[ ghc-Bugs-1232660 ] Warning and glagow-exts instead of glasgow-exts

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Bugs item #1232660, was opened at 2005-07-05 10:26
Message generated for change (Settings changed) made by simonpj
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Category: Compiler
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Nobody/Anonymous (nobody)
>Assigned to: Simon Peyton Jones (simonpj)
Summary: Warning and glagow-exts instead of glasgow-exts

Initial Comment:
Take this module (Bla.hs): 

x = [ q | y <- [1..10] | z <- [30..40], let q = z*z]

Loading it into GHCi gives:

[ Bla.hs:1: Illegal parallel list comprehension: use -
fglagow-exts ]

PROBLEM: glagow-exts should be glasgow-exts

If we supply this option, one of the warnings is incorrect:

[ Bla.hs:1: Warning: Defined but not used: y, z ]

PROBLEM: z is used but marked as not used

Cheers, Arjan (afie at cs.uu.nl)



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