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Simon Peyton Jones authored
When doing the fixpoint iteration for 'deriving' we have to be careful not to end up in a loop, even if we have -fallow-undecidable-instances. Test is tcfail169
a7ba22ff
When doing the fixpoint iteration for 'deriving' we have to be careful not to end up in a loop, even if we have -fallow-undecidable-instances. Test is tcfail169