On 23/09/2009 09:03, Simon Marlow wrote:
On 22/09/2009 17:37, Lennart Augustsson wrote:
I'll look into it at work tomorrow. The problem I had before was that
it worked in ghc, but not ghci.
If there's no bug report I'll file one.

I wouldn't say it was a bug - the function really doesn't exist, and the
library really does refer to it (AIUI). The reason that ghc behaves
differently from ghci is that you don't have to link all the symbols
from a .a library. The same problem will occur in ghc if the package is
compiled to a shared library or DLL.

It seems I'm wrong - the problem is really that erf() and friends come from the static libmingwex.a library, which doesn't have a DLL equivalent and therefore aren't available under GHCi. erf and co will have to join the long list of symbols in GHCi's linker that have the same unfortunate property.

This is of course not a sustainable process. If we ever do a truly native Windows port with no MinGW libraries then the problem with reoccur (but at least it will behave consistently across GHC and GHCi).

Cheers,
        Simon

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