id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	os	architecture	failure	difficulty	testcase	blockedby	blocking	related
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	guest		"reify does not work on data structures defined in files compiled without `TemplateHaskell`.

 * `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 ...`"	bug	closed	normal	7.4.1	GHCi	7.0.1	invalid		sivaramreddy@…	Linux	x86	None/Unknown