#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 ezyang): I've mentioned on the other ticket that I don't think adding call stacks to the SomeException type is wise (since you lose the callstacks when you unwrap SomeException and work with `Exception e => e`). So, if the best you can do is add call stack manipulating functions to the Exception type class, (2) can be made to work, since the Exception generic functions can use the methods in the type class to attach a call stack. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13372#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler