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Simon Peyton Jones authored
The hack is described in detail in Note [Meta-hack for coerce]. It's a consequence of this, perfectly legitimate, commit: commit 7a1480c7 Author: Simon Peyton Jones <simonpj@microsoft.com> Date: Tue Jan 22 22:43:22 2013 +0000 Allow eta-reduction of eval'd functions if of arity 1 See Note [Eta reduction of an eval'd function] in CoreUtils. This doesn't fix Trac #7542, but that was the ticket that pointed out this infelicity. compiler/coreSyn/CoreUtils.lhs | 24 ++++++++++++++++++++++--
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