#4946: reify does not work on data structures defined in files without Language
pragma of Template Haskell and without -fth or -XTemplateHaskell command
line flags
-----------------------+----------------------------------------------------
Reporter: guest | Owner:
Type: bug | Status: new
Priority: normal | Component: GHCi
Version: 7.0.1 | Keywords:
Testcase: | Blockedby:
Os: Linux | Blocking:
Architecture: x86 | Failure: None/Unknown
-----------------------+----------------------------------------------------
reify does not work on data structures defined in files without Language
pragma of Template Haskell and without -fth or -XTemplateHaskell command
line flags
Main.hs: File with the splice expression
Fields.hs: File with the Template Haskell code that lists all the fields
in particular datastructures recursively.
DataStructure.hs: File with the datastructure being reified in TH.hs
When all the files have the TemplateHaskell Language pragma, everything
works
When the command line flag -fth or -XTemplateHaskell are used, everything
works
When the DataStructure.hs does not have the TemplateHaskell Language
pragma, then when the data-structure is being reified in TH.hs, it
generates blank lists for all the fields of TyConI (DataD ...
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4946>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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