr/lib/ghc-6.8.2/lib/array-0.1.0.0 -L/usr/lib/ghc-6.8.2/lib/process-1.0.0.0 -L/usr/lib/ghc-6.8.2/lib/unix-2.3.0.0 -L/usr/lib/ghc-6.8.2/lib/directory-1.0.0.0 -L/usr/lib/ghc-6.8.2/lib/filepath-1.1.0.0 -L/usr/lib/ghc-6.8.2/lib/old-time-1.0.0.0 -L/usr/lib/ghc-6.8.2/lib/old-locale-1.0.0.0 -L/usr/lib/ghc-6.8.2/lib/pretty-1.0.0.0 -L/usr/lib/ghc-6.8.2/lib/base-3.0.1.0 -L/usr/lib/ghc-6.8.2 -lHSCabal-1.2.3.0 -lHScontainers-0.1.0.1 -lHSarray-0.1.0.0 -lHSprocess-1.0.0.0 -lHSunix-2.3.0.0 -lutil -ldl -lHSdirectory-1.0.0.0 -lHSfilepath-1.1.0.0 -lHSold-time-1.0.0.0 -lHSold-locale-1.0.0.0 -lHSpretty-1.0.0.0 -lHSbase-3.0.1.0 -lHSrts -lm -lgmp -ldl -lrt -u base_GHCziBase_Izh_static_info -u base_GHCziBase_Czh_static_info -u base_GHCziFloat_Fzh_static_info -u base_GHCziFloat_Dzh_static_info -u base_GHCziPtr_Ptr_static_info -u base_GHCziWord_Wzh_static_info -u base_GHCziInt_I8zh_static_info -u base_GHCziInt_I16zh_static_info -u base_GHCziInt_I32zh_static_info -u base_GHCziInt_I64zh_static_info -u base_GHCziWord_W8zh_static_info -u base_GHCziWord_W16zh_static_info -u base_GHCziWord_W32zh_static_info -u base_GHCziWord_W64zh_static_info -u base_GHCziStable_StablePtr_static_info -u base_GHCziBase_Izh_con_info -u base_GHCziBase_Czh_con_info -u base_GHCziFloat_Fzh_con_info -u base_GHCziFloat_Dzh_con_info -u base_GHCziPtr_Ptr_con_info -u base_GHCziPtr_FunPtr_con_info -u base_GHCziStable_StablePtr_con_info -u base_GHCziBase_False_closure -u base_GHCziBase_True_closure -u base_GHCziPack_unpackCString_closure -u base_GHCziIOBase_stackOverflow_closure -u base_GHCziIOBase_heapOverflow_closure -u base_GHCziIOBase_NonTermination_closure -u base_GHCziIOBase_BlockedOnDeadMVar_closure -u base_GHCziIOBase_BlockedIndefinitely_closure -u base_GHCziIOBase_Deadlock_closure -u base_GHCziIOBase_NestedAtomically_closure -u base_GHCziWeak_runFinalizzerBatch_closure -u base_GHCziConc_ensureIOManagerIsRunning_closure Using built-in specs. Target: x86_64-unknown-linux-gnu Configured with: ../configure --prefix=/usr --enable-shared --enable-languages=c,c++,fortran,objc,obj-c++,treelang --enable-threads=posix --mandir=/usr/share/man --enable-__cxa_atexit --disable-multilib --libdir=/usr/lib --libexecdir=/usr/lib --enable-clocale=gnu --disable-libstdcxx-pch --with-tune=generic Thread model: posix gcc version 4.2.3 /usr/lib/gcc/x86_64-unknown-linux-gnu/4.2.3/collect2 --eh-frame-hdr -m elf_x86_64 --hash-style=both -dynamic-linker /lib/ld-linux-x86-64.so.2 -o Setup -u base_GHCziBase_Izh_static_info -u base_GHCziBase_Czh_static_info -u base_GHCziFloat_Fzh_static_info -u base_GHCziFloat_Dzh_static_info -u base_GHCziPtr_Ptr_static_info -u base_GHCziWord_Wzh_static_info -u base_GHCziInt_I8zh_static_info -u base_GHCziInt_I16zh_static_info -u base_GHCziInt_I32zh_static_info -u base_GHCziInt_I64zh_static_info -u base_GHCziWord_W8zh_static_info -u base_GHCziWord_W16zh_static_info -u base_GHCziWord_W32zh_static_info -u base_GHCziWord_W64zh_static_info -u base_GHCziStable_StablePtr_static_info -u base_GHCziBase_Izh_con_info -u base_GHCziBase_Czh_con_info -u base_GHCziFloat_Fzh_con_info -u base_GHCziFloat_Dzh_con_info -u base_GHCziPtr_Ptr_con_info -u base_GHCziPtr_FunPtr_con_info -u base_GHCziStable_StablePtr_con_info -u base_GHCziBase_False_closure -u base_GHCziBase_True_closure -u base_GHCziPack_unpackCString_closure -u base_GHCziIOBase_stackOverflow_closure -u base_GHCziIOBase_heapOverflow_closure -u base_GHCziIOBase_NonTermination_closure -u base_GHCziIOBase_BlockedOnDeadMVar_closure -u base_GHCziIOBase_BlockedIndefinitely_closure -u base_GHCziIOBase_Deadlock_closure -u base_GHCziIOBase_NestedAtomically_closure -u base_GHCziWeak_runFinalizzerBatch_closure -u base_GHCziConc_ensureIOManagerIsRunning_closure /usr/lib/gcc/x86_64-unknown-linux-gnu/4.2.3/../../../../lib/crt1.o /usr/lib/gcc/x86_64-unknown-linux-gnu/4.2.3/../../../../lib/crti.o /usr/lib/gcc/x86_64-unknown-linux-gnu/4.2.3/crtbegin.o -L/usr/lib/ghc-6.8.2/lib/Cabal-1.2.3.0 -L/usr/lib/ghc-6.8.2/lib/containers-0.1.0.1 -L/usr/lib/ghc-6.8.2/lib/array-0.1.0.0 -L/usr/lib/ghc-6.8.2/lib/process-1.0.0.0 -L/usr/lib/ghc-6.8.2/lib/unix-2.3.0.0 -L/usr/lib/ghc-6.8.2/lib/directory-1.0.0.0 -L/usr/lib/ghc-6.8.2/lib/filepath-1.1.0.0 -L/usr/lib/ghc-6.8.2/lib/old-time-1.0.0.0 -L/usr/lib/ghc-6.8.2/lib/old-locale-1.0.0.0 -L/usr/lib/ghc-6.8.2/lib/pretty-1.0.0.0 -L/usr/lib/ghc-6.8.2/lib/base-3.0.1.0 -L/usr/lib/ghc-6.8.2 -L/usr/lib/gcc/x86_64-unknown-linux-gnu/4.2.3 -L/usr/lib/gcc/x86_64-unknown-linux-gnu/4.2.3 -L/usr/lib/gcc/x86_64-unknown-linux-gnu/4.2.3/../../../../lib -L/lib/../lib -L/usr/lib/../lib -L/usr/lib/gcc/x86_64-unknown-linux-gnu/4.2.3/../../.. Setup.o -lHSCabal-1.2.3.0 -lHScontainers-0.1.0.1 -lHSarray-0.1.0.0 -lHSprocess-1.0.0.0 -lHSunix-2.3.0.0 -lutil -ldl -lHSdirectory-1.0.0.0 -lHSfilepath-1.1.0.0 -lHSold-time-1.0.0.0 -lHSold-locale-1.0.0.0 -lHSpretty-1.0.0.0 -lHSbase-3.0.1.0 -lHSrts -lm -lgmp -ldl -lrt -lgcc --as-needed -lgcc_s --no-as-needed -lc -lgcc --as-needed -lgcc_s --no-as-needed /usr/lib/gcc/x86_64-unknown-linux-gnu/4.2.3/crtend.o /usr/lib/gcc/x86_64-unknown-linux-gnu/4.2.3/../../../../lib/crtn.o