#11606: name shadowing warnings don't trigger on standalone declarations in ghci -------------------------------------+------------------------------------- Reporter: rwbarton | Owner: (none) Type: bug | Status: new Priority: high | Milestone: 8.4.1 Component: GHCi | Version: 7.10.3 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: #16096 | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Changes (by osa1): * owner: rwbarton => (none) * related: => #16096 Comment: My fix for #16096 (Phab:D5473) which treats `x = y` as `let x = y` fixes this: {{{ ~ $ ghc-stage2 --interactive -Wall GHCi, version 8.7.20181226: https://www.haskell.org/ghc/ :? for help Loaded GHCi configuration from /home/omer/rcbackup/.ghci λ:1> x = 1 λ:2> x = 1 <interactive>:2:1: warning: [-Wname-shadowing] This binding for ‘x’ shadows the existing binding defined at <interactive>:1:1 λ:3> let x = 1 <interactive>:3:5: warning: [-Wname-shadowing] This binding for ‘x’ shadows the existing binding defined at <interactive>:2:1 λ:4> x <- return () <interactive>:4:1: warning: [-Wname-shadowing] This binding for ‘x’ shadows the existing binding defined at <interactive>:3:5 }}} If we merge it we should add a test and close this. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/11606#comment:10 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler