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Simon Peyton Jones authored
The standard FFI says that newtypes are automatically unwrapped in argument and result types. This test checks that it also happens for newtype-wrapping of the IO monad itself, a recent change to GHC.
550a5224
The standard FFI says that newtypes are automatically unwrapped in argument and result types. This test checks that it also happens for newtype-wrapping of the IO monad itself, a recent change to GHC.