simonpj 2003/02/04 07:31:19 PST
Modified files:
ghc/compiler/coreSyn MkExternalCore.lhs
Log:
-------------------------------------
Fix a name-capture bug in Ext-Core
-------------------------------------
Don't expand newtypes (even non-recursive ones) when going to External Core.
Reason: the expansion was performed *after* Tidying; the expansion performs
type substitution, which is only done right if you take account of the Uniques.
But since it's post-tidying, we got capture of occurence names.
I hope the lack of newtype expansion doesn't hurt anyone; I doubt it will.
If so, we can think again.
Thanks to Tobias Gedell for this one.
Revision Changes Path
1.16 +24 -7 fptools/ghc/compiler/coreSyn/MkExternalCore.lhs
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