#9903: GHCi produces a cryptic message when using HPC -------------------------------------+------------------------------------- Reporter: | Owner: facundo.dominguez | Status: new Type: bug | Milestone: Priority: normal | Version: 7.9 Component: GHCi | Keywords: hpc Resolution: | Architecture: Unknown/Multiple Operating System: | Difficulty: Unknown Unknown/Multiple | Blocked By: Type of failure: GHCi crash | Related Tickets: #9878, #9762 ? Test Case: | Blocking: | Differential Revisions: | -------------------------------------+------------------------------------- Description changed by facundo.dominguez: Old description:
The following test produces an impolite response from GHCi
{{{ $ cat t.hs g :: Int g = 1 + 1 $ ghc-stage2 --interactive t.hs -fhpc GHCi, version 7.9.20141217: http://www.haskell.org/ghc/ :? for help [1 of 1] Compiling Main ( t.hs, interpreted ) Ok, modules loaded: Main. *Main> g ghc-stage2: panic! (the 'impossible' happened) (GHC version 7.9.20141217 for x86_64-unknown-linux): Loading temp shared object failed: /tmp/ghc25774_0/ghc25774_5.so: undefined symbol: _hpc_tickboxes_Main_hpc
Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug }}} It has been noted elsewhere (#9878) that these kinds of messages are better avoided.
New description: The following test produces an impolite response from GHCi {{{ $ cat t.hs g :: Int g = 1 + 1 $ ghc-stage2 --interactive t.hs -fhpc GHCi, version 7.9.20141217: http://www.haskell.org/ghc/ :? for help [1 of 1] Compiling Main ( t.hs, interpreted ) Ok, modules loaded: Main. *Main> g ghc-stage2: panic! (the 'impossible' happened) (GHC version 7.9.20141217 for x86_64-unknown-linux): Loading temp shared object failed: /tmp/ghc25774_0/ghc25774_5.so: undefined symbol: _hpc_tickboxes_Main_hpc Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug }}} Discovered while investigating #9878. -- -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9903#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler