On 13 September 2004 17:44, Frank-Andre Riess wrote:

this is my first post on this list. I'm quite new to using Haskell (started in July), so my question might be somewhat trivial, but I still hope you can help me out.

At the moment our project - a parser for a type language - consists of the following modules: Lexer IntermediateSyntax Parser (from a Happy source file) - uses Lexer and IntermediateSyntax Main - uses Parser

When compiling using ghc, I get the following error:

Parser.o(.text+0x10fc5): In function `r1fgN_entry':

...

undefined reference to `DataziTuple_Z77T_con_info'

collect2: ld returned 1 exit status

I neither know the function `r1fgN_entry' nor `DataziTuple_Z77T_con_info'. So what is it?

The compiler has generated intermediate code which uses a 77-tuple, but unfortunately the libraries don't contain code for 77-tuples (we only go up to 62-tuples). This is kind of a known bug, occasionally tickled by Happy-generated parsers. If you're not generating your parser with 'happy -agc', then that should help. Cheers, Simon