#14931: Segfault compiling file that uses Template Haskell with -prof -------------------------------------+------------------------------------- Reporter: RyanGlScott | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Profiling | Version: 8.4.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Compile-time | Unknown/Multiple crash or panic | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by nmattia): Ok, this is really strange. I've tried to reproduce the example given in https://ghc.haskell.org/trac/ghc/ticket/8025. In this case, GHC 8.0.2 and 8.2.2 fail with {{{ ByteCodeLink.lookupCE During interactive linking, GHCi couldn't find the following symbol: ... }}} while 8.4.1 (actually, [8.4.0 https://github.com/NixOS/nixpkgs/issues/37026]) ) compiles successfully: {{{ nicolas@nicolas-XPS-13-9370:/tmp/no-code$ cat A.hs {-# LANGUAGE TemplateHaskell #-} module A where a = [|3|] nicolas@nicolas-XPS-13-9370:/tmp/no-code$ cat B.hs {-# LANGUAGE TemplateHaskell #-} module B where import A x = $(a) nicolas@nicolas-XPS-13-9370:/tmp/no-code$ nix-shell -p 'haskell.compiler.ghc802' --run 'ghc -fno-code B' [1 of 2] Compiling A ( A.hs, nothing ) [2 of 2] Compiling B ( B.hs, nothing ) ByteCodeLink.lookupCE During interactive linking, GHCi couldn't find the following symbol: A_a_closure This may be due to you not asking GHCi to load extra object files, archives or DLLs needed by your current session. Restart GHCi, specifying the missing library using the -L/path/to/object/dir and -lmissinglibname flags, or simply by naming the relevant files on the GHCi command line. Alternatively, this link failure might indicate a bug in GHCi. If you suspect the latter, please send a bug report to: glasgow-haskell-bugs@haskell.org nicolas@nicolas-XPS-13-9370:/tmp/no-code$ nix-shell -p 'haskell.compiler.ghc822' --run 'ghc -fno-code B' [1 of 2] Compiling A ( A.hs, nothing ) [2 of 2] Compiling B ( B.hs, nothing ) ghc: ^^ Could not load 'A_a_closure', dependency unresolved. See top entry above. ByteCodeLink.lookupCE During interactive linking, GHCi couldn't find the following symbol: A_a_closure This may be due to you not asking GHCi to load extra object files, archives or DLLs needed by your current session. Restart GHCi, specifying the missing library using the -L/path/to/object/dir and -lmissinglibname flags, or simply by naming the relevant files on the GHCi command line. Alternatively, this link failure might indicate a bug in GHCi. If you suspect the latter, please send a bug report to: glasgow-haskell-bugs@haskell.org nicolas@nicolas-XPS-13-9370:/tmp/no-code$ nix-shell -p 'haskell.compiler.ghc841' --run 'ghc -fno-code B' [1 of 2] Compiling A ( A.hs, /run/user/1001/ghc17566_0/ghc_2.o ) [2 of 2] Compiling B ( B.hs, /run/user/1001/ghc17566_0/ghc_4.o ) nicolas@nicolas-XPS-13-9370:/tmp/no-code$ echo $? 0 }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14931#comment:5 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler