-
Simon Peyton Jones authored
------------------ Fix an mdo bug ------------------ Embarassingly, this bug makes GHC either panic (for some programs) or go into a loop (on others) in a recursive mdo that involves a polymorphic function. Urk! The fix is twofold: a) add a missing bindInstsOfLocalFuns to tcStmtAndThen (RecStmt case) b) bind the correct set of variables in dsRecStmt I added some explanatory comments about RecStmt in HsExpr too. The tests is mdo/should_compile/mdo006
a27f7c87