Interface lexer bug in 3.01

After some failed attempts of compiling GreenCard-generated sources with -O, I boilt down the problem to a bug in GHC's interface lexer. Here a failing program: -- Foo.hs module Foo where bar :: IO Int bar = _casm_ ``%r = 42;;'' -- Main.hs

Re: Interface lexer bug in 3.01

Sven Panne writes: After some failed attempts of compiling GreenCard-generated sources with -O, I boilt down the problem to a bug in GHC's interface lexer. Here a failing program: -- Foo.hs module Foo where bar :: IO Int bar = _casm_ ``%r =