#16091: arith011 broken with integer-simple -------------------------------------+------------------------------------- Reporter: bgamari | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: 8.8.1 Component: Compiler | Version: 8.6.3 Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: None/Unknown Unknown/Multiple | Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- The `arith011` test fails unexpected when using `integer-simple`. The test output is [[https://gitlab.haskell.org/ghc/ghc/-/jobs/4892/raw|quite long]] but here is the end: {{{ # negate 0 = 0 # testReal toRational 0 = 0 % 1 toRational 1 = 1 % 1 toRational 2 = 2 % 1 toRational 3 = 3 % 1 # testIntegral Stderr ( arith011 ): arith011: divide by zero *** unexpected failure for arith011(normal) }}} This is concerning since it suggests a behavioral difference between `integer-simple` and `integer-gmp`. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/16091 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler