#15422: GHCi debugger doesn't see free variables when using ApplicativeDo -------------------------------------+------------------------------------- Reporter: simonmar | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: 8.6.1 Component: Compiler | Version: 8.4.3 Resolution: | Keywords: ApplicativeDo Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Phab:D4991 Wiki Page: | -------------------------------------+------------------------------------- Comment (by Krzysztof Gogolewski <krz.gogolewski@…>): In [changeset:"4ea9311cc5c3b99ea6915bee23f0a6776731f20e/ghc" 4ea9311/ghc]: {{{ #!CommitTicketReference repository="ghc" revision="4ea9311cc5c3b99ea6915bee23f0a6776731f20e" Fix the GHCi debugger with ApplicativeDo Summary: `collectLStmtsBinders` was returning nothing for `ApplicativeStmts`, which caused the debugger to not track free variables in many cases when using `ApplicativeDo`. Test Plan: * new test case * validate Reviewers: bgamari, erikd Reviewed By: bgamari Subscribers: rwbarton, thomie, carter GHC Trac Issues: #15422 Differential Revision: https://phabricator.haskell.org/D4991 }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15422#comment:2> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler