#16167: -ddump-json output empty with runghc -------------------------------------+------------------------------------- Reporter: shmish111 | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.4.3 Resolution: | Keywords: Operating System: MacOS X | Architecture: x86_64 Type of failure: Incorrect | (amd64) error/warning at compile-time | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by shmish111): Ok, I seem to have narrowed it down to the `-e ":set prog Main.hs"` flag ``` [nix-shell:~]$ ghc --version The Glorious Glasgow Haskell Compilation System, version 8.4.4 [nix-shell:~]$ ghc -x hs -e ":set prog Main.hs" -ddump-json Main2.hs Main2.hs:4:8: error: • Variable not in scope: undefinedx :: IO () • Perhaps you meant ‘undefined’ (imported from Prelude) | 4 | main = undefinedx | ^^^^^^^^^^ [] ``` ``` [nix-shell:~]$ ghc --version The Glorious Glasgow Haskell Compilation System, version 8.6.3 [nix-shell:~]$ ghc -x hs -e ":set prog Main.hs" -ddump-json Main2.hs Main2.hs:4:8: error: • Variable not in scope: undefinedx :: IO () • Perhaps you meant ‘undefined’ (imported from Prelude) | 4 | main = undefinedx | ^^^^^^^^^^ ``` -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/16167#comment:4 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler