Re: [Haskell-cafe] Prelude.undefined

On Wed, Mar 3, 2010 at 6:11 AM, Tom Hawkins wrote:

On Wed, Mar 3, 2010 at 6:07 AM, Ivan Miljenovic wrote:

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On 3 March 2010 16:06, Tom Hawkins wrote:

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How do I track down an reference to an undefined value?  My program must not be using a library correctly because the program makes no direct use of 'undefined'.  Running with +RTS -xc yields:

Test: Prelude.undefined

Are you matching all patterns?  When compiling with -Wall does it make any complaints?

-Wall only complains about shadow bindings, defined but not used, and no type signature.  But no unmatched patterns.

BTW, I'm using: GHC 6.12.1 bytestring 0.9.1.5 containers 0.3.0.0