#13372: Attach CallStack to IOError, add CallStack constraints to relevant functions in base -------------------------------------+------------------------------------- Reporter: ezyang | Owner: (none) Type: feature request | Status: new Priority: normal | Milestone: Component: libraries/base | Version: 8.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by mnislaih): Both choices are viable, I think Java does (1), whereas C# goes with (2) but keeps a list of call stacks to avoid losing the original stack on rethrow. If we later wanted to add a call stack to SomeException, would (2) become the more natural choice ? If so, would it be worth adapting the proposal to add the call stack to SomeException now, but only surface it in IOError ? -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13372#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler