[Haskell-cafe] How to make Prelude.read: no parse more verbose ...
g_sauthoff at web.de
Wed Dec 19 11:53:18 EST 2007
I try to debug some existing Haskell-Code. Out of the blue I get a
'progname: Prelude.read: no parse'
error message from GHC.
Well, the code includes
# grep '\<read\>' *| wc -l
calls to the read fn.
Well, how do I compile a Haskell program in such a way, that I
get a useful error message from read? I mean, like the
filename/linenumber of the calling expression for starters.
Really crazy would be the possibility to print out a backtrace,
if some (library) function calls error ...
Fortune : 'Real programmers don't comment their code.
It was hard to write, it should be hard to understand.' ;)
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