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May 2008
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2008.05.26 15:47 "Re: beta2 release - lfind() problem on Win64", by Edward Lam
Bob, Oh I absolute agree, it's awful on MS's part. > It seems that the only cure is to add Windows specific code to handle > this specific case. An alternative is to roll our own. Since it's only doing a linear search, rolling our own and taking out the use of the callback function would probably be faster anyhow. Also, adding an explicit linear search hardly adds any complexity. Cheers, -Edward Bob Friesenhahn wrote: > On Mon, 26 May 2008, Edward Lam wrote: >> >> In trying to compile libtiff 4.0 beta 2 on Win64 with MSVC 8, I've >> encountered the following warning which I think needs fixing: >> >> tif_dirinfo.c(508) : warning C4133: 'function' : incompatible types - >> from 'size_t *' to 'unsigned int *' >> >> The problem is that the call to lfind() on Win64 is redirected to >> _lfind() from search.h. For its 3rd argument, it hasn't been updated >> to size_t * (pointer to 64-bits) and still uses unsigned int * >> (pointer to 32-bits). I'm > > This is just awful. Why did Microsoft do that? > > The recent libtiff updates in this area were necessary so that libtiff > works properly in 64-bit applications. This is supposed to be the > prototype for lfind: > > void *lfind(const void *key, const void *base, size_t *nelp, > size_t width, int (*compar)(const void *, const void *)); > > It seems that the only cure is to add Windows specific code to handle > this specific case. > > Bob > ====================================== > Bob Friesenhahn > bfriesen@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/ > GraphicsMagick Maintainer, http://www.GraphicsMagick.org/ >