Re: [GHC] #10245: panic in new integer switch logic with "out-of-range" literals

#10245: panic in new integer switch logic with "out-of-range" literals -------------------------------------+------------------------------------- Reporter: rwbarton | Owner: (none) Type: bug | Status: new Priority: high | Milestone: Component: Compiler | Version: 7.11 (CodeGen) | Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: x86_64 Type of failure: Compile-time | (amd64) crash | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): -------------------------------------+------------------------------------- Comment (by Ben Gamari ): In [changeset:"6dfc5ebf70df8f0fdccc5004d914b777f21f3b72/ghc" 6dfc5eb/ghc]: {{{ #!CommitTicketReference repository="ghc" revision="6dfc5ebf70df8f0fdccc5004d914b777f21f3b72" Ensure that Literals are in range This commit fixes several bugs related to case expressions involving numeric literals which are not in the range of values of their (fixed-width, integral) type. There is a new invariant on Literal: The argument of a MachInt[64] or MachWord[64] must lie within the range of the corresponding primitive type Int[64]# or Word[64]#, as defined by the target machine. This invariant is enforced in mkMachInt[64]/mkMachWord[64] by wrapping the argument to the target type's range if necessary. Test Plan: Test Plan: make slowtest TEST="T9533 T9533b T9533c T10245 T10246" Trac issues: #9533, #10245, #10246, #13171 Reviewers: simonmar, simonpj, austin, bgamari, nomeata Reviewed By: bgamari Subscribers: thomie, rwbarton Differential Revision: https://phabricator.haskell.org/D810 }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10245#comment:13 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler