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1. callStack :: HasCallStack => CallStack

   base	GHC.Stack

   Return the current CallStack. Does *not* include the call-site of callStack.

2. currentCallStack :: IO [String]

   base	GHC.Stack

   Returns a [String] representing the current call stack. This can be useful for debugging. The implementation uses the call-stack simulation maintained by the profiler, so it only works if the program was compiled with -prof and contains suitable SCC annotations (e.g. by using -fprof-auto). Otherwise, the list returned is likely to be empty or uninformative.

3. emptyCallStack :: CallStack

   base	GHC.Stack

   The empty CallStack.

4. freezeCallStack :: CallStack -> CallStack

   base	GHC.Stack

   Freeze a call-stack, preventing any further call-sites from being appended.

   pushCallStack callSite (freezeCallStack callStack) = freezeCallStack callStack
   

5. fromCallSiteList :: [([Char], SrcLoc)] -> CallStack

   base	GHC.Stack

   Convert a list of call-sites to a CallStack.

6. getCallStack :: CallStack -> [([Char], SrcLoc)]

   base	GHC.Stack

   Extract a list of call-sites from the CallStack. The list is ordered by most recent call.

7. popCallStack :: CallStack -> CallStack

   base	GHC.Stack

   Pop the most recent call-site off the CallStack. This function, like pushCallStack, has no effect on a frozen CallStack.

8. prettyCallStack :: CallStack -> String

   base	GHC.Stack

   Pretty print a CallStack.

9. pushCallStack :: ([Char], SrcLoc) -> CallStack -> CallStack

   base	GHC.Stack

   Push a call-site onto the stack. This function has no effect on a frozen CallStack.

10. withFrozenCallStack :: HasCallStack => (HasCallStack => a) -> a

    base	GHC.Stack

    Perform some computation without adding new entries to the CallStack.

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