[ruby-core:42460] [ruby-trunk - Feature #5992][Open] DL and fiddle should support intrinsic types, size_t, ptrdiff_t and intptr_t

Issue #5992 has been reported by Nobuyoshi Nakada.

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Feature #5992: DL and fiddle should support intrinsic types, size_t, ptrdiff_t and intptr_t
https://bugs.ruby-lang.org/issues/5992

Author: Nobuyoshi Nakada
Status: Open
Priority: Normal
Assignee: Aaron Patterson
Category: ext
Target version: 2.0.0

size_t and ptrdiff_t can be resulted by built-in operators, so they should be provided as well as other
primitive types.

Also ruby often needs uintptr_t as VALUE.

Patch attached.

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