[Haskell-cafe] code-as-config, run-time checks and error locations

[Daniel Trstenjak]

Hi Steffen,

most of the time I'm just using these cpp macros:

#define __POS__    (__FILE__ ++ ":" ++ show __LINE__)
#define ERROR      error $ __POS__ ++ " -> " ++


Instead of writing 'error "blub"' you would write 'ERROR "blub"'
and additionally get the file name and the line.


There's a bracktracing functionality in the more recent versions of
ghc. I think it has been discussed on this mailing list.


Greetings,
Daniel