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  • Glasgow Haskell Compiler
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  • #5379

Closed
Open
Opened Aug 04, 2011 by reinerp@trac-reinerp

Scoping error in Template Haskell antiquotations

Related to #5375 (closed), #5037 (closed). When compiling and running the following:

{-# LANGUAGE TemplateHaskell #-}

import Language.Haskell.TH

$( [d| g = 0
       h = $( return $ LamE [VarP (mkName "g")] (VarE 'g) ) |] )

main = print (h 1)

the splice should be

g' = 0
h = \g -> g'

and so the program should print 0 at runtime. Instead, it prints 1.

This is with both ghc-7.0.3 and ghc-7.3.20110803.

Trac metadata
Trac field Value
Version 7.0.4
Type Bug
TypeOfFailure OtherFailure
Priority normal
Resolution Unresolved
Component Compiler
Test case
Differential revisions
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Architecture
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Reference: ghc/ghc#5379