id,summary,reporter,owner,description,type,status,priority,milestone,component,version,resolution,keywords,cc,os,architecture,failure,difficulty,testcase,blockedby,blocking,related
2238,panic nameModule tpl_B1{v},claus,igloo,"using the attached code, we get 
{{{
*Main> cfd True
""cfd""
*Main> ctf True

<interactive>:1:0:
    No instance for (CTF Bool how)
      arising from a use of `ctf' at <interactive>:1:0-7
    Possible fix: add an instance declaration for (CTF Bool how)
    In the expression: ctf True
    In the definition of `it': it = ctf True
}}}
but if we uncomment the `CTF` instance, we get panic, even for cfd..
{{{
*Main> cfd True
: panic! (the 'impossible' happened)
  (GHC version 6.9.20080217 for i386-unknown-mingw32):
        nameModule tpl_B1{v}

Please report this as a GHC bug:  http://www.haskell.org/ghc/reportabug

*Main> ctf True
: panic! (the 'impossible' happened)
  (GHC version 6.9.20080217 for i386-unknown-mingw32):
        nameModule tpl_B1{v}

Please report this as a GHC bug:  http://www.haskell.org/ghc/reportabug
}}}",merge,closed,normal,6.10 branch,Compiler,6.9,fixed,,,Unknown/Multiple,Unknown/Multiple,,Unknown,T2238,,,