On 2014-12-01 at 05:08:12 +0100, Carter Schonwald wrote:
http://hackage.haskell.org/package/base-4.7.0.1/docs/GHC-Stack.html#v:errorW...
has been in GHC for for >=1 major version, and for normal builds, acts just like error, BUT, when an error is thrown in a profiled build, it appends a stack trace with some basic source location data to the end of the error message!
I'm only a bit worried this may cause problems for code which catch pure exceptions via `evaluate` and expect to recover the string passed to 'error' by deconstructing the 'ErrorCall'... -- |This is thrown when the user calls 'error'. The @String@ is the -- argument given to 'error'. newtype ErrorCall = ErrorCall String deriving (Eq, Ord, Typeable, Exception) at the very least you'd need to adapt the documentation of 'ErrorCall'