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patch: splay-tree.h type adjustment needed for x86_64-mingw support

Hello,

In splay-tree.h the type of splay_tree_key and splay_tree_value is not 
wide enough for x86_64-mingw target because the "long" type remains 32-bit 
on this platform, but the pointer is 64-bit wide. By the reason, that 
there are target where the "long"-type is bigger than a pointer, I suggest 
the following patch. Because AFAIK x86_64-mingw is currently the only 
target having this ABI, I used the target specific MACRO 
_INTEGRAL_MAX_BITS for detection.

ChangeLog:
2007-03-30  Kai Tietz  <kai.tietz@onevision.com>

        * include/splay-tree.h: (longptr_t): New type definition with wide 
enough for a long
          and a pointer.
          (splay_tree_key, splay_tree_value): Set base type to longptr_t.

Regards,
 i.A. Kai Tietz



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