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Simon Peyton Jones authored
This patch fixes a rather obscure bug, whereby it's possible for (case C a b of <alts>) to have altenatives that do not inclue (C a b)! See Note [Unreachable code] in CoreUtils.
9414bda0
This patch fixes a rather obscure bug, whereby it's possible for (case C a b of <alts>) to have altenatives that do not inclue (C a b)! See Note [Unreachable code] in CoreUtils.