include/ruby/win32.h, win32/win32.c (rb_w32_is_valid_fd): new function to validate fd.
* io.c (rb_io_initialize): check fd with above function.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@21734 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
include/ruby/win32.h, win32/win32.c (rb_w32_is_valid_fd): new function
to validate fd.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@21734 b2dd03c8-39d4-4d8f-98ff-823fe69b080e