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authorSimon Peyton Jones <simonpj@microsoft.com>2021-05-06 09:49:45 +0100
committerSimon Peyton Jones <simonpj@microsoft.com>2021-05-06 22:37:44 +0100
commit5e08a2c03b92634babb7dfc414d3f4439fc59cec (patch)
treef6d5b2a591658817eaf2e35a3d0b9e96180e4246 /libraries/ghc-prim/GHC/Classes.hs
parent30f6923a834ccaca30c3622a0a82421fabcab119 (diff)
downloadhaskell-wip/T19739.tar.gz
Fix newtype eta-reductionwip/T19739
The eta-reduction we do for newype axioms was generating an inhomogeneous axiom: see #19739. This patch fixes it in a simple way; see GHC.Tc.TyCl.Build Note [Newtype eta and homogeneous axioms]
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