#7241: GHC-7.6.1 panics on template haskell code ---------------------------------------+----------------------------------- Reporter: akamaus | Owner: Yuras Type: bug | Status: new Priority: normal | Milestone: 7.8.3 Component: Template Haskell | Version: 7.6.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Compile-time crash | Unknown/Multiple Test Case: | Difficulty: Unknown Blocking: | Blocked By: | Related Tickets: ---------------------------------------+----------------------------------- Changes (by Yuras): * owner: simonpj => Yuras Comment: So, the comment added in changeset:d8d798b1b33ab0593ed03f193360b8725ba2c2ba is not fully correct. `findLocalDupsRdrEnv` doesn't catch this particular case because duplicate `Name`s are totally identical, including `SrcSpan`. I'll prepare a patch to emit error in case of duplicate GRE. The test case from #8932 will produce two errors, but I think it is ok. Definitely better then obscure panic. Please let me know if I'm going in wrong direction. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/7241#comment:6 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler