#11158: Combine exprIsTrivial and cpe_ExprIsTrivial -------------------------------------+------------------------------------- Reporter: simonpj | Owner: Type: task | Status: infoneeded Priority: highest | Milestone: 8.2.1 Component: Compiler | Version: 7.10.2 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Phab:D1656 Wiki Page: | -------------------------------------+------------------------------------- Comment (by nomeata):
(Trying to set NoCafInfo on all the extra floats I am generating here, and rebuilding the libraries. Will report back.)
That did the trick. No more crashes. I conclude that having a data constructor closure mentioned in the SRT is bad. But it is not everz occurence that causes problems: With the libraries built so that all new floats have `NoCafInfo`, and then building my test program to include the floated `()` closure or `GHC.Base.Nothing_closure` in the SRT does *not* crash. So there must be further conditions required for such an entry in the SRT causing a crash. Maybe with this analysis Simon Marlow can without too much effort shed more light on the issue. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/11158#comment:19 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler