The impossible happened with TH + -fno-omit-interface-pragmas
$ ./ghc-stage2 --interactive Test.hs
GHCi, version 7.7.20130919: http://www.haskell.org/ghc/ :? for help
Loading package ghc-prim ... linking ... done.
Loading package integer-gmp ... linking ... done.
Loading package base ... linking ... done.
[1 of 1] Compiling Main ( /home/errge/tmp/Test.hs, interpreted )
ghc-stage2: panic! (the 'impossible' happened)
(GHC version 7.7.20130919 for i386-unknown-linux):
toIfaceTickish
Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug
>
Leaving GHCi.With Test.hs being:
{-# LANGUAGE TemplateHaskell #-}
{-# OPTIONS_GHC -fno-omit-interface-pragmas #-}
main :: IO ()
main = return ()I want to make TemplateHaskell generated non-essential info visible even with -O0. Compilation works, everything is fine. But I can't load source code like this with GHCi, which is annoying.
Setting priority to high, since this is a crash.
Trac metadata
| Trac field | Value |
|---|---|
| Version | 7.7 |
| Type | Bug |
| TypeOfFailure | OtherFailure |
| Priority | high |
| Resolution | Unresolved |
| Component | Compiler |
| Test case | |
| Differential revisions | |
| BlockedBy | |
| Related | |
| Blocking | |
| CC | |
| Operating system | |
| Architecture |