#5129: "evaluate" optimized away -------------------------------------+------------------------------------- Reporter: dons | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: 8.4.2 Component: Compiler | Version: 7.0.3 Resolution: | Keywords: seq, evaluate Operating System: Unknown/Multiple | Architecture: Type of failure: Incorrect result | Unknown/Multiple at runtime | Test Case: Blocked By: | Blocking: Related Tickets: #13930 | Differential Rev(s): Phab:D615, Wiki Page: | Phab:D4514 -------------------------------------+------------------------------------- Comment (by Simon Peyton Jones <simonpj@…>): In [changeset:"abaf43d9d88d6fdf7345b936a571d17cfe1fa140/ghc" abaf43d/ghc]: {{{ #!CommitTicketReference repository="ghc" revision="abaf43d9d88d6fdf7345b936a571d17cfe1fa140" Fix seq# case of exprOkForSpeculation This subtle patch fixes Trac #5129 (again; comment:20 and following). I took the opportunity to document seq# properly; see Note [seq# magic] in PrelRules, and Note [seq# and expr_ok] in CoreUtils. }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/5129#comment:36> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler