#8796: -ddump-splices prints to error stream -------------------------------+------------------------------------------- Reporter: jstolarek | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.9 Resolution: | Keywords: Operating System: | Architecture: Unknown/Multiple Unknown/Multiple | Difficulty: Easy (less than 1 hour) Type of failure: | Blocked By: None/Unknown | Related Tickets: Test Case: | Blocking: | -------------------------------+------------------------------------------- Comment (by nomeata): Wasn’t there a ticket asking for more structured splice output, i.e. dumping it to a separate file, with precise origin information, basically everything needed to write a tool that reliably replaces the TH code by the splice... Currenlty I only find #5016, which is about getting the dump closer to valid Haskell (also see [http://stackoverflow.com/questions/12169093/can-i -rely-on-template-haskell-expansion-using-ddump-splices-to-always-genera this SE question]). At http://stackoverflow.com/a/15851260/946226 people are surprised that it is dumped to stderr, and not to a file. And there are two tools doing this splace-replacement-thingy already: https://joeyh.name/blog/entry/Template_Haskell_on_impossible_architectures/ and http://hackage.haskell.org/package/zeroth. So it seems that there is demand for improvement. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8796#comment:3 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler