base-4.7.0.0: Basic libraries

Copyright(c) The University of Glasgow 2011
Licensesee libraries/base/LICENSE
Maintainercvs-ghc@haskell.org
Stabilityinternal
Portabilitynon-portable (GHC Extensions)
Safe HaskellNone
LanguageHaskell2010

GHC.Stack

Contents

Description

Access to GHC's call-stack simulation

Since: 4.5.0.0

Synopsis

Call stack

currentCallStack :: IO [String]Source

returns a '[String]' representing the current call stack. This can be useful for debugging.

The implementation uses the call-stack simulation maintined 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.

Since: 4.5.0.0

whoCreated :: a -> IO [String]Source

Get the stack trace attached to an object.

Since: 4.5.0.0

errorWithStackTrace :: String -> aSource

Like the function error, but appends a stack trace to the error message if one is available.

Since: 4.7.0.0

Internals