delta/haskell.git - gitlab.haskell.org: ghc/ghc.git

	Commit message (Collapse)	Author	Age	Files	Lines
*	Deal with large extra-contraints wildcards	Simon Peyton Jones	2017-09-25	1	-0/+41
	For reasons explained in TcHsType Note [Extra-constraint holes in partial type signatures], if we had f :: (_) => blahs and the '_' was filled in by more than a 62-tuple of contraints, GHC crashed. The same Note explains the hacky solution I have adopted to evade this. Maybe there is some better way, but I couldn't see one that didn't involve a great deal of work. And the problem is a very narrow one! If the hack bites us we'll need to think again.