#7445: template-haskell : need a good error message instead of just an unexplained panic -------------------------------+-------------------------------------------- Reporter: erikd | Owner: Type: bug | Status: new Priority: normal | Component: Template Haskell Version: 7.7 | Keywords: Os: Unknown/Multiple | Architecture: Unknown/Multiple Failure: Compile-time crash | Blockedby: Blocking: | Related: -------------------------------+--------------------------------------------
Comment(by simonpj@…): commit 9a20e540754fc2af74c2e7392f2786a81d8d5f11 {{{ Author: Simon Peyton Jones <simo...@microsoft.com> Date: Thu Dec 6 16:03:16 2012 +0000 Stop attempting to "trim" data types in interface files Without -O, we previously tried to make interface files smaller by not including the data constructors of data types. But there are a lot of exceptions, notably when Template Haskell is involved or, more recently, DataKinds. However Trac #7445 shows that even without TemplateHaskell, using the Data class and invoking Language.Haskell.TH.Quote.dataToExpQ is enough to require us to expose the data constructors. So I've given up on this "optimisation" -- it's probably not important anyway. Now I'm simply not attempting to trim off the data constructors. The gain in simplicity is worth the modest cost in interface file growth, which is limited to the bits reqd to describe those data constructors. compiler/main/TidyPgm.lhs | 207 ++++++++++++++++++++++++--------------------- 1 files changed, 109 insertions(+), 98 deletions(-) }}} -- Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7445#comment:6> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler _______________________________________________ Glasgow-haskell-bugs mailing list Glasgow-haskell-bugs@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-bugs