#10627: Regression: cabal install of numeric-prelude hangs -------------------------------------+------------------------------------- Reporter: George | Owner: Type: bug | Status: merge Priority: high | Milestone: 7.10.2 Component: Compiler | Version: 7.10.2-rc2 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Compile-time | Unknown/Multiple crash | Test Case: Blocked By: | simplCore/should_compile/T10627 Related Tickets: | Blocking: | Differential Revisions: -------------------------------------+------------------------------------- Comment (by simonpj): Replying to [comment:20 George]:
Do we understand why this worked as recently as June 1st?
No, I'm not sure.
Also, why would the compiler hang without this fix? Just curious.
It's the knot-tying in `CoreSubst.simplRecBndrs`. Did you read `Note [Substitute lazily]` referred to in the commit message? -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10627#comment:21 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler