#10376: arm/linux linking failure -------------------------------------+--------------------------------- Reporter: erikd | Owner: Type: bug | Status: new Priority: normal | Milestone: 7.12.1 Component: Compiler | Version: 7.11 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: arm Type of failure: Other | Test Case: Blocked By: | Blocking: Related Tickets: #10464 | Differential Revisions: -------------------------------------+--------------------------------- Comment (by k-bx): Steps to reproduce in case you don't have an access to an ARM machine: 1. Get a $3.40/month [http://techcrunch.com/2015/09/02/scaleway-now- provides-crazy-cheap-virtual-private-servers-starting-at-3-40-per-month/ dedicated ARM server] (sorry if it sounds like an ad) 2. Install [https://packages.debian.org/experimental/armhf/ghc/download GHC from debian experimental] 3. {{{ # uname -a Linux arm 4.1.6-249 #1 SMP Mon Aug 31 12:34:47 UTC 2015 armv7l armv7l armv7l GNU/Linux # cabal install text # cat Main.hs {-# LANGUAGE OverloadedStrings #-} module Main where import qualified Data.Text.IO as T main :: IO () main = do T.putStrLn "hello world" # ghc -fforce-recomp Main.hs [1 of 1] Compiling Main ( Main.hs, Main.o ) Linking Main ... /usr/bin/ld.gold: warning: cannot scan executable section 1 of /root/.cabal/lib/arm-linux- ghc-7.10.2/text-1.2.1.3/libHStext-1.2.1.3-1l1AN4I48k37RaQ6fm6CEh.a(Text.o) for Cortex-A8 erratum because it has no mapping symbols. /usr/bin/ld.gold: warning: cannot scan executable section 1 of /root/.cabal/lib/arm-linux- ghc-7.10.2/text-1.2.1.3/libHStext-1.2.1.3-1l1AN4I48k37RaQ6fm6CEh.a(Array.o) for Cortex-A8 erratum because it has no mapping symbols. /usr/bin/ld.gold: warning: cannot scan executable section 1 of /root/.cabal/lib/arm-linux- ghc-7.10.2/text-1.2.1.3/libHStext-1.2.1.3-1l1AN4I48k37RaQ6fm6CEh.a(Encoding.o) for Cortex-A8 erratum because it has no mapping symbols. /usr/bin/ld.gold: warning: cannot scan executable section 1 of /root/.cabal/lib/arm-linux- ghc-7.10.2/text-1.2.1.3/libHStext-1.2.1.3-1l1AN4I48k37RaQ6fm6CEh.a(Error.o) for Cortex-A8 erratum because it has no mapping symbols. /usr/bin/ld.gold: warning: cannot scan executable section 1 of /root/.cabal/lib/arm-linux- ghc-7.10.2/text-1.2.1.3/libHStext-1.2.1.3-1l1AN4I48k37RaQ6fm6CEh.a(IO.o) for Cortex-A8 erratum because it has no mapping symbols. /usr/bin/ld.gold: warning: cannot scan executable section 1 of /root/.cabal/lib/arm-linux- ghc-7.10.2/text-1.2.1.3/libHStext-1.2.1.3-1l1AN4I48k37RaQ6fm6CEh.a(Internal.o) for Cortex-A8 erratum because it has no mapping symbols. /usr/bin/ld.gold: warning: cannot scan executable section 1 of /root/.cabal/lib/arm-linux- ghc-7.10.2/text-1.2.1.3/libHStext-1.2.1.3-1l1AN4I48k37RaQ6fm6CEh.a(Fusion.o) for Cortex-A8 erratum because it has no mapping symbols. /usr/bin/ld.gold: warning: cannot scan executable section 1 of /root/.cabal/lib/arm-linux- ghc-7.10.2/text-1.2.1.3/libHStext-1.2.1.3-1l1AN4I48k37RaQ6fm6CEh.a(CaseMapping.o) for Cortex-A8 erratum because it has no mapping symbols. /usr/bin/ld.gold: warning: cannot scan executable section 1 of /root/.cabal/lib/arm-linux- ghc-7.10.2/text-1.2.1.3/libHStext-1.2.1.3-1l1AN4I48k37RaQ6fm6CEh.a(Common.o) for Cortex-A8 erratum because it has no mapping symbols. /usr/bin/ld.gold: warning: cannot scan executable section 1 of /root/.cabal/lib/arm-linux- ghc-7.10.2/text-1.2.1.3/libHStext-1.2.1.3-1l1AN4I48k37RaQ6fm6CEh.a(Size.o) for Cortex-A8 erratum because it has no mapping symbols. /usr/bin/ld.gold: warning: cannot scan executable section 1 of /root/.cabal/lib/arm-linux- ghc-7.10.2/text-1.2.1.3/libHStext-1.2.1.3-1l1AN4I48k37RaQ6fm6CEh.a(Types.o) for Cortex-A8 erratum because it has no mapping symbols. /usr/bin/ld.gold: warning: cannot scan executable section 1 of /root/.cabal/lib/arm-linux- ghc-7.10.2/text-1.2.1.3/libHStext-1.2.1.3-1l1AN4I48k37RaQ6fm6CEh.a(IO.o) for Cortex-A8 erratum because it has no mapping symbols. /usr/bin/ld.gold: warning: cannot scan executable section 1 of /root/.cabal/lib/arm-linux- ghc-7.10.2/text-1.2.1.3/libHStext-1.2.1.3-1l1AN4I48k37RaQ6fm6CEh.a(Unsafe.o) for Cortex-A8 erratum because it has no mapping symbols. /usr/bin/ld.gold: warning: cannot scan executable section 1 of /root/.cabal/lib/arm-linux- ghc-7.10.2/text-1.2.1.3/libHStext-1.2.1.3-1l1AN4I48k37RaQ6fm6CEh.a(Show.o) for Cortex-A8 erratum because it has no mapping symbols. /usr/bin/ld.gold: warning: cannot scan executable section 1 of /root/.cabal/lib/arm-linux- ghc-7.10.2/text-1.2.1.3/libHStext-1.2.1.3-1l1AN4I48k37RaQ6fm6CEh.a(Text.o) for Cortex-A8 erratum because it has no mapping symbols. /usr/bin/ld.gold: warning: cannot scan executable section 1 of /root/.cabal/lib/arm-linux- ghc-7.10.2/text-1.2.1.3/libHStext-1.2.1.3-1l1AN4I48k37RaQ6fm6CEh.a(Array.o) for Cortex-A8 erratum because it has no mapping symbols. /usr/bin/ld.gold: warning: cannot scan executable section 1 of /root/.cabal/lib/arm-linux- ghc-7.10.2/text-1.2.1.3/libHStext-1.2.1.3-1l1AN4I48k37RaQ6fm6CEh.a(Encoding.o) for Cortex-A8 erratum because it has no mapping symbols. /usr/bin/ld.gold: warning: cannot scan executable section 1 of /root/.cabal/lib/arm-linux- ghc-7.10.2/text-1.2.1.3/libHStext-1.2.1.3-1l1AN4I48k37RaQ6fm6CEh.a(Error.o) for Cortex-A8 erratum because it has no mapping symbols. /usr/bin/ld.gold: warning: cannot scan executable section 1 of /root/.cabal/lib/arm-linux- ghc-7.10.2/text-1.2.1.3/libHStext-1.2.1.3-1l1AN4I48k37RaQ6fm6CEh.a(IO.o) for Cortex-A8 erratum because it has no mapping symbols. /usr/bin/ld.gold: warning: cannot scan executable section 1 of /root/.cabal/lib/arm-linux- ghc-7.10.2/text-1.2.1.3/libHStext-1.2.1.3-1l1AN4I48k37RaQ6fm6CEh.a(Internal.o) for Cortex-A8 erratum because it has no mapping symbols. /usr/bin/ld.gold: warning: cannot scan executable section 1 of /root/.cabal/lib/arm-linux- ghc-7.10.2/text-1.2.1.3/libHStext-1.2.1.3-1l1AN4I48k37RaQ6fm6CEh.a(Fusion.o) for Cortex-A8 erratum because it has no mapping symbols. /usr/bin/ld.gold: warning: cannot scan executable section 1 of /root/.cabal/lib/arm-linux- ghc-7.10.2/text-1.2.1.3/libHStext-1.2.1.3-1l1AN4I48k37RaQ6fm6CEh.a(CaseMapping.o) for Cortex-A8 erratum because it has no mapping symbols. /usr/bin/ld.gold: warning: cannot scan executable section 1 of /root/.cabal/lib/arm-linux- ghc-7.10.2/text-1.2.1.3/libHStext-1.2.1.3-1l1AN4I48k37RaQ6fm6CEh.a(Common.o) for Cortex-A8 erratum because it has no mapping symbols. /usr/bin/ld.gold: warning: cannot scan executable section 1 of /root/.cabal/lib/arm-linux- ghc-7.10.2/text-1.2.1.3/libHStext-1.2.1.3-1l1AN4I48k37RaQ6fm6CEh.a(Size.o) for Cortex-A8 erratum because it has no mapping symbols. /usr/bin/ld.gold: warning: cannot scan executable section 1 of /root/.cabal/lib/arm-linux- ghc-7.10.2/text-1.2.1.3/libHStext-1.2.1.3-1l1AN4I48k37RaQ6fm6CEh.a(Types.o) for Cortex-A8 erratum because it has no mapping symbols. /usr/bin/ld.gold: warning: cannot scan executable section 1 of /root/.cabal/lib/arm-linux- ghc-7.10.2/text-1.2.1.3/libHStext-1.2.1.3-1l1AN4I48k37RaQ6fm6CEh.a(IO.o) for Cortex-A8 erratum because it has no mapping symbols. /usr/bin/ld.gold: warning: cannot scan executable section 1 of /root/.cabal/lib/arm-linux- ghc-7.10.2/text-1.2.1.3/libHStext-1.2.1.3-1l1AN4I48k37RaQ6fm6CEh.a(Unsafe.o) for Cortex-A8 erratum because it has no mapping symbols. /usr/bin/ld.gold: warning: cannot scan executable section 1 of /root/.cabal/lib/arm-linux- ghc-7.10.2/text-1.2.1.3/libHStext-1.2.1.3-1l1AN4I48k37RaQ6fm6CEh.a(Show.o) for Cortex-A8 erratum because it has no mapping symbols. /usr/bin/ld.gold: warning: cannot scan executable section 1 of /root/.cabal/lib/arm-linux- ghc-7.10.2/text-1.2.1.3/libHStext-1.2.1.3-1l1AN4I48k37RaQ6fm6CEh.a(Text.o) for Cortex-A8 erratum because it has no mapping symbols. /usr/bin/ld.gold: warning: cannot scan executable section 1 of /root/.cabal/lib/arm-linux- ghc-7.10.2/text-1.2.1.3/libHStext-1.2.1.3-1l1AN4I48k37RaQ6fm6CEh.a(Array.o) for Cortex-A8 erratum because it has no mapping symbols. /usr/bin/ld.gold: warning: cannot scan executable section 1 of /root/.cabal/lib/arm-linux- ghc-7.10.2/text-1.2.1.3/libHStext-1.2.1.3-1l1AN4I48k37RaQ6fm6CEh.a(Encoding.o) for Cortex-A8 erratum because it has no mapping symbols. /usr/bin/ld.gold: warning: cannot scan executable section 1 of /root/.cabal/lib/arm-linux- ghc-7.10.2/text-1.2.1.3/libHStext-1.2.1.3-1l1AN4I48k37RaQ6fm6CEh.a(Error.o) for Cortex-A8 erratum because it has no mapping symbols. /usr/bin/ld.gold: warning: cannot scan executable section 1 of /root/.cabal/lib/arm-linux- ghc-7.10.2/text-1.2.1.3/libHStext-1.2.1.3-1l1AN4I48k37RaQ6fm6CEh.a(IO.o) for Cortex-A8 erratum because it has no mapping symbols. /usr/bin/ld.gold: warning: cannot scan executable section 1 of /root/.cabal/lib/arm-linux- ghc-7.10.2/text-1.2.1.3/libHStext-1.2.1.3-1l1AN4I48k37RaQ6fm6CEh.a(Internal.o) for Cortex-A8 erratum because it has no mapping symbols. /usr/bin/ld.gold: warning: cannot scan executable section 1 of /root/.cabal/lib/arm-linux- ghc-7.10.2/text-1.2.1.3/libHStext-1.2.1.3-1l1AN4I48k37RaQ6fm6CEh.a(Fusion.o) for Cortex-A8 erratum because it has no mapping symbols. /usr/bin/ld.gold: warning: cannot scan executable section 1 of /root/.cabal/lib/arm-linux- ghc-7.10.2/text-1.2.1.3/libHStext-1.2.1.3-1l1AN4I48k37RaQ6fm6CEh.a(CaseMapping.o) for Cortex-A8 erratum because it has no mapping symbols. /usr/bin/ld.gold: warning: cannot scan executable section 1 of /root/.cabal/lib/arm-linux- ghc-7.10.2/text-1.2.1.3/libHStext-1.2.1.3-1l1AN4I48k37RaQ6fm6CEh.a(Common.o) for Cortex-A8 erratum because it has no mapping symbols. /usr/bin/ld.gold: warning: cannot scan executable section 1 of /root/.cabal/lib/arm-linux- ghc-7.10.2/text-1.2.1.3/libHStext-1.2.1.3-1l1AN4I48k37RaQ6fm6CEh.a(Size.o) for Cortex-A8 erratum because it has no mapping symbols. /usr/bin/ld.gold: warning: cannot scan executable section 1 of /root/.cabal/lib/arm-linux- ghc-7.10.2/text-1.2.1.3/libHStext-1.2.1.3-1l1AN4I48k37RaQ6fm6CEh.a(Types.o) for Cortex-A8 erratum because it has no mapping symbols. /usr/bin/ld.gold: warning: cannot scan executable section 1 of /root/.cabal/lib/arm-linux- ghc-7.10.2/text-1.2.1.3/libHStext-1.2.1.3-1l1AN4I48k37RaQ6fm6CEh.a(IO.o) for Cortex-A8 erratum because it has no mapping symbols. /usr/bin/ld.gold: warning: cannot scan executable section 1 of /root/.cabal/lib/arm-linux- ghc-7.10.2/text-1.2.1.3/libHStext-1.2.1.3-1l1AN4I48k37RaQ6fm6CEh.a(Unsafe.o) for Cortex-A8 erratum because it has no mapping symbols. /usr/bin/ld.gold: warning: cannot scan executable section 1 of /root/.cabal/lib/arm-linux- ghc-7.10.2/text-1.2.1.3/libHStext-1.2.1.3-1l1AN4I48k37RaQ6fm6CEh.a(Show.o) for Cortex-A8 erratum because it has no mapping symbols. }}} It compiles, just these warnings are quite painful, especially on real- world projects like the ones using yesod, there's just too much output like this. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10376#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler

#10376: arm/linux linking failure -------------------------------------+-------------------------------- Reporter: erikd | Owner: Type: bug | Status: new Priority: normal | Milestone: 8.0.1 Component: Compiler | Version: 7.11 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: arm Type of failure: Other | Test Case: Blocked By: | Blocking: Related Tickets: #10464 | Differential Revisions: -------------------------------------+-------------------------------- Comment (by k-bx): That's weird. Posting more-precise instructions I've just replicated (they're not very precise, but rather "almost", as I did few errors and fixes in them): {{{ ssh new-server, Ubuntu Vivid $ sudo apt-get update $ sudo apt-get dist-upgrade $ sudo apt-get install cabal-install zlib1g-dev $ wget http://ftp.de.debian.org/debian/pool/main/g/ghc/ghc_7.10.2-2_armhf.deb $ sudo dpkg -i ./ghc* $ cabal update $ cabal install cabal-install --ghc-options="-j" (crunch-crunch-crunch, including text installation) $ sudo apt-get install libghc-zlib-dev libghc-zlib-bindings-dev $ echo 'PATH=/root/.cabal/bin:$PATH' >> ~/.profile $ source ~/.profile root@arm2:~# cat TextTest.hs {-# LANGUAGE OverloadedStrings #-} import qualified Data.Text.IO as T main = T.putStrLn "Hell" $ ghc TextTest.hs (warnings here) }}} @thomie please send me your public key so that I could add it to this machine -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10376#comment:5 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler

#10376: arm/linux linking failure -------------------------------------+----------------------------- Reporter: erikd | Owner: Type: bug | Status: new Priority: normal | Milestone: 8.0.1 Component: Compiler | Version: 7.11 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: arm Type of failure: Other | Test Case: Blocked By: | Blocking: Related Tickets: #10464 | Differential Rev(s): -------------------------------------+----------------------------- Comment (by k-bx): @thomie thank you! It helped. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10376#comment:7 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler

#10376: arm/linux linking failure -------------------------------------+----------------------------- Reporter: erikd | Owner: Type: bug | Status: new Priority: normal | Milestone: 8.0.1 Component: Compiler | Version: 7.11 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: arm Type of failure: Other | Test Case: Blocked By: | Blocking: Related Tickets: #10464 | Differential Rev(s): Wiki Page: | -------------------------------------+----------------------------- Comment (by Ben Gamari ): In [changeset:"786d528e8f949daeb62d34e0daa5e35f642065fc/ghc" 786d528e/ghc]: {{{ #!CommitTicketReference repository="ghc" revision="786d528e8f949daeb62d34e0daa5e35f642065fc" TcTypeable: Don't use bogus fingerprints when suppress-uniques is enabled Previously the Typeable implementation would intentionally create TyCon representations with bogus fingerprints to avoid fingerprints (which may change often) from leaking into test output. As pointed out by Richard in #10376 this is very bad as simply enabling a debug flag, `-dsuppress-uniques`, completely breaks the soundness of `Typeable`! This patch removes this behavior and replaces it with logic in the testsuite driver to filter out spurious changes due to Typeable representations. Test Plan: Validate Reviewers: austin, simonpj, goldfire Reviewed By: goldfire Subscribers: thomie Differential Revision: https://phabricator.haskell.org/D1629 GHC Trac Issues: #10376 }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10376#comment:9 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler

#10376: arm/linux linking failure -------------------------------------+------------------------------ Reporter: erikd | Owner: Type: bug | Status: closed Priority: normal | Milestone: 8.0.1 Component: Compiler | Version: 7.11 Resolution: fixed | Keywords: Operating System: Unknown/Multiple | Architecture: arm Type of failure: Other | Test Case: Blocked By: | Blocking: Related Tickets: #10464 | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------ Changes (by bgamari): * status: new => closed * resolution: => fixed Comment: I believe this has been fixed with the resolution of #11205, Phab:D1599. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10376#comment:11 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler